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Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jun. 30, 2017	Jul. 31, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q2
Trading Symbol	HLIT
Entity Registrant Name	HARMONIC INC
Entity Central Index Key	0000851310
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		81,272,292

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 52,885	$ 55,635
Short-term investments	0	6,923
Accounts receivable, net	60,427	86,765
Inventories	35,130	41,193
Prepaid expenses and other current assets	24,318	26,319
Total current assets	172,760	216,835
Property and equipment, net	31,624	32,164
Goodwill	240,570	237,279
Intangibles, net	25,317	29,231
Other long-term assets	37,745	38,560
Total assets	508,016	554,069
Current liabilities:
Other debts and capital lease obligations, current	7,130	7,275
Accounts payable	31,322	28,892
Income taxes payable	1,349	1,166
Deferred revenue	55,165	52,414
Accrued and other current liabilities	50,272	55,150
Total current liabilities	145,238	144,897
Convertible notes, long-term	105,935	103,259
Other debts and capital lease obligations, long-term	9,292	13,915
Income taxes payable, long-term	2,996	2,926
Deferred tax liabilities, long-term	258	0
Other non-current liabilities	16,716	18,431
Total liabilities	280,435	283,428
Commitments and contingencies (Note 18)
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.001 par value, 150,000 shares authorized; 80,669 and 78,456 shares issued and outstanding at June 30, 2017 and December 31, 2016, respectively	81	78
Additional paid-in capital	2,260,886	2,254,055
Accumulated deficit	(2,030,384)	(1,976,222)
Accumulated other comprehensive loss	(3,002)	(7,270)
Total stockholders’ equity	227,581	270,641
Total liabilities and stockholders’ equity	$ 508,016	$ 554,069

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	80,669,000	78,456,000
Common stock, shares outstanding	80,669,000	78,456,000

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Income Statement [Abstract]
Product	$ 50,190	$ 77,413	$ 100,594	$ 135,057
Services	32,125	32,158	64,664	56,346
Total net revenue	82,315	109,571	165,258	191,403
Product	32,005	44,049	58,107	71,238
Services	16,495	14,482	32,928	28,471
Total cost of revenue	48,500	58,531	91,035	99,709
Total gross profit	33,815	51,040	74,223	91,694
Operating expenses:
Research and development	27,055	26,507	51,937	50,070
Selling, general and administrative	32,625	36,516	67,256	69,386
Amortization of intangibles	780	4,232	1,554	6,597
Restructuring and related charges	777	1,903	2,056	4,515
Total operating expenses	61,237	69,158	122,803	130,568
Loss from operations	(27,422)	(18,118)	(48,580)	(38,874)
Interest expense, net	(2,680)	(2,651)	(5,270)	(5,072)
Other (expense) income, net	(819)	332	(1,330)	323
Loss on impairment of long-term investment	0	0	0	(1,476)
Loss before income taxes	(30,921)	(20,437)	(55,180)	(45,099)
Provision for income taxes	579	242	347	760
Net loss	$ (31,500)	$ (20,679)	$ (55,527)	$ (45,859)
Net loss per share:
Basic and diluted	$ (0.39)	$ (0.27)	$ (0.69)	$ (0.59)
Shares used in per share calculation:
Basic and diluted	80,590	77,342	80,203	77,168

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Net loss	$ (31,500)	$ (20,679)	$ (55,527)	$ (45,859)
Other comprehensive income (loss) before tax:
Unrealized (loss) gain arising during the period	0	(165)	0	158
Loss reclassified into earnings	0	22	0	100
Change in unrealized gain (loss) on cash flow hedges:	0	(143)	0	258
Unrealized (loss) gain arising during the period	(114)	(49)	(613)	30
Loss reclassified into earnings	0	0	0	1,476
Change in unrealized gain (loss) on available-for-sale securities:	(114)	(49)	(613)	1,506
Change in foreign currency translation adjustments	3,994	(2,611)	4,883	(677)
Other comprehensive income (loss) before tax	3,880	(2,803)	4,270	1,087
Less: Provision for (benefit from) income taxes	0	5	2	23
Other comprehensive income (loss), net of tax	3,880	(2,808)	4,268	1,064
Total comprehensive loss	$ (27,620)	$ (23,487)	$ (51,259)	$ (44,795)

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016
Cash flows from operating activities:
Net loss	$ (55,527)	$ (45,859)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of intangibles	4,144	8,322
Depreciation	7,139	7,737
Stock-based compensation	7,387	5,862
Amortization of discount on convertible debt and issuance cost	2,676	2,417
Restructuring, asset impairment and loss on retirement of fixed assets	228	1,687
Amortization of non-cash warrant	416	0
Loss on impairment of long-term investment	0	1,476
Deferred income taxes, net	(38)	38
Provision for excess and obsolete inventories	5,094	5,203
Allowance for doubtful accounts and returns	3,274	697
Other non-cash adjustments, net	189	144
Changes in operating assets and liabilities, net of effects of acquisition:
Accounts receivable	23,479	(16,000)
Inventories	2,912	3,158
Prepaid expenses and other assets	5,933	(4,148)
Accounts payable	1,434	2,168
Deferred revenue	1,308	25,956
Income taxes payable	228	(122)
Accrued and other liabilities	(7,662)	(7,029)
Net cash provided by (used in) operating activities	2,614	(8,293)
Cash flows from investing activities:
Acquisition of business, net of cash acquired	0	(72,989)
Proceeds from maturities of investments	3,106	12,842
Purchases of property and equipment	3,792	0
Purchases of property and equipment	(5,943)	(7,708)
Net cash provided by (used in) investing activities	955	(67,855)
Cash flows from financing activities:
Payment of convertible debt issuance costs	0	(582)
Proceeds from other debts and capital leases	164	5,972
Repayment of other debts and capital leases	(6,650)	(6,524)
Proceeds from common stock issued to employees	2,117	3,737
Payment of tax withholding obligations related to net share settlements of restricted stock units	(2,726)	(1,034)
Net cash (used in) provided by financing activities	(7,095)	1,569
Effect of exchange rate changes on cash and cash equivalents	776	(95)
Net decrease in cash and cash equivalents	(2,750)	(74,674)
Cash and cash equivalents at beginning of period	55,635	126,190
Cash and cash equivalents at end of period	$ 52,885	$ 51,516

Basis of Presentation and Significant Accounting Policies	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation and Significant Accounting Policies	BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation The accompanying unaudited condensed consolidated financial statements, in the opinion of management, include all adjustments (consisting only of normal recurring adjustments) which Harmonic Inc. (“Harmonic,” or the “Company”) considers necessary for a fair statement of the results of operations for the interim periods covered and the consolidated financial condition of the Company at the date of the balance sheets. This Quarterly Report on Form 10-Q should be read in conjunction with the Company’s audited consolidated financial statements contained in the Company’s Annual Report on Form 10-K, which was filed with the Securities and Exchange Commission on March 3, 2017 (the “2016 Form 10-K”). The interim results presented herein are not necessarily indicative of the results of operations that may be expected for the full fiscal year ending December 31, 2017, or any other future period. The Company’s fiscal quarters are based on 13-week periods, except for the fourth quarter, which ends on December 31. The condensed consolidated financial statements include the accounts of the Company and its subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. The year-end condensed balance sheet was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America (“U.S. GAAP”). On February 29, 2016, the Company completed the acquisition of Thomson Video Networks (“TVN”). TVN is now a part of the Company’s Video segment and its results of operations are included in the Company’s Condensed Consolidated Statements of Operations beginning March 1, 2016. During the fourth quarter of 2016, the Company completed the accounting for this business combination. Use of Estimates The preparation of the condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. Significant Accounting Policies The Company’s significant accounting policies are described in Note 2 to its audited Consolidated Financial Statements included in the 2016 Form 10-K. There have been no significant changes to these policies during the six months ended June 30, 2017 other than those disclosed in Note 2, “Standards Implemented”.

Recent Accounting Pronouncements	6 Months Ended
Recent Accounting Pronouncements	Jun. 30, 2017
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS New standards to be implemented In May 2014, the Financial Accounting Standards Board (“FASB”) issued a new standard, Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers, as amended, which will supersede nearly all existing revenue recognition guidance. Under ASU 2014-09, an entity is required to recognize revenue upon transfer of promised goods or services to customers in an amount that reflects the expected consideration received in exchange for those goods or services. ASU No. 2014-09 defines a five-step process in order to achieve this core principle, which may require the use of judgment and estimates, and also requires expanded qualitative and quantitative disclosures relating to the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers, including significant judgments and estimates used. The FASB has issued several amendments to the new standard, including clarification on accounting for licenses of intellectual property and identifying performance obligations. The amendments include ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606)-Principal versus Agent Considerations, which was issued in March 2016, and clarifies the implementation guidance for principal versus agent considerations in ASU 2014-09, and ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606)-Identifying Performance Obligations and Licensing, which was issued in April 2016, and amends the guidance in ASU No. 2014-09 related to identifying performance obligations and accounting for licenses of intellectual property. The new standard permits adoption either by using (i) a full retrospective approach for all periods presented in the period of adoption or (ii) a modified retrospective approach with the cumulative effect of initially applying the new standard recognized at the date of initial application and providing certain additional disclosures. The new standard is effective for annual reporting periods beginning after December 15, 2017, with early adoption permitted for annual reporting periods beginning after December 15, 2016. The Company does not plan to early adopt, and accordingly, it will adopt the new standard effective January 1, 2018. The Company currently plans to adopt using the modified retrospective approach. However, a decision regarding the adoption method has not been finalized at this time. The Company’s final determination will depend on a number of factors, such as the significance of the impact of the new standard on its financial results, system readiness, including that of software procured from third-party providers, and its ability to accumulate and analyze the information necessary to assess the impact on prior period financial statements, as necessary. The Company is in the initial stages of its evaluation of the impact of the new standard on its accounting policies, processes, and system requirements. The Company has made and will continue to make investments in systems to enable timely and accurate reporting under the new standard. While the Company continues to assess all potential impacts under the new standard, there is the potential for significant impacts to the timing of recognition of software licenses with undelivered features and professional services revenue related to service contracts with acceptance terms as well as contract acquisition costs, both with respect to the amounts that will be capitalized as well as the period of amortization. Under current industry-specific software revenue recognition guidance, the Company has historically concluded that it did not have vendor-specific objective evidence (“VSOE”) of fair value of the undelivered features relating to delivered software licenses, and accordingly, it has deferred entire revenue for such software licenses until the delivery of features. Professional services included in arrangements with acceptances have also been recognized on receipt of acceptance. The new standard, which does not retain the concept of VSOE, requires an evaluation of whether the undelivered features are distinct performance obligations and, therefore, should be separately recognized when delivered compared to the timing of delivery of software license. Professional services will generally be recorded as services are provided. Depending on the outcome of the Company’s evaluation, the timing of when revenue is recognized could change for future features and professional services under the new standard. As part of the Company’s preliminary evaluation, it has also considered the impact of the guidance in ASC 340-40, Other Assets and Deferred Costs; Contracts with Customers, and the interpretations of the FASB Transition Resource Group for Revenue Recognition (“TRG”) from their November 7, 2016 meeting with respect to capitalization and amortization of incremental costs of obtaining a contract. As a result of this new guidance, the Company is currently assessing if it will need to capitalize any costs of obtaining the contract, including additional sales commissions. Under the Company’s current accounting policy, it expenses the commission costs immediately as incurred. While the Company continues to assess the potential impacts of the new standard, including the areas described above, the Company does not know or cannot reasonably estimate quantitative information related to the impact of the new standard on its financial statements at this time. In January 2016, the FASB issued an accounting standard update which requires equity investments to be measured at fair value with changes in fair value recognized in net income and simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. The accounting standard update also updates certain presentation and disclosure requirements. This accounting standard update will be effective for the Company beginning in the first quarter of fiscal 2018 and early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements. In February 2016, the FASB amended the existing accounting standard for lease accounting. Under this guidance, lessees and lessors should apply a “right-of-use” model in accounting for all leases (including subleases) and eliminate the concept of operating leases and off-balance sheet leases. This new leases standard requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. The new standard will be effective for the Company beginning in the first quarter of fiscal 2019 and early adoption is permitted. The Company is currently evaluating the methods and impact of adopting this new leases standard on its consolidated financial statements. In June 2016, the FASB issued new guidance that changes the impairment model for most financial assets and certain other instruments. For trade receivables and other instruments, the Company will be required to use a new forward-looking “expected loss” model. Additionally, credit losses on available-for-sale debt securities should be recorded through an allowance for credit losses limited to the amount by which fair value is below amortized cost. The new guidance will be effective for the Company beginning in the first quarter of fiscal 2019 and early adoption is permitted. The Company is currently evaluating the impact of adopting this new accounting guidance on its consolidated financial statements. In August 2016, the FASB issued an accounting standard update that addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. This accounting standard update will be effective for the Company beginning in the first quarter of fiscal 2018 and early adoption is permitted. The Company is currently evaluating the methods and impact of adopting the new accounting standard on its consolidated financial statements. In November 2016, the FASB issued an accounting standard update which requires companies to include restricted cash and restricted cash equivalents in its cash and cash equivalent balances in the statement of cash flows. Transfers between cash, cash equivalents, restricted cash, and restricted cash equivalents are no longer presented in the statement of cash flows. The new guidance requires a reconciliation of the totals in the statement of cash flows to the related captions. This accounting standard update will be effective for the Company beginning in the first quarter of fiscal 2018 and early adoption is permitted. The adoption of this new guidance is not expected to have a material impact on the Company’s consolidated financial statements. In January 2017, the FASB issued an accounting standard update to simplify the test for goodwill impairment. It removes Step 2 of the goodwill impairment test and requires the assessment of fair value of individual assets and liabilities of a reporting unit to measure goodwill impairments. Goodwill impairment will now be the amount by which a reporting unit's carrying value exceeds its fair value. The accounting standard update will be effective for the Company beginning in the first quarter of fiscal 2020 on a prospective basis, and early adoption is permitted. The Company is currently evaluating the impact of adopting this new accounting guidance on its consolidated financial statements. In March 2017, the FASB issued a new accounting standard to improve the presentation of net periodic pension cost and net periodic post-retirement benefit cost. This new standard will be effective for the Company beginning in the first quarter of fiscal 2018 and early adoption is permitted. The Company is currently evaluating the impact of adopting this new accounting guidance on its consolidated financial statements. In May 2017, the FASB issued a new accounting standard to clarify when to account for a change to the terms or conditions for a share-based payment award as a modification. It requires modification accounting only if the fair value, the vesting condition or the classification of the award changes as a result of the change in terms or conditions. This new standard will be effective for the Company beginning in the first quarter of fiscal 2018 and early adoption is permitted. The Company is currently evaluating the impact of adopting this new accounting guidance on its consolidated financial statements. Standards Implemented In February 2015, the FASB issued an accounting standard update that changes the analysis that a reporting entity must perform to determine whether it should consolidate certain types of legal entities. The accounting standard update became effective for the Company beginning in the first quarter of fiscal 2017. The application of this accounting standard update did not have any impact on the Company's Consolidated Balance Sheet or Statement of Operations upon adoption. In July 2015, the FASB issued an accounting standard update that requires inventory to be measured at the lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. The Company adopted this accounting standard update beginning in the first quarter of fiscal 2017 and the adoption did not have a material impact on its consolidated financial statements. In March 2016, the FASB issued an accounting standard update to clarify the requirements for assessing whether contingent call (put) options that can accelerate the payment of principal on debt instruments are clearly and closely related to their debt hosts. An entity performing the assessment under the amendments is required to assess the embedded call (put) options solely in accordance with the four-step decision sequence. The Company adopted this accounting standard update beginning in the first quarter of fiscal 2017 and the adoption did not have any impact on its consolidated financial statements. In March 2016, the FASB issued an accounting standard update for the accounting of share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. The new standard eliminated the requirement to report excess tax benefits and certain tax deficiencies related to share-based payment transactions as additional paid-in capital. It also removes the requirement to delay recognition of a windfall tax benefit until it reduces current taxes payable. Under the new guidance, the benefit will be recorded when it arises, subject to normal valuation allowance considerations. The Company adopted this new accounting standard beginning in the first quarter of fiscal 2017 using a modified-retrospective transition method and recorded a cumulative effect of $4.6 million of additional gross deferred tax asset associated with shared-based payment and an offsetting valuation allowance of the same amount, therefore resulting in no net impact to the Company’s beginning retained earnings. Prior to January 1, 2017, stock-based compensation expense was recorded net of estimated forfeitures in the Company’s condensed consolidated statements of operations and, accordingly, was recorded for only those stock-based awards that the Company expected to vest. Upon the adoption of this accounting standard update, effective January 1, 2017, the Company changed its accounting policy to account for forfeitures as they occur. The change was applied on a modified retrospective approach with a cumulative effect adjustment of $69,000 to retained earnings as of January 1, 2017 (which increased the accumulated deficit). The implementation of this accounting standard update has no impact to the Company’s condensed statement of cash flows because the Company does not have any excess tax benefits from share-based compensation because its tax provision is primarily under full valuation allowance. No prior periods were recast as a result of this change in accounting policy. In October 2016, the FASB issued an accounting standard update which requires companies to recognize the income tax consequences of all intra-entity sales of assets other than inventory when they occur. As a result, a reporting entity would recognize the tax expense from the sale of the asset in the seller’s tax jurisdiction when the transfer occurs, even though the pre-tax effects of that transaction are eliminated in consolidation. Any deferred tax asset that arises in the buyer’s jurisdiction would also be recognized at the time of the transfer. The Company early adopted this accounting standard update during the first quarter of fiscal 2017 on a modified retrospective approach and recorded a cumulative-effect adjustment of $1.4 million to the retained earnings as of January 1, 2017 (which reduced the accumulated deficit). Correspondingly, in the first quarter of fiscal 2017, the Company recognized an additional $1.1 million of net deferred tax assets, after netting with $2.1 million of valuation allowance, and write off the remaining $0.3 million of unamortized tax expenses deferred under the previous guidance to provision for income taxes in the first quarter of fiscal 2017. In January 2017, the FASB issued an accounting standard update to clarify the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The definition of a business affects many areas of accounting including acquisitions, disposals, goodwill and consolidation. The guidance will be effective for the Company beginning in the first quarter of fiscal 2018 on a prospective basis, and early adoption is permitted. The adoption of this new guidance is not expected to have a material impact on the Company’s consolidated financial statements.

Business Acquisition

6 Months Ended

Jun. 30, 2017

Business Acquisition, Pro Forma Information [Abstract]

Business Acquisition

BUSINESS ACQUISITION

On February 29, 2016, the Company, through its wholly-owned subsidiary Harmonic International AG, completed its acquisition of 100% of the share capital and voting rights of TVN, a global leader in advanced video compression solutions headquartered in Rennes, France, for a final purchase price of $82.5 million in cash. The Company believes that its acquisition of TVN has strengthened, and will continue to strengthen, the Company’s competitive position in the video infrastructure market as well as to enhance the depth and scale of the Company’s research and development and service and support capabilities in the video arena.

During the fourth quarter of 2016, the Company completed the accounting for this business combination. The final TVN purchase price has been allocated to tangible and intangible assets acquired and liabilities assumed on the basis of their respective estimated fair values on the acquisition date. The Company’s allocation of TVN purchase consideration is as follows (in thousands):



Assets:
Cash and cash equivalents	$	6,843
Accounts receivable, net	14,933
Inventories	3,462
Prepaid expenses and other current assets	2,412
Property and equipment, net	9,942
French R&D tax credit receivables ⁽¹⁾	26,421
Other long-term assets	2,134
Total assets	$	66,147
Liabilities:
Other debts and capital lease obligations, current	8,362
Accounts payable	12,494
Deferred revenue	2,504
Accrued and other current liabilities	18,365
Other debts and capital lease obligations, long-term	16,087
Other non-current liabilities	6,467
Deferred tax liabilities	2,126
Total liabilities	$	66,405

Goodwill	41,670
Intangibles	41,100
Total purchase consideration	$	82,512

(1) See Note 8, “Balance Sheet Components-Prepaid expenses and other current assets” for more information on French R&D tax credit receivables.

The following table presents details of the intangible assets acquired through this business combination (in thousands, except years):



	Estimated Useful Life (in years)	Fair Value
Backlog	6 months	$	3,600
Developed technology	4 years	21,700
Customer relationships	5 years	15,200
Trade name	4 years	600
		$	41,100

The goodwill is not expected to be deductible for income tax purposes but the intangibles assets acquired are expected to be deductible for income tax purposes in certain jurisdictions. Both goodwill and intangibles assets acquired are assigned to the Company’s video reporting unit.

Acquisition- and integration-related expenses

As a result of the TVN acquisition, the Company incurred acquisition-and integration-related expenses and the amounts are summarized in the table below (in thousands):



	Acquisition-related				Integration-related
	Three months ended		Six months ended		Three months ended				Six months ended
	July 1, 2016				June 30, 2017		July 1, 2016		June 30, 2017		July 1, 2016
Product cost of revenue	$	—	$	—	$	—	$	433	$	342	$	491
Research and development	—		—		—		500		7		550
Selling, general and administrative	885		3,321		467		1,585		2,268		2,137
Total acquisition- and integration-related expenses	$	885	$	3,321	$	467	$	2,518	$	2,617	$	3,178

These costs consisted of acquisition-related costs which include outside legal, accounting and other professional services as well as integration-related costs which include incremental costs resulting from the TVN acquisition that are not expected to generate future benefits once the integration is fully consummated. These costs are expensed as incurred. The Company expects to continue to have some TVN integration-related costs throughout the remainder of 2017, primarily outside legal and advisory fees relating to re-organization of TVN’s legal entities.

Pro Forma Financial Information

The following unaudited pro forma summary presents consolidated information of the Company as if the acquisition of TVN had occurred on January 1, 2015, the beginning of the comparable prior annual period. The unaudited pro forma combined results are provided for illustrative purpose only and are not indicative of the Company’s actual consolidation results.

The pro forma adjustments primarily relate to the amortization of acquired intangibles and interest expense related to financing arrangements. In addition, the unaudited pro forma net loss for the three and six months ended July 1, 2016 was adjusted to exclude $6.5 million of acquisition- and integration- related expenses, respectively. These adjustments exclude the income tax impact.



	Six months ended
	July 1, 2016
(in millions, except per share amounts)
Net revenue	$	200.1
Net loss	(40.3		)
Net loss per share-basic and diluted	$	(0.52	)

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1497-128463

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1490-128463

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1486-128463

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
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+ Details

Short-Term Investments

6 Months Ended

Jun. 30, 2017

Cash and Cash Equivalents [Abstract]

Short-Term Investments

SHORT-TERM INVESTMENTS

As of June 30, 2017, the Company has no short-term investments. The following table summarizes the Company’s short-term investments as of December 31, 2016 (in thousands):



	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
As of December 31, 2016
Corporate bonds	$	6,928	$	—	$	(5	)	$	6,923
Total short-term investments	$	6,928	$	—	$	(5	)	$	6,923

The Company’s short-term investments as of December 31, 2016 had maturities of less than one year. These available-for-sale investments are presented as “Current Assets” in the Condensed Consolidated Balance Sheets as they were available for current operations. Realized gains and losses from the sale of investments were not material for the three and six months ended June 30, 2017 and July 1, 2016.

The Company’s investments in equity securities of other privately and publicly held companies were $3.8 million and $4.4 million as of June 30, 2017 and December 31, 2016, respectively, and such investments were considered as long-term investments and were included in “Other long-term assets” in the Condensed Consolidated Balance Sheet. (See Note 5, “Investments in Other Equity Securities” for additional information).

Investments in Other Equity Securities	6 Months Ended
Investments in Other Equity Securities	Jun. 30, 2017
Investments, All Other Investments [Abstract]
Investments in Equity Securities	INVESTMENTS IN OTHER EQUITY SECURITIES From time to time, the Company may acquire certain equity investments for the promotion of business objectives and these investments are classified as long-term investments and included in “Other long-term assets” in the Condensed Consolidated Balance Sheet. In 2014, the Company acquired a 3.3% interest in Vislink plc (“Vislink”), a U.K. public company listed on the AIM exchange in London, for $3.3 million. The investment in Vislink is being accounted for as a cost method investment as the Company does not have significant influence over the operational and financial policies of Vislink. Since the Vislink investment is also an available-for-sale security, its value is marked to market for the difference in fair value at period end. The carrying value of Vislink was $0.2 million and $0.8 million at June 30, 2017 and December 31, 2016, respectively. Vislink’s accumulated unrealized (loss) gain, net of taxes was $(0.3) million and $0.3 million at June 30, 2017 and December 31, 2016, respectively. Beginning in late 2015 and continuing through 2016, Vislink’s stock price was below the Company’s cost basis for a prolonged period of time and based on the Company’s assessment, impairment charges of $1.5 million and $1.2 million for Vislink were recorded in the first and third quarter of 2016, respectively, reflecting the new reduced cost basis of the Vislink investment at September 30, 2016. As of December 31, 2016, Vislink’s stock price increased approximately 67% from the stock price as of September 30, 2016. On February 3, 2017, Vislink (from thereon, referred to as Pebble Beach Systems) completed their disposal of its hardware division and changed its name to Pebble Beach Systems. On February 6, 2017, Pebble Beach Systems announced its financial results for fiscal 2016 which showed a significant increase in operating losses. As of June 30, 2017, Pebble Beach Systems’ stock price had declined 83% from the stock price as of December 31, 2016 and Pebble Beach System is currently seeking alternatives to maximize value for its shareholders, which could include a sale of the company. In view of Pebble Beach Systems’ potential sale opportunity, the Company determined that the decline in the fair value of Pebble Beach Systems’ investment is not considered permanent yet, and as a result, the $0.1 million loss in Vislink’s investment in the second quarter of 2017 was recorded to other comprehensive loss. The Company’s remaining maximum exposure to loss from the Pebble Beach Systems’ investment at June 30, 2017 was approximately $0.5 million, consisting of the carrying value of $0.2 million and the accumulated unrealized loss of $(0.3) million. The assessment as to the nature of a decline in fair value is based on, among other things, the length of time and the extent to which the market value has been less than the Company’s cost basis; the financial condition and near-term prospects of the investment; and the Company’s intent and ability to retain the investment for a period of time sufficient to allow for any anticipated recovery in market value. Unconsolidated Variable Interest Entities (“VIE”) In 2014, the Company acquired an 18.4% interest in Encoding.com, Inc. (“EDC”), a video transcoding service company headquartered in San Francisco, California, for $3.5 million by purchasing EDC’s Series B preferred stock. EDC is considered a variable interest entity but the Company determined that it is not the primary beneficiary of EDC. As a result, EDC is accounted for as a cost method investment. The Company determined that there were no indicators existing at June 30, 2017 that would indicate that the EDC investment was impaired. The Company’s maximum exposure to loss from the EDC’s investment at June 30, 2017 was limited to its investment cost of $3.6 million, including $0.1 million of transaction costs.

Derivative and Hedgiing Activities Derivative and Hedging Activities

6 Months Ended

Jun. 30, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Activities Disclosure

DERIVATIVES AND HEDGING ACTIVITIES

The Company uses forward contracts to manage exposures to foreign currency exchange rates. The Company’s primary objective in holding derivative instruments is to reduce the volatility of earnings and cash flows associated with fluctuations in foreign currency exchange rates and the Company does not use derivative instruments for trading purposes. The use of derivative instruments expose the Company to credit risk to the extent that the counterparties may be unable to meet their contractual obligations, as such, the potential risk of loss with any one counterparty is closely monitored by the Company.

Derivatives Not Designated as Hedging Instruments (Balance Sheet Hedges)

The Company’s balance sheet hedges consist of foreign currency forward contracts, mature generally within three months, are carried at fair value and are used to minimize the short-term impact of foreign currency exchange rate fluctuation on cash and certain trade and inter-company receivables and payables. Changes in the fair value of these foreign currency forward contracts are recognized in “Other expense, net” in the Condensed Consolidated Statement of Operations and are largely offset by the changes in the fair value of the assets or liabilities being hedged.

The locations and amounts of designated and non-designated derivative instruments’ gains and losses reported in the Company’s Accumulated Other Comprehensive Loss (“AOCI”) and Condensed Consolidated Statements of Operations were as follows (in thousands):



		Three months ended						Six months ended
	Financial Statement Location	June 30, 2017			July 1, 2016			June 30, 2017			July 1, 2016
Derivatives designated as hedging instruments:
Loss in AOCI on derivatives (effective portion)	AOCI	$	—		$	(165	)	$	—		$	158
Loss reclassified from AOCI into income (effective portion)	Cost of Revenue	$	—		$	(3	)	$	—		$	(13	)
	Operating Expense	—			(19		)	—			(87		)
	Total	$	—		$	(22	)	$	—		$	(100	)
Losses recognized in income on derivatives (ineffectiveness portion and amount excluded from effectiveness testing)	Other expense, net	$	—		$	(22	)	$	—		$	(49	)
Derivatives not designated as hedging instruments:
Loss recognized in income	Other expense, net	$	(53	)	$	(50	)	$	(185	)	$	(334	)

The U.S. dollar equivalents of all outstanding notional amounts of foreign currency forward contracts are summarized as follows (in thousands):



	June 30, 2017		December 31, 2016
Derivatives not designated as hedging instruments:
Purchase	$	9,911	$	4,056
Sell	$	5,970	$	11,157

The locations and fair value amounts of the Company’s derivative instruments reported in its Condensed Consolidated Balance Sheets are as follows (in thousands):



		Asset Derivatives					Derivative Liabilities
	Balance Sheet Location	June 30, 2017		December 31, 2016		Balance Sheet Location	June 30, 2017		December 31, 2016
Derivatives not designated as hedging instruments:
Foreign currency contracts	Prepaid expenses and other current assets	$	118	$	54	Accrued Liabilities	$	64	$	40
Total derivatives		$	118	$	54		$	64	$	40

Offsetting of Derivative Assets and Liabilities

The Company recognizes all derivative instruments on a gross basis in the Condensed Consolidated Balance Sheets. However, the arrangements with its counterparties allows for net settlement, which are designed to reduce credit risk by permitting net settlement with the same counterparty. As of June 30, 2017, information related to the offsetting arrangements was as follows (in thousands):



						Gross Amounts of Derivatives Not Offset in the Condensed Consolidated Balance Sheets
	Gross Amounts of Derivatives		Gross Amounts of Derivatives Offset in the Condensed Consolidated Balance Sheets	Net Amounts of Derivatives Presented in the Condensed Consolidated Balance Sheets		Financial Instrument			Cash Collateral Pledged	Net Amount
Derivative Assets	$	118	—	$	118	$	(11	)	—	$	107
Derivative Liabilities	$	64	—	$	64	$	(11	)	—	$	53

In connection with foreign currency derivatives entered in Israel, the Company’s subsidiaries in Israel are required to maintain a compensating balance with their bank at the end of each month. The compensating balance arrangements do not legally restrict the use of cash and as of June 30, 2017, the total compensating balance maintained was $2.5 million.

- Definition

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Subparagraph (SX 210.4-08.(n))
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+ Details

Fair Value Measurements

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Fair Value Measurements

FAIR VALUE MEASUREMENTS

The applicable accounting guidance establishes a framework for measuring fair value and requires disclosure about the fair value measurements of assets and liabilities. This guidance requires the Company to classify and disclose assets and liabilities measured at fair value on a recurring basis, as well as fair value measurements of assets and liabilities measured on a nonrecurring basis in periods subsequent to initial measurement, in a three-tier fair value hierarchy as described below.

The guidance defines fair value as the exchange price that would be received for an asset or paid to transfer a liability, in the principal or most advantageous market for the asset or liability, in an orderly transaction between market participants on the measurement date.

Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The guidance describes three levels of inputs that may be used to measure fair value:


•	Level 1 — Observable inputs that reflect quoted prices for identical assets or liabilities in active markets.

•

Level 2 — Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. The Company primarily uses broker quotes for valuation of its short-term investments. The forward exchange contracts are classified as Level 2 because they are valued using quoted market prices and other observable data for similar instruments in an active market.


•	Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

The carrying value of the Company’s financial instruments, including cash equivalents, restricted cash, accounts receivable, accounts payable and accrued and other current liabilities, approximate fair value due to their short maturities.

The Company uses the market approach to measure fair value for its financial assets and liabilities. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities. The fair value of the Company’s convertible notes is influenced by interest rates, the Company’s stock price and stock market volatility. The estimated fair value of the Company’s convertible notes based on a market approach was approximately $147.9 million and $143.5 million as of June 30, 2017 and December 31, 2016, respectively, and represents a Level 2 valuation. The Company’s other debts and capital leases assumed from the TVN acquisition are classified within Level 2 because these borrowings are not actively traded and the majority of them have a variable interest rate structure based upon market rates currently available to the Company for debt with similar terms and maturities. Additionally, the Company considers the carrying amount of its capital lease obligations to approximate their fair value because the weighted average interest rate used to formulate the carrying amounts approximates current market rates. The other debts and capital leases outstanding as of June 30, 2017 were $16.4 million in the aggregate. (See Note 11, “Convertible Notes, Other debts and Capital Leases” for additional information).

The fair value of the Company’s liability for the TVN voluntary departure plan (“TVN VDP”) as of June 30, 2017 of $7.2 million is classified within Level 3 because discount rates which are unobservable in the market were being used to measure the fair value of this liability. (See Note 10, “Restructuring and related Charges-TVN VDP” for additional information). The fair value of the TVN defined pension benefit plan liability of $4.8 million as of June 30, 2017 is disclosed in Note 12, “Employee Benefit Plans and Stock-based Compensation-TVN Retirement Benefit Plan.”

During the six months ended June 30, 2017, there were no nonrecurring fair value measurements of assets and liabilities subsequent to initial recognition.

The following table sets forth the fair value of the Company’s financial assets and liabilities measured at fair value on a recurring basis based on the three-tier fair value hierarchy (in thousands):



	Level 1		Level 2		Level 3		Total
As of June 30, 2017
Cash equivalents
Money market funds	$	246	$	—	$	—	$	246
Prepaids and other current assets
Derivative assets	—		118		—		118
Other assets
Long-term investment	192		—		—		192
Total assets measured and recorded at fair value	$	438	$	118	$	—	$	556
Accrued and other current liabilities
Derivative liabilities	$	—	$	64	$	—	$	64
Accrued TVN VDP, current portion	—		—		3,915		3,915
Other non-current liabilities
Accrued TVN VDP, long-term portion	—		—		3,247		3,247
Total liabilities measured and recorded at fair value	$	—	$	64	$	7,162	$	7,226
	Level 1		Level 2		Level 3		Total
As of December 31, 2016
Cash equivalents
Money market funds	$	8,301	$	—	$	—	$	8,301
Corporate bonds	—		6,923		—		6,923
Prepaids and other current assets
Derivative assets	—		54		—		54
Other assets
Long-term investment	809		—		—		809
Total assets measured and recorded at fair value	$	9,110	$	6,977	$	—	$	16,087
Accrued and other current liabilities
Derivative liabilities	$	—	$	40	$	—	$	40
Accrued TVN VDP, current portion	—		—		6,597		6,597
Other non-current liabilities
Accrued TVN VDP, long-term portion	—		—		3,053		3,053
Total liabilities measured and recorded at fair value	$	—	$	40	$	9,650	$	9,690

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Balance Sheet Components

6 Months Ended

Jun. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Balance Sheet Components

BALANCE SHEET COMPONENTS

The following tables provide details of selected balance sheet components (in thousands):



	June 30, 2017			December 31, 2016
Accounts receivable, net:
Accounts receivable	$	66,892		$	91,596
Less: allowances for doubtful accounts, returns and discounts	(6,465		)	(4,831		)
Total	$	60,427		$	86,765



	June 30, 2017		December 31, 2016
Prepaid expenses and other current assets:
Deferred cost of revenue	$	5,615	$	6,856
French R&D tax credits receivable⁽¹⁾	6,277		5,895
Prepaid maintenance, royalty, rent, property taxes and value added tax	6,574		5,526
Prepaid customer incentive⁽²⁾	746		1,162
Restricted cash⁽³⁾	802		731
Other	4,304		6,149
Total	$	24,318	$	26,319

(1) The Company’s acquired TVN subsidiary in France (the “TVN French Subsidiary”) participates in the French Crédit d’Impôt Recherche (“CIR”) program (the “R&D tax credits”) which allows companies to monetize eligible research expenses. The R&D tax credits can be used to offset against income tax payable to the French government in each of the four years after being incurred, or if not utilized, are recoverable in cash. The amount of R&D tax credits recoverable are subject to audit by the French government. The R&D tax credit receivables at June 30, 2017 were approximately $24.3 million and are expected to be recoverable from 2018 through 2021 with $6.3 million reported under “Prepaid and other Current Assets” and $18.0 million reported under “Other Long-term Assets” on the Company’s Condensed Consolidated Balance Sheets.

(2) On September 26, 2016, the Company issued a warrant to purchase shares of its common stock (the “Warrant”) to Comcast pursuant to which Comcast may, subject to certain vesting provisions, purchase up to 7,816,162 shares of the Company’s common stock subject to adjustment in accordance with the terms of the Warrant, for a per share exercise price of $4.76. The portion of the Warrant which vested on September 26, 2016 had a value of approximately $1.6 million and is deemed a customer incentive paid upfront and cumulatively, $0.9 million of this prepaid incentive has been recorded as a reduction to the Company’s net revenues from Comcast. The remaining $0.7 million of this prepaid incentive is reported as an asset under “Prepaid expenses and other current assets” on the Company’s Condensed Consolidated Balance Sheet as of June 30, 2017. The Company considers this asset to be recoverable based on the expectation of Comcast’s future purchases of the pertinent products.

(3) The restricted cash balances are held as cash collateral security for certain bank guarantees. These restricted funds are invested in bank deposits and cannot be withdrawn from the Company’s accounts without the prior written consent of the applicable secured party. Additionally, as of June 30, 2017, the Company recorded approximately $1.1 million of restricted cash for the bank guarantee associated with the TVN French Subsidiary’s office building lease. This amount is reported under “Other Long-term Assets” on the Company’s Condensed Consolidated Balance Sheets.



	June 30, 2017		December 31, 2016
Inventories:
Raw materials	$	9,179	$	9,889
Work-in-process	1,789		2,318
Finished goods	11,643		17,776
Service-related spares	12,519		11,210
Total	$	35,130	$	41,193



	June 30, 2017			December 31, 2016
Property and equipment, net:
Machinery and equipment	$	86,841		$	97,989
Capitalized software	32,639			34,519
Leasehold improvements	14,406			14,455
Furniture and fixtures	6,780			8,993
Property and equipment, gross	140,666			155,956
Less: accumulated depreciation and amortization	(109,042		)	(123,792		)
Total	$	31,624		$	32,164



	June 30, 2017		December 31, 2016
Accrued Liabilities:
Accrued employee compensation and related expenses	$	17,671	$	19,377
Accrued TVN VDP, current ⁽¹⁾	3,915		6,597
Accrued warranty	4,142		4,862
Customer deposits	3,848		4,537
Contingent inventory reserves	3,671		2,210
Accrued royalty payments	2,797		1,912
Others	14,228		15,655
Total	$	50,272	$	55,150

(1) See Note 10, “Restructuring and related charges-TVN VDP,” for additional information on the Company’s TVN VDP liabilities.

Goodwill and Identified Intangible Assets

6 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Identified Intangible Assets

GOODWILL AND IDENTIFIED INTANGIBLE ASSETS

Goodwill

Goodwill represents the difference between the purchase price and the estimated fair value of the identifiable assets acquired and liabilities assumed. Goodwill is allocated among and evaluated for impairment at the reporting unit level, which is defined as an operating segment or one level below an operating segment. The Company has two reporting units, Video and Cable Edge. The Company tests for goodwill impairment at the reporting unit level on an annual basis, or more frequently, if events or changes in circumstances indicate that the asset is more likely than not impaired. The Company’s annual goodwill impairment test is performed in the fiscal fourth quarter, with a testing date at the end of October.

During 2016, the Company recorded goodwill of $41.7 million for the TVN acquisition. Goodwill from the TVN acquisition is assigned to the Video reporting unit.

The changes in the carrying amount of goodwill by reportable segments for the six months ended June 30, 2017 were as follows (in thousands):



	Video		Cable Edge		Total
Balance as of December 31, 2016	$	176,519	$	60,760	$	237,279
Foreign currency translation adjustment	3,261		30		3,291
Balance as of June 30, 2017	$	179,780	$	60,790	$	240,570

Application of the goodwill impairment test requires judgment, including the identification of reporting units, assigning assets and liabilities to reporting units, assigning goodwill to reporting units, and determining the fair value of each reporting unit. Significant judgments required to estimate the fair value of reporting units include estimating future cash flows and determining appropriate discount rates, growth rates, an appropriate control premium and other assumptions. Changes in these estimates and assumptions could materially affect the determination of fair value for each reporting unit which could trigger impairment. If the Company’s assumptions and related estimates change in the future, or if the Company’s reporting structure changes or other events and circumstances change (e.g. such as a sustained decrease in the Company’s stock price), the Company may be required to record impairment charges in future periods. Any impairment charges that the Company may take in the future could be material to its results of operations and financial condition.

The Company performed its annual goodwill impairment review at October 31, 2016. Based on the impairment test performed, management concluded that goodwill was not impaired as the Video and Cable Edge reporting units had estimated fair values in excess of their carrying value by approximately 67% and 123%, respectively.

The Company has not recorded any impairment charges related to goodwill for any prior periods.

Intangible Assets

The following is a summary of intangible assets (in thousands):



		June 30, 2017							December 31, 2016
	Weighted Average Remaining Life (Years)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Developed core technology	2.7	$	31,708	$	(17,807	)	$	13,901	$	31,707	$	(15,216	)	$	16,491
Customer relationships/contracts	3.7	44,643		(33,641		)	11,002		44,384		(32,098		)	12,286
Trademarks and trade names	2.7	621		(207		)	414		573		(119		)	454
Maintenance agreements and related relationships	N/A	5,500		(5,500		)	—		5,500		(5,500		)	—
Order Backlog	N/A	3,011		(3,011		)	—		3,011		(3,011		)	—
Total identifiable intangibles		$	85,483	$	(60,166	)	$	25,317	$	85,175	$	(55,944	)	$	29,231

Amortization expense for the identifiable purchased intangible assets for the three and six months ended June 30, 2017 and July 1, 2016 was allocated as follows (in thousands):



	Three months ended				Six months ended
	June 30, 2017		July 1, 2016		June 30, 2017		July 1, 2016
Included in cost of revenue	$	1,295	$	1,307	$	2,590	$	1,725
Included in operating expenses	780		4,232		1,554		6,597
Total amortization expense	$	2,075	$	5,539	$	4,144	$	8,322

The estimated future amortization expense of purchased intangible assets with definite lives is as follows (in thousands):



	Cost of Revenue		Operating Expenses		Total
Year ended December 31,
2017 (remaining six months)	$	2,590	$	1,578	$	4,168
2018	5,180		3,156		8,336
2019	5,180		3,156		8,336
2020	951		3,026		3,977
2021	—		500		500
Total future amortization expense	$	13,901	$	11,416	$	25,317

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Restructuring and Related Charges

6 Months Ended

Jun. 30, 2017

Restructuring and Related Activities [Abstract]

Restructuring and Related Charges

RESTRUCTURING AND RELATED CHARGES

The Company implemented several restructuring plans in the past few years. The goal of these plans was to bring operational expenses to appropriate levels relative to its net revenues, while simultaneously implementing extensive company-wide expense control programs.

The Company accounts for its restructuring plans under the authoritative guidance for exit or disposal activities. The restructuring and related charges are included in “Product cost of revenue” and “Operating expenses-restructuring and related charges” in the Condensed Consolidated Statements of Operations. The following table summarizes the restructuring and related charges (in thousands):



	Three months ended				Six months ended
	June 30, 2017		July 1, 2016		June 30, 2017		July 1, 2016
Restructuring and related charges in:
Product cost of revenue	$	278	$	6	$	786	$	(23	)
Operating expenses-Restructuring and related charges	777		1,903		2,056		4,515
Total restructuring and related charges	$	1,055	$	1,909	$	2,842	$	4,492

Harmonic 2016 Restructuring

In the first quarter of 2016, the Company implemented a new restructuring plan (the “Harmonic 2016 Restructuring Plan”) to streamline the corporate organization, thereby reducing operating costs by consolidating duplicative resources in connection with the acquisition of TVN. The planned activities have primarily resulted, and will primarily result, in cash expenditures related to severance and related benefits and exiting certain operating facilities and disposing of excess assets. In the second quarter of 2016, the Company also initiated the TVN VDP in France to streamline the organization of the TVN French Subsidiary.

In 2016, the Company recorded an aggregate of $20.0 million of restructuring and related charges under the Harmonic 2016 Restructuring Plan, of which $2.2 million was primarily related to the Company exiting from an excess facility at its U.S. headquarters and the remaining $17.8 million was related to severance and benefits for the termination of 118 employees worldwide, including 83 employees in France who participated in the TVN VDP. (See details of TVN VDP described below). Additionally, the restructuring and related charges under the Harmonic 2016 Restructuring Plan in 2016 were partially offset by approximately $2.0 million of gain from TVN pension curtailment. For the employees who participated in the TVN VDP, their pension benefit is funded by the TVN VDP and, as a result, the TVN defined benefit pension plan was remeasured at December 31, 2016, which resulted in a non-cash curtailment gain. This gain was recorded as an offset to restructuring and related costs in 2016.

The Company also incurred $16.9 million of TVN acquisition- and integration-related expenses in 2016 and another $2.6 million in the six months ended June 30, 2017. The Company expects to continue to have some TVN integration-related costs throughout the remainder of 2017, primarily consisting of outside legal and advisory fees relating to the re-organization of TVN’s legal entities. (See Note 3, “Business Acquisition,” for additional information on TVN acquisition-and integration-related expenses).

In the three months ended June 30, 2017, the Company recorded $1.1 million of restructuring and related charges under the Harmonic 2016 Restructuring Plan, consisting of $0.7 million of TVN VDP charges and $0.4 million of severance for other employees. In the six months ended June 30, 2017, the Company recorded $2.8 million of restructuring and related charges under the Harmonic 2016 Restructuring Plan, consisting of $1.8 million of TVN VDP charges and $1.0 million of severance for other employees. During the six months ended June 30, 2017, 21 non-VDP employees worldwide were terminated.

TVN VDP

During 2016, the Company consulted and worked with the works council for the TVN French Subsidiary and applicable union representatives to establish a voluntary departure plan to enable French employees of TVN to voluntarily terminate with certain benefits. A total of 83 employees applied for the TVN VDP and were duly approved by the Company in the fourth quarter of 2016. The total TVN VDP costs, including severance, certain benefits and taxes, as well as administration costs, is estimated at approximately $15.3 million, in aggregate, at the inception of the plan and will be paid over a period of four years, based on the TVN VDP terms agreed with each employee. The total final payout to the employees may be different from the initial estimates depending on the final social charges imputed on each employee’s total income and benefits received. The Company does not expect the final payout to be materially different from the initial estimates. The fair value of the total TVN VDP liability at inception was estimated to be approximately $14.8 million.

The Company accounts for these special termination benefits in accordance with ASC 712, “Compensation - Nonretirement Postemployment Benefits,” which requires that the special termination benefits be recognized as a liability and a loss beginning when an employee accepts the offer of voluntary termination and the amount can be reasonably estimated. Where an employee is required to work beyond a minimum statutory notice period, the cost of the special termination benefit is recognized as an expense over the employee’s remaining service period. Where the employee is not required to work beyond a minimum statutory notice period, the cost of the special termination benefit is recognized upon the date the employee accepts the offer of voluntary termination, provided that the amount of the benefit can be estimated. Out of the 83 employees who applied for TVN VDP, 11 of them are required to work beyond the minimum statutory notice period into 2017. Based on the application of the accounting guidance, the Company recorded $1.8 million and $13.1 million of TVN VDP costs in the first six months of 2017 and in the year ended 2016, respectively. Cumulatively, the Company had paid an aggregate of $8.4 million of TVN VDP costs, of which $3.5 million was paid in 2016 and $4.9 million was paid in 2017. The fair value of the TVN VDP liability balance at June 30, 2017 was $7.2 million.

The table below shows the estimated future payments for TVN VDP as of June 30, 2017 (in thousands):



Years ending December 31,
2017 (remaining six months)	$	2,349
2018	3,302
2019	1,651
2020	783
Total	$	8,085

Excess Facility in San Jose, California

In January 2016, the Company exited an excess facility at its U.S. headquarters in San Jose, California and recorded $1.4 million in facility exit costs. The fair value of these liabilities is based on a net present value model using a credit-adjusted risk-free rate. The liability will be paid out over the remainder of the leased properties’ terms, which continue through August 2020. As of the cease-use date, the fair value of this restructuring liability totaled $2.5 million. Offsetting these charges was an adjustment for deferred rent liability relating to this space of $1.1 million. In December 2016, as a result of a change in estimated sublease income, the restructuring liability was increased by $0.6 million.

The following table summarizes the activity in the Company’s restructuring accrual related to the Harmonic 2016 Restructuring Plan during the six months ended June 30, 2017 (in thousands):



	Excess facilities			VDP ⁽¹⁾			Severance and benefits ⁽²⁾			Total
Balance at December 31, 2016	$	2,375		$	9,650		$	1,519		$	13,544
Charges for 2016 Harmonic Restructuring Plan	48			1,777			973			2,798
Adjustments to restructuring provisions							44			44
Cash payments	(676		)	(4,862		)	(2,067		)	(7,605		)
Foreign exchange gain				597			31			628
Balance at June 30, 2017	1,747			7,162			500			9,409
Less: current portion ⁽³⁾	(854		)	(3,915		)	(500		)	(5,269		)
Long-term portion ⁽³⁾	$	893		$	3,247		$	—		$	4,140

(1) See discussion of the TVN VDP above for future estimated payments through 2020.

(2) The Company anticipates that the remaining severance and benefits accrual at June 30, 2017 will be fully paid in 2017.

(3) The current portion and long-term portion of the restructuring liability are reported under “Accrued and other current liabilities” and “Other non-current liabilities”, respectively, on the Company’s Condensed Consolidated Balance Sheets.

Convertible Notes, Other Debts And Capital Leases

6 Months Ended

Jun. 30, 2017

Debt Disclosure [Abstract]

Convertible Notes, Other Debts And Capital Leases

CONVERTIBLE NOTES, OTHER DEBTS AND CAPITAL LEASES

4.00% Convertible Senior Notes

In December 2015, the Company issued $128.25 million aggregate principal amount of 4.0% unsecured convertible senior notes due December 1, 2020 (the “offering” or “Notes”, as applicable) through a private placement with a financial institution. The Notes do not contain any financial covenants and the Company can settle the Notes in cash, shares of common stock, or any combination thereof. The Notes can be converted under certain circumstances described below, based on an initial conversion rate of 173.9978 shares of common stock per $1,000 principal amount of Notes (which represents an initial conversion price of approximately $5.75 per share). Interest on the Notes is payable semiannually in arrears on June 1 and December 1 of each year.

Concurrent with the closing of the offering, the Company used $49.9 million of the net proceeds to repurchase 11.1 million shares of the Company’s common stock from purchasers of the offering in privately negotiated transactions. In addition, the Company incurred approximately $4.1 million in debt issuance costs resulting in net proceeds to the Company of approximately $74.2 million, which was used to fund the TVN acquisition.

Prior to September 1, 2020, holders of the Notes may convert the Notes at their option only under the following circumstances: (1) during any fiscal quarter commencing after the fiscal quarter ending on April 1, 2016, if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately preceding fiscal quarter is greater than or equal to 130% of the conversion price of the Notes on each applicable trading day; (2) during the five business day period after any five consecutive trading day period (the “ measurement period ”) in which the trading price per $1,000 principal amount of Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate on each such trading day; or (3) upon the occurrence of specified corporate events. Commencing on September 1, 2020 until the close of business on the second scheduled trading day immediately preceding the maturity date, the Notes will be convertible in multiples of $1,000 principal amount regardless of the foregoing circumstances.

If a fundamental change occurs, holders of the Notes may require the Company to purchase all or any portion of their Notes for cash at a repurchase price equal to 100% of the principal amount of the Notes to be repurchased, plus any accrued and unpaid interest to, but excluding, the fundamental change repurchase date. In addition, if specific corporate events occur prior to the maturity date, the conversion rate may be increased for a holder who elects to convert the Notes in connection with such a corporate event.

In accounting for the issuance of the Notes, the Company separated the Notes into liability and equity components. The carrying amount of the liability component was calculated by measuring the fair value of a similar liability that does not have an associated convertible feature. The carrying amount of the equity component representing the conversion option was determined by deducting the fair value of the liability component from the initial proceeds of the Notes as a whole. The difference between the initial proceeds of the Notes and the liability component (the “debt discount”) of $26.9 million is amortized to interest expense using the effective interest method over the term of the Notes. The equity component of the Notes is included in additional paid-in capital in the Condensed Consolidated Balance Sheets and is not remeasured as long as it continues to meet the conditions for equity classification.

In accounting for the transaction costs related to the issuance of the Notes, the Company allocated the total amount of $4.1 million to the liability and equity components using the same proportions as the proceeds from the Notes. Transaction costs attributable to the liability component were $3.2 million and were recorded as a direct deduction from the carrying amount of the debt liability in long-term liability in the Condensed Consolidated Balance Sheets and are being amortized to interest expense in the Condensed Consolidated Statements of Operations using the effective interest method over the term of the Notes. Transaction costs attributable to the equity component were $0.9 million and were netted with the equity component of the Notes in additional paid-in capital in the Condensed Consolidated Balance Sheets.

The following table presents the components of the Notes as of June 30, 2017 and December 31, 2016 (in thousands, except for years and percentages):



	June 30, 2017			December 31, 2016
Liability:
Principal amount	$	128,250		$	128,250
Less: Debt discount, net of amortization	(19,914		)	(22,302		)
Less: Debt issuance costs, net of amortization	(2,401		)	(2,689		)
Carrying amount	$	105,935		$	103,259
Remaining amortization period (years)	3.4			3.9
Effective interest rate on liability component	9.94		%	9.94		%

Equity:
Value of conversion option	$	26,925		$	26,925
Less: Equity issuance costs	(863		)	(863		)
Carrying amount	$	26,062		$	26,062

The following table presents interest expense recognized for the Notes (in thousands):



	Three months ended				Six months ended
	June 30, 2017		July 1, 2016		June 30, 2017		July 1, 2016
Contractual interest expense	$	1,282	$	1,282	$	2,565	$	2,565
Amortization of debt discount	1,214		1,098		2,388		2,157
Amortization of debt issuance costs	146		132		288		260
Total interest expense recognized	$	2,642	$	2,512	$	5,241	$	4,982

Other Debts and Capital Leases

In connection with the TVN acquisition, the Company assumed a variety of debt and credit facilities in France to satisfy the financing requirements of TVN operations. These arrangements are summarized in the table below (in thousands):



	June 30, 2017			December 31, 2016
Financing from French government agencies related to various government incentive programs ⁽¹⁾	$	13,597		$	17,930
Term loans ⁽²⁾	1,369			1,400
Obligations under capital leases	1,456			1,860
Total debt obligations	16,422			21,190
Less: current portion	(7,130		)	(7,275		)
Long-term portion	$	9,292		$	13,915

(1) As of June 30, 2017, the Company’s TVN French Subsidiary had an aggregate of $13.6 million of loans due to various financing programs of French government agencies, $10.8 million of which are related to loans backed by R&D tax credit receivables. As of June 30, 2017, the TVN French Subsidiary had an aggregate of $24.3 million of R&D tax credit receivables from the French government from 2018 through 2021. (See Note 8, “Balance Sheet Components-Prepaid expenses and other current assets,” for more information). These tax loans have a fixed rate of 0.6%, plus EURIBOR 1 month + 1.3% and mature between 2018 through 2019. The remaining loans of $2.8 million at June 30, 2017 primarily relate to financial support from French government agencies for R&D innovation projects at minimal interest rates and these loans mature between 2020 through 2023.

(2) One of the term loans with a certain financial institution contains annual covenants that require the TVN French Subsidiary to maintain a minimum working capital balance and various other financial covenants and restrictions that limit the French Subsidiary’s ability to incur additional indebtedness. The annual covenant is based on French statutory year-end results and the TVN French Subsidiary failed the 2016 covenant test primarily due to the Company’s plan to integrate TVN’s operations into other subsidiaries for tax planning and logistics purposes. In early 2017, the Company informed the financial institution of the 2016 covenant test results and was told by the financial institution to continue with the original payment schedule. The Company reported the entire loan balance with this financial institution under “Other debts and capital lease obligations, current” in the Condensed Consolidated Balance Sheets. The loan balance was approximately $0.4 million at both June 30, 2017 and December 31, 2016.

(3) The TVN French Subsidiary obtained advances under a credit line with BPI France against a pool of eligible receivables with recourse. There was no balance outstanding to BPI France as of June 30, 2017. This credit line expired in July 2017.

Future minimum repayments

The table below shows the future minimum repayments of debts and capital lease obligations for TVN as of June 30, 2017 (in thousands):



Years ending December 31,	Capital lease obligations		Other Debt obligations
2017 (remaining six months)	$	492	$	673
2018	868		5,873
2019	69		6,782
2020	27		601
2021	—		489
Thereafter	—		548
Total	$	1,456	$	14,966

Employee Benefit Plans and Stock-based Compensation

6 Months Ended

Jun. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Employee Benefit Plans and Stock-based compensation

EMPLOYEE BENEFIT PLANS AND STOCK-BASED COMPENSATION

Equity Award Plans

The Company’s stock benefit plans include the employee stock purchase plan and current active stock plans adopted in 1995 and 2002 as well as one stock plan in connection with an acquisition in 2010. See Note 13, “Employee Benefit Plans and Stock-based Compensation” of Notes to Consolidated Financial Statements in the 2016 Form 10-K for details pertaining to each plan.

The Company’s stockholders approved an amendment to the 1995 Stock Plan at the Company’s 2017 annual meeting of stockholders (the “2017 Annual Meeting”) which increased the number of shares of common stock reserved for issuance under the 1995 Stock Plan by 7,000,000 shares. The Company’s stockholders also approved an amendment to the 2002 Director Stock Plan at the 2017 Annual Meeting which increased the number of shares of common stock reserved for issuance under the 2002 Director Stock Plan by 400,000 shares.

The following table summarizes the Company’s stock option, restricted stock units (“RSUs”), performance-based stock awards (“PRSUs”) and market-based awards activities during the six months ended June 30, 2017 (in thousands, except per share amounts):



			Stock Options Outstanding				RSUs Outstanding*
	Shares Available for Grant		Number of Shares		Weighted Average Exercise Price		Number of Units		Weighted Average Grant Date Fair Value
Balance at December 31, 2016	3,912		5,019		$	6.01	3,864		$	4.26
Authorized	7,400		—		—		—		—
Granted	(4,008	)	30		5.10		2,651		5.46
Options exercised	—		(94	)	3.06		—
Shares released	—		—		—		(1,883	)	3.92
Forfeited	1,584		(469	)	6.13		(744	)	4.96
Balance at June 30, 2017	8,888		4,486		$	6.06	3,888		$	5.11

* The preceding table includes PRSUs and market-based award activities during the six months ended June 30, 2017.

Performance-based awards (PRSUs)

In August 2016, the Company granted 898,533 shares of PRSUs to fund a portion of its 2016 incentive bonus payment obligations to its key executives and other eligible employees. From March 2017 through April 2017, the Company granted another 582,806 PRSUs to fund its first half 2017 incentive bonus payment obligations. The vesting of the PRSUs is based on the achievement of certain financial and non-financial operating goals of the Company and vesting occurs within three to six months from the grant date. Each quarterly period, the Company estimates the probability of the achievement of these performance goals and recognizes any related stock-based compensation expense. If the achievement of such performance goals is not probable, no compensation expense is recognized.

Market-based awards

In the six months ended June 30, 2017, the Company granted 344,500 RSUs to its key executives and certain eligible employees that may vest during a three-year period as part of its long-term incentive program. The vesting conditions of these awards are tied to the market value of the Company's common stock. The fair value of these shares was estimated using a Monte-Carlo simulation.

The following table summarizes information about stock options outstanding as of June 30, 2017 (in thousands, except per share amounts and terms):



	Number of Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Vested and expected to vest	4,389	$	6.08	3.2	$	2,045
Exercisable	3,497	6.33		2.7	1,079

The intrinsic value of options vested and expected to vest and exercisable as of June 30, 2017 is calculated based on the difference between the exercise price and the fair value of the Company’s common stock as of June 30, 2017. The intrinsic value of options exercised is calculated based on the difference between the exercise price and the fair value of the Company’s common stock as of the exercise date. The intrinsic value of options exercised during the three and six months ended June 30, 2017 was $24,000 and $0.2 million, respectively. The intrinsic value of options exercised during the three months and six months ended July 1, 2016 was minimal.

The following table summarizes information about RSUs and PRSUs outstanding as of June 30, 2017 (in thousands, except term):



	Number of Shares Underlying Restricted Stock Units	Weighted Average Remaining Vesting Period (Years)	Aggregate Fair Value
Vested and expected to vest	2,893	0.9	$	15,190

The fair value of RSUs and PRSUs vested and expected to vest as of June 30, 2017 is calculated based on the fair value of the Company’s common stock as of June 30, 2017.

Employee Stock Purchase Plan (“ESPP”)

The Company’s stockholders approved an amendment to the 2002 Employee Stock Purchase Plan (the “ESPP”) at the 2017 Annual Meeting which increased the number of shares of common stock reserved for issuance under the ESPP by 1,500,000 shares. As of June 30, 2017, the number of shares of common stock available for issuance under the ESPP was 1,693,295. In the event that there are insufficient shares in the plan to fully fund the issuance, the available shares will be allocated across all participants based on their contributions relative to the total contributions received for the offering period.

Retirement Benefit Plan

As part of the TVN acquisition the Company assumed obligations under a defined benefit pension plan. The plan is unfunded and there are no contributions to the plan required by any laws or funding regulations, discretionary contributions or non-cash contributions expected to be made. The table below shows the components of net periodic benefit costs (in thousands):



	Three months ended				Six months ended
	June 30, 2017		July 1, 2016		June 30, 2017		July 1, 2016
Service cost	$	55	$	71	$	110	$	94
Interest cost	16		29		32		39
Recognized net actuarial loss	2		—		3		—
Net periodic benefit cost included in operating loss	$	73	$	100	$	145	$	133

The present value of the Company’s pension obligation as of June 30, 2017 was $4.8 million, of which $45,000 was reported under “Accrued and other liabilities” and $4.7 million was reported under “Other non-current liabilities” on the Company’s Condensed Consolidated Balance Sheets. The present value of the Company’s pension obligation as of December 31, 2016 was $4.3 million.

401(k) Plan

The Company has a retirement/savings plan for its U.S. employees, which qualifies as a thrift plan under Section 401(k) of the Internal Revenue Code. This plan allows participants to contribute up to the applicable Internal Revenue Code limitations under the plan. The Company has made discretionary contributions to the plan of 25% of the first 4% contributed by eligible participants, up to a maximum contribution per participant of $1,000 per year. The contributions for the six months ended June 30, 2017 and July 1, 2016 were $285,000 and $241,000, respectively.

Stock-based Compensation

The following table summarizes stock-based compensation expense for all plans (in thousands):



	Three months ended				Six months ended
	June 30, 2017		July 1, 2016		June 30, 2017		July 1, 2016
Stock-based compensation in:
Cost of revenue	$	700	$	424	$	1,145	$	651
Research and development expense	1,337		841		2,314		1,810
Selling, general and administrative expense	2,099		1,503		3,928		3,401
Total stock-based compensation in operating expense	3,436		2,344		6,242		5,211
Total stock-based compensation	$	4,136	$	2,768	$	7,387	$	5,862

As of June 30, 2017, the Company had approximately $16.5 million of unrecognized stock-based compensation expense related to unvested stock options and awards that are expected to be recognized over a weighted-average period of approximately 1.6 years.

Valuation Assumptions

The Company estimates the fair value of employee stock options and stock purchase rights under the ESPP using a Black-Scholes option valuation model. The value of the stock purchase rights under the ESPP consists of: (1) the 15% discount on the purchase of the stock; (2) 85% of the fair value of the call option; and (3) 15% of the fair value of the put option. The call option and put option were valued using the Black-Scholes option pricing model. At the date of grant, the Company estimated the fair value of each stock option grant and stock purchase right granted under the ESPP using the following weighted average assumptions:



	Employee Stock Options
	Three months ended				Six months ended
	June 30, 2017		July 1, 2016		June 30, 2017		July 1, 2016
Expected term (years)	4.30		4.30		4.30		4.30
Volatility	43	%	36	%	43	%	36	%
Risk-free interest rate	1.7	%	1.1	%	1.7	%	1.4	%
Expected dividends	0.0	%	0.0	%	0.0	%	0.0	%



	ESPP Purchase Period Ending
	July 3, 2017		June 30, 2016
Expected term (years)	0.49		0.5
Volatility	41	%	54	%
Risk-free interest rate	1.0	%	0.4	%
Expected dividends	0.0	%	0.0	%
Estimated weighted average fair value per share at purchase date	$1.40		$1.19

The expected term of the employee stock options represents the weighted-average period that the stock options are expected to remain outstanding. The computation of the expected term was determined based on historical experience of similar awards, giving consideration to the contractual terms of the stock-based awards, vesting schedules and expectations of future employee behavior. The expected term of the stock purchase rights under the ESPP represents the period of time from the beginning of the offering period to the purchase date. The Company uses its historical volatility for a period equivalent to the expected term of the options to estimate the expected volatility. The risk-free interest rate that the Company uses in the Black-Scholes option valuation model is based on U.S. Treasury zero-coupon issues with remaining terms similar to the expected term. The Company has never declared or paid any cash dividends and does not plan to pay cash dividends in the foreseeable future, and, therefore, used an expected dividend yield of zero in the valuation model.

Prior to January 1, 2017, stock-based compensation expense was recorded net of estimated forfeitures in the Company’s condensed consolidated statements of operations and, accordingly, was recorded for only those stock-based awards that the Company expected to vest. Upon the adoption of the accounting standard update (ASU 2016-09, “Improvements to Employee Share-Based payments”) issued by FASB, effective January 1, 2017, the Company changed its accounting policy to account for forfeitures as they occur. The change was applied on a modified retrospective approach with a cumulative effect adjustment of $69,000 to retained earnings as of January 1, 2017 (which increased the accumulated deficit).

The Company estimated the fair value of the market-based awards granted in March 2017 on the date of grant using a Monte Carlo simulation with the following assumptions: volatility 46.7%, risk-free interest rate 1.57% and dividend yield of 0%.

Total compensation cost recognized related to these market-based awards was approximately $368,000 and $415,000 for the three and six months ended June 30, 2017, respectively. As of June 30, 2017, $0.9 million of total unrecognized compensation cost related to these awards is expected to be recognized over a weighted-average period of approximately 0.71 years.

The weighted-average fair value per share of options granted was $1.85 and $1.07 for the three months ended June 30, 2017 and July 1, 2016, respectively. The weighted-average fair value per share of options granted was $1.85 and $0.97 for the six months ended June 30, 2017 and July 1, 2016, respectively.

The fair value of all stock options vested during the three months ended June 30, 2017 and July 1, 2016 was $0.4 million for each period. The fair value of all stock options vested during the six months ended June 30, 2017 and July 1, 2016 was $1.1 million and $1.4 million, respectively.

There were no realized tax benefits attributable to stock options exercised in jurisdictions where this expense is deductible for tax purposes for the three and six months ended June 30, 2017 and July 1, 2016, respectively.

The aggregate fair value of RSUs and PRSUs released during the three months ended June 30, 2017 and July 1, 2016 was $0.8 million and $0.5 million, respectively. The aggregate fair value of all RSUs and PRSUs released during the six months ended June 30, 2017 and July 1, 2016 was $7.4 million and $7.1 million, respectively.

Income Taxes

6 Months Ended

Jun. 30, 2017

Income Tax Disclosure [Abstract]

Income Taxes

INCOME TAXES

The Company reported the following operating results for the periods presented (in thousands):



	Three months ended						Six months ended
	June 30, 2017			July 1, 2016			June 30, 2017			July 1, 2016
Loss before income taxes	$	(30,921	)	$	(20,437	)	$	(55,180	)	$	(45,099	)
Provision for income taxes	579			242			347			760
Effective income tax rate	(1.9		)%	(1.2		)%	(0.6		)%	(1.7		)%

The Company operates in multiple jurisdictions and its profits are taxed pursuant to the tax laws of these jurisdictions. The Company’s effective income tax rate may be affected by changes in, or interpretations of tax laws and tax agreements in any given jurisdiction, utilization of net operating loss and tax credit carry forwards, changes in geographical mix of income and expense, and changes in management’s assessment of matters such as the ability to realize deferred tax assets. The Company’s effective tax rate varies from year to year primarily due to the absence of several onetime, discrete items that benefited or decremented the tax rates in the previous years.

The Company’s effective income tax rate of (0.6)% for the six months ended June 30, 2017 was different from the U.S. federal statutory rate of 35%, primarily due to the Company’s geographical income mix and favorable tax rates associated with certain earnings from operations in lower-tax jurisdictions, partially offset by the increase in the valuation allowance against U.S. federal, California and other state deferred tax assets and detriment from non-deductible stock-based compensation. In addition, in the first quarter of 2017, the Company was able to recognize a one-time tax benefit of approximately $1.2 million as a result of the merger of the Company’s two subsidiaries in Israel, which was approved by the Israeli government in the first quarter of 2017. For the six months ended June 30, 2017, the discrete adjustments to the Company's tax expense were primarily withholding taxes and the accrual of interest on uncertain tax positions.

The Company's effective income tax rate of (1.7)% for the six months ended July 1, 2016 was different from the U.S. federal statutory rate of 35%, primarily due to favorable tax rates associated with certain earnings from operations in lower-tax jurisdictions, and the tax benefit from the realization of certain deferred tax assets as a result of the TVN acquisition, partially offset by the increase in the valuation allowance against U.S. federal, California and other state deferred tax assets, detriment from non-deductible stock-based compensation, non-deductible amortization of foreign intangibles, and the net of various discrete tax adjustments. For the six months ended July 1, 2016, the discrete adjustments to the Company's tax expense were primarily the accrual of interest on uncertain tax positions and withholding taxes as well as a true-up of the tax provision for certain foreign subsidiaries based on the tax returns filed.

The Company files U.S. federal and state, and foreign income tax returns in jurisdictions with varying statutes of limitations during which such tax returns may be audited and adjusted by the relevant tax authorities. The 2013 through 2016 tax years generally remain subject to examination by U.S. federal and most state tax authorities. In significant foreign jurisdictions, the 2007 through 2016 tax years generally remain subject to examination by their respective tax authorities. In 2016, the U.S. Internal Revenue Service concluded its examination of the Company’s income tax return for the tax year 2012, which commenced in August 2015. In addition, a subsidiary of the Company was under audit for the 2012 and 2013 tax years, which commenced in 2015, by the Israel tax authority and concluded with no adjustment. If, upon the conclusion of an audit, the ultimate determination of taxes owed in the jurisdictions under audit is for an amount in excess of the tax provision the Company has recorded in the applicable period, the Company’s overall tax expense, effective tax rate, operating results and cash flow could be materially and adversely impacted in the period of adjustment.

On July 27, 2015, the U.S. Tax Court issued an opinion in Altera Corp. v. Commissioner, 145 T.C. No.3 (2015) related to the treatment of stock-based compensation expense in an intercompany cost-sharing arrangement. A final decision was entered by the U.S. Tax Court on December 1, 2015. On February 19, 2016, the U.S. Internal Revenue Service filed a notice of appeal in Altera Corp. v. Commissioner, 145 T.C. No. 3 (2015), to the Ninth Circuit Court of Appeal. The Ninth Circuit will decide whether a regulation that mandates that stock-based compensation costs related to the intangible development activity of a qualified cost sharing arrangement (a “QCSA”) must be included in the joint cost pool of the QCSA (the “all costs rule”) is consistent with the arm’s length standard as set forth in Section 482 of the Internal Revenue Code. The Company concluded that no adjustment to the consolidated financial statements as of December 31, 2016 is appropriate at this time due to the uncertainties with respect to the ultimate resolution of this case.

The Company’s operations in Switzerland are subject to a reduced tax rate under the Switzerland tax holiday which requires various thresholds of investment and employment in Switzerland. The Company has met these various thresholds and the Switzerland tax holiday is effective through the end of 2018.

As of June 30, 2017, the total amount of gross unrecognized tax benefits, including interest and penalties, was approximately $20.0 million, of which $3.1 million would affect the Company’s effective tax rate if the benefits are eventually recognized. The remaining gross unrecognized tax benefit does not affect the Company’s effective tax rate as it relates to positions that would be settled with tax attributes such as net operating loss carryforward or tax credits previously subject to a valuation allowance. The Company recognizes interest and penalties related to unrecognized tax positions in income tax expense. The Company had $0.5 million of gross interest and penalties accrued as of June 30, 2017. The Company will continue to review its tax positions and provide for, or reverse, unrecognized tax benefits as issues arise. As of June 30, 2017, the Company anticipates that the balance of gross unrecognized tax benefits will decrease up to approximately $2.4 million due to expiration of the applicable statutes of limitations over the next 12 months.

In October 2016, the FASB issued an accounting standard update which requires companies to recognize the income tax consequences of all intra-entity sales of assets other than inventory when they occur. As a result, a reporting entity would recognize the tax expense from the sale of the asset in the seller’s tax jurisdiction when the transfer occurs, even though the pre-tax effects of that transaction are eliminated in consolidation. Any deferred tax asset that arises in the buyer’s jurisdiction would also be recognized at the time of the transfer. The Company early adopted this accounting standard update during the first quarter of fiscal 2017 on a modified retrospective approach and recorded a cumulative-effect adjustment of $1.4 million to the retained earnings as of January 1, 2017 (which reduced the accumulated deficit). Correspondingly, in the first quarter of fiscal 2017, the Company recognized an additional $1.1 million of net deferred tax assets, after netting with $2.1 million of valuation allowance, and write off the remaining $0.3 million of unamortized tax expenses deferred under the previous guidance to provision for income taxes in the first quarter of fiscal 2017.

Income (Loss) Per Share

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Income (Loss) Per Share

NET LOSS PER SHARE

The following table sets forth the computation of the basic and diluted net loss per share (in thousands, except per share amounts):



	Three months ended						Six months ended
	June 30, 2017			July 1, 2016			June 30, 2017			July 1, 2016
Numerator:
Net loss	$	(31,500	)	$	(20,679	)	$	(55,527	)	$	(45,859	)
Denominator:
Weighted average number of common shares outstanding
Basic and diluted	80,590			77,342			80,203			77,168
Net loss per share:
Basic and diluted	$	(0.39	)	$	(0.27	)	$	(0.69	)	$	(0.59	)

The diluted net loss per share is the same as basic net loss per share for the three and six months ended June 30, 2017 and July 1, 2016 because potential common shares are only considered when their effect would be dilutive. The following table sets forth the potential weighted common shares outstanding that were excluded from the computation of basic and diluted net loss per share calculations (in thousands):



	Three months ended		Six months ended
	June 30, 2017	July 1, 2016	June 30, 2017	July 1, 2016
Stock options	4,614	5,428	4,753	5,488
RSUs	3,400	2,247	3,054	2,010
Stock purchase rights under the ESPP	578	652	385	355
Warrants ⁽¹⁾	782	—	782	—
Total	9,374	8,327	8,974	7,853

(1) On September 26, 2016, in connection with the execution of a product supply agreement pursuant to which an affiliate of Comcast Corporation (together with Comcast Corporation, “Comcast”) may, in its sole discretion, purchase from the Company licenses to certain of the Company’s software products, the Company granted Comcast a warrant to purchase shares of its common stock. (See Note 15, “Warrants” for additional information).

Also excluded from the table above are the Notes, which are convertible under certain conditions into an aggregate of 22,304,348 shares of common stock. (See Note 11, “Convertible Notes, Other Debts and Capital Leases” for additional information on the Notes). Since the Company’s intent is to settle the principal amount of the Notes in cash, the treasury stock method is being used to calculate any potential dilutive effect of the conversion spread on diluted net income per share, if applicable. The conversion spread will have a dilutive impact on diluted net income per share when the Company’s average market price of its common stock for a given period exceeds the conversion price of $5.75 per share.

Warrants (Notes)	6 Months Ended
Warrants (Notes)	Jun. 30, 2017
Equity [Abstract]
Warrants Disclosure	WARRANTS On September 26, 2016, the Company issued a Warrant to Comcast pursuant to which Comcast may, subject to certain vesting provisions, purchase up to 7,816,162 shares of the Company’s common stock subject to adjustment in accordance with the terms of the Warrant, for a per share exercise price of $4.76. Comcast may exercise the Warrant for cash or on a net share basis. The Warrant expires on September 26, 2023 or the prior consummation of a change of control of the Company. Comcast’s right to purchase 781,617 shares was vested as of the issuance date as an incentive to enter into the software license product supply agreement. Comcast’s rights to purchase an additional 1,954,042 shares vest upon achievement of milestones that occur upon or prior to Comcast’s election for enterprise license pricing for certain of the Company’s software products. Such pricing would obligate Comcast to make certain total payments to the Company over the term of the product supply agreement. These rights are expected to vest in 2018. Comcast’s rights to purchase an additional 1,172,425 shares vest when Comcast exceeds specified cumulative purchase amounts from the Company under the product supply agreement. Comcast’s rights to purchase the remaining 3,908,081 shares vest in specified tranches at the earlier of Comcast’s enterprise license pricing election (if completed by a certain date) or achievement of specified cumulative purchase amounts from the Company. The $1.6 million value of the vested portion of the Warrant has been determined using the Black-Scholes option valuation model using the following assumptions: expected term of 7 years, volatility of 42%, risk-free interest rate of 1.4%, and expected dividends of 0.0%. The Warrant is considered indexed to the Company’s common stock and classified as stockholders’ equity based on its terms. Accordingly, the vested Warrant amount was included in “Additional paid-in capital” on the Company’s Condensed Consolidated Balance Sheet and will not be remeasured in the future periods. The Warrant is considered an incentive for Comcast to purchase certain of the Company’s products. Therefore the value of the Warrant will be recorded as a reduction in the Company’s net revenues to the extent such value does not exceed net revenues from pertinent sales to Comcast. The portion of the Warrant which vested on September 26, 2016 had a value of approximately $1.6 million and is deemed a customer incentive paid upfront and cumulatively, $0.9 million of this prepaid incentive has been recorded as a reduction to the Company’s net revenues from Comcast. The remaining $0.7 million of this prepaid incentive is reported as an asset under “Prepaid expenses and other current assets” on the Company’s Condensed Consolidated Balance Sheet as of June 30, 2017. The Company considers this asset to be recoverable based on the expectation of Comcast’s future purchases of the pertinent products.

Stockholders' Equity

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Stockholders' Equity

STOCKHOLDERS’ EQUITY

Accumulated Other Comprehensive Income (Loss) (“AOCI”)

The components of AOCI, on an after-tax basis where applicable, were as follows (in thousands):



	Foreign Currency Translation Adjustments			Unrealized Gains (Losses) on Available-for-Sale Investments			Actuarial Loss			Total
Balance as of December 31, 2016	$	(7,267	)	$	276		$	(279	)	$	(7,270	)
Other comprehensive income (loss) before reclassifications	4,883			(613		)	—			4,270
Provision for income taxes	—			(2		)	—			(2		)
Balance as of June 30, 2017	$	(2,384	)	$	(339	)	$	(279	)	$	(3,002	)

The effects of amounts reclassified from AOCI into the Condensed Consolidated Statement of Operations were as follows (in thousands):



	Three months ended					Six months ended
	June 30, 2017		July 1, 2016			June 30, 2017		July 1, 2016
Losses on cash flow hedges from foreign currency contracts:
Cost of revenue	$	—	$	(3	)	$	—	$	(13	)
Operating expenses	—		(19		)	—		(87		)
Total reclassifications from AOCI	$	—	$	(22	)	$	—	$	(100	)

As of June 30, 2017, there was no AOCI balance, and during the six months ended June 30, 2017, there were no reclassifications from AOCI, as there were no cash flow hedge contracts outstanding at June 30, 2017 and December 31, 2016.

Common Stock Repurchases

There were no stock repurchases during the year ended December 31, 2016. Our stock repurchase program expired on December 31, 2016. Further stock repurchases would require authorization from the Board.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

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-URI http://asc.fasb.org/extlink&oid=6521494

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+ Details

Segment Information

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Segment Information

SEGMENT INFORMATION

Operating segments are defined as components of an enterprise that engage in business activities for which separate financial information is available and evaluated by the Company’s Chief Operating Decision Maker ( the “CODM”), which for Harmonic is its Chief Executive Officer, in deciding how to allocate resources and assess performance. Based on our internal reporting structure, the Company consists of two operating segments: Video and Cable Edge. The operating segments were determined based on the nature of the products offered. The Video segment sells video processing and production and playout solutions and services worldwide to broadcast and media companies, streaming new media companies, cable operators, and satellite and telecommunications (telco) Pay-TV service providers. The Cable Edge segment sells cable edge solutions and related services to cable operators globally.

On February 29, 2016, the Company completed its acquisition of 100% of the outstanding equity of TVN and assigned TVN to its Video operating segment.

The Company does not allocate amortization of intangibles, stock-based compensation, restructuring and related charges, TVN acquisition- and integration-related costs, and certain other non-recurring charges to the operating income for each segment because management does not include this information in the measurement of the performance of the operating segments. A measure of assets by segment is not applicable as segment assets are not included in the discrete financial information provided to the CODM.

The following tables provide summary financial information by reportable segment (in thousands):



	Three months ended						Six months ended
	June 30, 2017			July 1, 2016			June 30, 2017			July 1, 2016
Net revenue:
Video	$	73,379		$	90,588		$	147,721		$	155,596
Cable Edge	8,936			18,983			17,537			35,807
Total consolidated net revenue	$	82,315		$	109,571		$	165,258		$	191,403

Operating loss:
Video	$	(8,947	)	$	518		$	(14,783	)	$	(6,829	)
Cable Edge	(7,411		)	(498		)	(13,491		)	(2,351		)
Total segment operating (loss) income	(16,358		)	20			(28,274		)	(9,180		)
Unallocated corporate expenses	(4,853		)	(9,831		)	(8,775		)	(15,510		)
Stock-based compensation	(4,136		)	(2,768		)	(7,387		)	(5,862		)
Amortization of intangibles	(2,075		)	(5,539		)	(4,144		)	(8,322		)
Loss from operations	(27,422		)	(18,118		)	(48,580		)	(38,874		)
Non-operating expense, net	(3,499		)	(2,319		)	(6,600		)	(6,225		)
Loss before income taxes	$	(30,921	)	$	(20,437	)	$	(55,180	)	$	(45,099	)

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

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-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8538-108599

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 29
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8864-108599

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8924-108599

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599

+ Details

Commitments and Contingencies

6 Months Ended

Jun. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

COMMITMENTS AND CONTINGENCIES

Leases

Future minimum lease payments under non-cancelable operating leases as of June 30, 2017 are as follows (in thousands):



Years ending December 31,
2017 (remaining six months)	$	6,759
2018	12,812
2019	10,980
2020	7,521
2021	2,166
Thereafter	8,586
Total	$	48,824

Warranties

The Company accrues for estimated warranty costs at the time of product shipment. Management periodically reviews the estimated fair value of its warranty liability and records adjustments based on the terms of warranties provided to customers, historical and anticipated warranty claims experience, and estimates of the timing and cost of warranty claims. Activity for the Company’s warranty accrual, which is included in accrued and other current liabilities, is summarized below (in thousands):



	Three months ended						Six months ended
	June 30, 2017			July 1, 2016			June 30, 2017			July 1, 2016
Balance at beginning of period	$	4,585		$	4,966		$	4,862		$	3,913
Balance assumed from TVN acquisition	—			—			—			1,012
Accrual for current period warranties	1,277			1,716			2,495			2,975
Changes in liability related to pre-existing warranties	—			(74		)	—			(74		)
Warranty costs incurred	(1,720		)	(1,513		)	(3,215		)	(2,731		)
Balance at end of period	$	4,142		$	5,095		$	4,142		$	5,095

Purchase Obligations

The Company relies on a limited number of contract manufacturers and suppliers to provide manufacturing services for a substantial majority of its products. Obligations to purchase inventory and other commitments are generally expected to be fulfilled within one year. The Company had approximately $30.9 million of non-cancelable commitments to purchase inventories and other commitments as of June 30, 2017.

Standby Letters of Credit and Guarantees

The Company’s financial guarantees consisted of standby letters of credit and bank guarantees. As of June 30, 2017, the Company had $0.7 million of standby letters of credit outstanding primarily related to its credit card facility in Switzerland and, to a lesser extent, performance bond and state requirements imposed on employers. In addition, the Company had $1.9 million of bank guarantees outstanding as of June 30, 2017, of which $1.3 million was related to a building lease for the TVN French Subsidiary, $0.3 million was related to the building leases in Israel, and the remaining amount was mostly related to performance bonds issued to customers of the TVN French Subsidiary.

Indemnification

Harmonic is obligated to indemnify its officers and the members of its Board of Directors (the “Board”) pursuant to its bylaws and contractual indemnity agreements. Harmonic also indemnifies some of its suppliers and most of its customers for specified intellectual property matters pursuant to certain contractual arrangements, subject to certain limitations. The scope of these indemnities varies, but, in some instances, includes indemnification for damages and expenses (including reasonable attorneys’ fees). There have been no amounts accrued in respect of these indemnification provisions through June 30, 2017.

Legal proceedings

From time to time, the Company is involved in lawsuits as well as subject to various legal proceedings, claims, threats of litigation, and investigations in the ordinary course of business, including claims of alleged infringement of third-party patents and other intellectual property rights, commercial, employment, and other matters. The Company assesses potential liabilities in connection with each lawsuit and threatened lawsuits and accrues an estimated loss for these loss contingencies if both of the following conditions are met: information available prior to issuance of the financial statements indicates that it is probable that a liability has been incurred at the date of the financial statements and the amount of loss can be reasonably estimated. While certain matters to which the Company is a party specify the damages claimed, such claims may not represent reasonably probable losses. Given the inherent uncertainties of litigation, the ultimate outcome of these matters cannot be predicted at this time, nor can the amount of possible loss or range of loss, if any, be reasonably estimated.

In October 2011, Avid Technology, Inc. (“Avid”) filed a complaint in the United States District Court for the District of Delaware alleging that Harmonic’s MediaGrid product infringes two patents held by Avid. A jury trial on this complaint commenced on January 23, 2014 and, on February 4, 2014, the jury returned a unanimous verdict in favor of the Company, rejecting Avid’s infringement allegations in their entirety. On May 23, 2014, Avid filed a post-trial motion asking the court to set aside the jury’s verdict, and the judge issued an order on December 17, 2014, denying the motion. On January 5, 2015, Avid filed an appeal with respect to the jury’s verdict with the Federal Circuit, which was docketed on January 9, 2015, as Case No. 2015-1246. Avid filed its opening brief with respect to this appeal on March 24, 2015, the Company filed its response brief on May 7, 2015, and Avid filed its reply brief on June 16, 2015. Oral arguments were held on December 11, 2015. On January 29, 2016, the Federal Circuit issued an order vacating the verdict of noninfringement and remanding the case to the trial court for a new trial on infringement. On February 26, 2016, Harmonic filed a request for rehearing and rehearing en banc at the Federal Circuit. On March 31, 2016, the Federal Circuit denied the request for rehearing and rehearing en banc and a mandate issued on April 8, 2016. The court conducted a supplemental claim construction hearing on May 27, 2016 and issued a claim construction order on June 29, 2016. On June 17, 2016, Harmonic filed requests for ex parte reexaminations for the ’808 and ’309 patents with the United States Patent and Trademark Office (“USPTO”). The USPTO ordered reexamination of both the ’309 and ’808 patents in August 2016. A status conference was held with the District Court on February 23, 2017. On April 10, 2017, the USPTO issued a final office action rejecting the challenged claims of the ’309 patent and affirming all claims of the ’808 patent.

In June 2012, Avid served a subsequent complaint in the United States District Court for the District of Delaware alleging that the Company’s Spectrum product infringes one patent held by Avid. The complaint seeks injunctive relief and unspecified damages. In September 2013, the U.S. Patent Trial and Appeal Board (“PTAB”) authorized an inter partes review to be instituted as to claims 1-16 of the patent asserted in this second complaint. A hearing before the PTAB was conducted on May 20, 2014. On July 10, 2014, the PTAB issued a decision finding claims 1-10 invalid and claims 11-16 not invalid. The Company filed an appeal with respect to the PTAB’s decision on claims 11-16 on September 11, 2014. The appeal was docketed with the Federal Circuit on October 22, 2014, as Case No. 2015-1072, and the Company filed its opening brief with respect to this appeal on January 29, 2015. Avid and PTAB each filed a response brief on April 27, 2015, and the Company filed a reply brief on May 28, 2015. Oral arguments were held on October 8, 2015. The Federal Circuit issued an order on March 1, 2016, affirming the PTAB’s decision and a mandate issued on April 7, 2016.

On July 24, 2017, the court issued a scheduling order consolidating both cases and setting the trial date for November 6, 2017.

The Company is unable to predict the outcome of these lawsuits and therefore is unable to estimate an amount or range of any reasonably possible losses resulting from them. An unfavorable outcome on any litigation matter could require that the Company pay substantial damages, or, in connection with any intellectual property infringement claims, could require that the Company pay ongoing royalty payments or could prevent the Company from selling certain of its products. As a result, a settlement of, or an unfavorable outcome on, any of the matters referenced above or other litigation matters could have a material adverse effect on the Company’s business, operating results, financial condition and cash flows.

Subsequent Event	6 Months Ended
Subsequent Event	Jun. 30, 2017
Subsequent Events [Abstract]
Subsequent Events [Text Block]	SUBSEQUENT EVENT Harmonic 2017 Restructuring In the third quarter of 2017, the Company committed to a new restructuring plan (the “Harmonic 2017 Restructuring Plan”) to better align its operating costs with the continued decline in its net revenues. The restructuring activities under the Harmonic 2017 Restructuring Plan primarily include workforce reductions of the company worldwide. The estimated cost for the Harmonic 2017 Restructuring Plan is approximately $2.8 million. The restructuring activities under the Harmonic 2017 Restructuring Plan will commence in the third quarter of 2017 and are expected to continue into the fourth quarter of 2017.

Basis of Presentation and Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2017

Accounting Policies [Abstract]

Use of Estimates

The preparation of the condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.

Business Combinations Policy

On February 29, 2016, the Company completed the acquisition of Thomson Video Networks (“TVN”). TVN is now a part of the Company’s Video segment and its results of operations are included in the Company’s Condensed Consolidated Statements of Operations beginning March 1, 2016. During the fourth quarter of 2016, the Company completed the accounting for this business combination.

Significant Accounting Policies

The Company’s significant accounting policies are described in Note 2 to its audited Consolidated Financial Statements included in the 2016 Form 10-K. There have been no significant changes to these policies during the six months ended June 30, 2017 other than those disclosed in Note 2, “Standards Implemented”.

Recent Accounting Pronouncements

RECENT ACCOUNTING PRONOUNCEMENTS

New standards to be implemented

In May 2014, the Financial Accounting Standards Board (“FASB”) issued a new standard, Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers, as amended, which will supersede nearly all existing revenue recognition guidance. Under ASU 2014-09, an entity is required to recognize revenue upon transfer of promised goods or services to customers in an amount that reflects the expected consideration received in exchange for those goods or services. ASU No. 2014-09 defines a five-step process in order to achieve this core principle, which may require the use of judgment and estimates, and also requires expanded qualitative and quantitative disclosures relating to the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers, including significant judgments and estimates used.

The FASB has issued several amendments to the new standard, including clarification on accounting for licenses of intellectual property and identifying performance obligations. The amendments include ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606)-Principal versus Agent Considerations, which was issued in March 2016, and clarifies the implementation guidance for principal versus agent considerations in ASU 2014-09, and ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606)-Identifying Performance Obligations and Licensing, which was issued in April 2016, and amends the guidance in ASU No. 2014-09 related to identifying performance obligations and accounting for licenses of intellectual property. The new standard permits adoption either by using (i) a full retrospective approach for all periods presented in the period of adoption or (ii) a modified retrospective approach with the cumulative effect of initially applying the new standard recognized at the date of initial application and providing certain additional disclosures. The new standard is effective for annual reporting periods beginning after December 15, 2017, with early adoption permitted for annual reporting periods beginning after December 15, 2016. The Company does not plan to early adopt, and accordingly, it will adopt the new standard effective January 1, 2018.

The Company currently plans to adopt using the modified retrospective approach. However, a decision regarding the adoption method has not been finalized at this time. The Company’s final determination will depend on a number of factors, such as the significance of the impact of the new standard on its financial results, system readiness, including that of software procured from third-party providers, and its ability to accumulate and analyze the information necessary to assess the impact on prior period financial statements, as necessary.

The Company is in the initial stages of its evaluation of the impact of the new standard on its accounting policies, processes, and system requirements. The Company has made and will continue to make investments in systems to enable timely and accurate reporting under the new standard. While the Company continues to assess all potential impacts under the new standard, there is the potential for significant impacts to the timing of recognition of software licenses with undelivered features and professional services revenue related to service contracts with acceptance terms as well as contract acquisition costs, both with respect to the amounts that will be capitalized as well as the period of amortization.

Under current industry-specific software revenue recognition guidance, the Company has historically concluded that it did not have vendor-specific objective evidence (“VSOE”) of fair value of the undelivered features relating to delivered software licenses, and accordingly, it has deferred entire revenue for such software licenses until the delivery of features. Professional services included in arrangements with acceptances have also been recognized on receipt of acceptance. The new standard, which does not retain the concept of VSOE, requires an evaluation of whether the undelivered features are distinct performance obligations and, therefore, should be separately recognized when delivered compared to the timing of delivery of software license. Professional services will generally be recorded as services are provided. Depending on the outcome of the Company’s evaluation, the timing of when revenue is recognized could change for future features and professional services under the new standard.

As part of the Company’s preliminary evaluation, it has also considered the impact of the guidance in ASC 340-40, Other Assets and Deferred Costs; Contracts with Customers, and the interpretations of the FASB Transition Resource Group for Revenue Recognition (“TRG”) from their November 7, 2016 meeting with respect to capitalization and amortization of incremental costs of obtaining a contract. As a result of this new guidance, the Company is currently assessing if it will need to capitalize any costs of obtaining the contract, including additional sales commissions. Under the Company’s current accounting policy, it expenses the commission costs immediately as incurred.

While the Company continues to assess the potential impacts of the new standard, including the areas described above, the Company does not know or cannot reasonably estimate quantitative information related to the impact of the new standard on its financial statements at this time.

In January 2016, the FASB issued an accounting standard update which requires equity investments to be measured at fair value with changes in fair value recognized in net income and simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. The accounting standard update also updates certain presentation and disclosure requirements. This accounting standard update will be effective for the Company beginning in the first quarter of fiscal 2018 and early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements.

In February 2016, the FASB amended the existing accounting standard for lease accounting. Under this guidance, lessees and lessors should apply a “right-of-use” model in accounting for all leases (including subleases) and eliminate the concept of operating leases and off-balance sheet leases. This new leases standard requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. The new standard will be effective for the Company beginning in the first quarter of fiscal 2019 and early adoption is permitted. The Company is currently evaluating the methods and impact of adopting this new leases standard on its consolidated financial statements.

In June 2016, the FASB issued new guidance that changes the impairment model for most financial assets and certain other instruments. For trade receivables and other instruments, the Company will be required to use a new forward-looking “expected loss” model. Additionally, credit losses on available-for-sale debt securities should be recorded through an allowance for credit losses limited to the amount by which fair value is below amortized cost. The new guidance will be effective for the Company beginning in the first quarter of fiscal 2019 and early adoption is permitted. The Company is currently evaluating the impact of adopting this new accounting guidance on its consolidated financial statements.

In August 2016, the FASB issued an accounting standard update that addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. This accounting standard update will be effective for the Company beginning in the first quarter of fiscal 2018 and early adoption is permitted. The Company is currently evaluating the methods and impact of adopting the new accounting standard on its consolidated financial statements.

In November 2016, the FASB issued an accounting standard update which requires companies to include restricted cash and restricted cash equivalents in its cash and cash equivalent balances in the statement of cash flows. Transfers between cash, cash equivalents, restricted cash, and restricted cash equivalents are no longer presented in the statement of cash flows. The new guidance requires a reconciliation of the totals in the statement of cash flows to the related captions. This accounting standard update will be effective for the Company beginning in the first quarter of fiscal 2018 and early adoption is permitted. The adoption of this new guidance is not expected to have a material impact on the Company’s consolidated financial statements.

In January 2017, the FASB issued an accounting standard update to simplify the test for goodwill impairment. It removes Step 2 of the goodwill impairment test and requires the assessment of fair value of individual assets and liabilities of a reporting unit to measure goodwill impairments. Goodwill impairment will now be the amount by which a reporting unit's carrying value exceeds its fair value. The accounting standard update will be effective for the Company beginning in the first quarter of fiscal 2020 on a prospective basis, and early adoption is permitted. The Company is currently evaluating the impact of adopting this new accounting guidance on its consolidated financial statements.

In March 2017, the FASB issued a new accounting standard to improve the presentation of net periodic pension cost and net periodic post-retirement benefit cost. This new standard will be effective for the Company beginning in the first quarter of fiscal 2018 and early adoption is permitted. The Company is currently evaluating the impact of adopting this new accounting guidance on its consolidated financial statements.

In May 2017, the FASB issued a new accounting standard to clarify when to account for a change to the terms or conditions for a share-based payment award as a modification. It requires modification accounting only if the fair value, the vesting condition or the classification of the award changes as a result of the change in terms or conditions. This new standard will be effective for the Company beginning in the first quarter of fiscal 2018 and early adoption is permitted. The Company is currently evaluating the impact of adopting this new accounting guidance on its consolidated financial statements.

Standards Implemented

In February 2015, the FASB issued an accounting standard update that changes the analysis that a reporting entity must perform to determine whether it should consolidate certain types of legal entities. The accounting standard update became effective for the Company beginning in the first quarter of fiscal 2017. The application of this accounting standard update did not have any impact on the Company's Consolidated Balance Sheet or Statement of Operations upon adoption.

In July 2015, the FASB issued an accounting standard update that requires inventory to be measured at the lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. The Company adopted this accounting standard update beginning in the first quarter of fiscal 2017 and the adoption did not have a material impact on its consolidated financial statements.

In March 2016, the FASB issued an accounting standard update to clarify the requirements for assessing whether contingent call (put) options that can accelerate the payment of principal on debt instruments are clearly and closely related to their debt hosts. An entity performing the assessment under the amendments is required to assess the embedded call (put) options solely in accordance with the four-step decision sequence. The Company adopted this accounting standard update beginning in the first quarter of fiscal 2017 and the adoption did not have any impact on its consolidated financial statements.

In March 2016, the FASB issued an accounting standard update for the accounting of share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. The new standard eliminated the requirement to report excess tax benefits and certain tax deficiencies related to share-based payment transactions as additional paid-in capital. It also removes the requirement to delay recognition of a windfall tax benefit until it reduces current taxes payable. Under the new guidance, the benefit will be recorded when it arises, subject to normal valuation allowance considerations. The Company adopted this new accounting standard beginning in the first quarter of fiscal 2017 using a modified-retrospective transition method and recorded a cumulative effect of $4.6 million of additional gross deferred tax asset associated with shared-based payment and an offsetting valuation allowance of the same amount, therefore resulting in no net impact to the Company’s beginning retained earnings. Prior to January 1, 2017, stock-based compensation expense was recorded net of estimated forfeitures in the Company’s condensed consolidated statements of operations and, accordingly, was recorded for only those stock-based awards that the Company expected to vest. Upon the adoption of this accounting standard update, effective January 1, 2017, the Company changed its accounting policy to account for forfeitures as they occur. The change was applied on a modified retrospective approach with a cumulative effect adjustment of $69,000 to retained earnings as of January 1, 2017 (which increased the accumulated deficit). The implementation of this accounting standard update has no impact to the Company’s condensed statement of cash flows because the Company does not have any excess tax benefits from share-based compensation because its tax provision is primarily under full valuation allowance. No prior periods were recast as a result of this change in accounting policy.

In January 2017, the FASB issued an accounting standard update to clarify the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The definition of a business affects many areas of accounting including acquisitions, disposals, goodwill and consolidation. The guidance will be effective for the Company beginning in the first quarter of fiscal 2018 on a prospective basis, and early adoption is permitted. The adoption of this new guidance is not expected to have a material impact on the Company’s consolidated financial statements.

Short-term Investment Policy

Investments in Other Equity Securities

The assessment as to the nature of a decline in fair value is based on, among other things, the length of time and the extent to which the market value has been less than the Company’s cost basis; the financial condition and near-term prospects of the investment; and the Company’s intent and ability to retain the investment for a period of time sufficient to allow for any anticipated recovery in market value.

Derivatives and Hedging Activities

Derivatives Not Designated as Hedging Instruments (Balance Sheet Hedges)

Offsetting of Derivative Assets and Liabilities

Fair Value of Financial Instruments


•	Level 1 — Observable inputs that reflect quoted prices for identical assets or liabilities in active markets.

•


•	Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

During the six months ended June 30, 2017, there were no nonrecurring fair value measurements of assets and liabilities subsequent to initial recognition.

Goodwill and Intangible Assets, Goodwill

Restructuring and Related Charges

The fair value of these liabilities is based on a net present value model using a credit-adjusted risk-free rate. The liability will be paid out over the remainder of the leased properties’ terms, which continue through August 2020.

Share-based Compensation Expense

Income Tax

The Company recognizes interest and penalties related to unrecognized tax positions in income tax expense. The Company had $0.5 million of gross interest and penalties accrued as of June 30, 2017. The Company will continue to review its tax positions and provide for, or reverse, unrecognized tax benefits as issues arise. As of June 30, 2017, the Company anticipates that the balance of gross unrecognized tax benefits will decrease up to approximately $2.4 million due to expiration of the applicable statutes of limitations over the next 12 months.

Segment Information

On February 29, 2016, the Company completed its acquisition of 100% of the outstanding equity of TVN and assigned TVN to its Video operating segment.

Warranties and Indemnification

Business Acquisitions (Tables)

6 Months Ended

Jun. 30, 2017

Business Acquisition, Pro Forma Information [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

The Company’s allocation of TVN purchase consideration is as follows (in thousands):



Assets:
Cash and cash equivalents	$	6,843
Accounts receivable, net	14,933
Inventories	3,462
Prepaid expenses and other current assets	2,412
Property and equipment, net	9,942
French R&D tax credit receivables ⁽¹⁾	26,421
Other long-term assets	2,134
Total assets	$	66,147
Liabilities:
Other debts and capital lease obligations, current	8,362
Accounts payable	12,494
Deferred revenue	2,504
Accrued and other current liabilities	18,365
Other debts and capital lease obligations, long-term	16,087
Other non-current liabilities	6,467
Deferred tax liabilities	2,126
Total liabilities	$	66,405

Goodwill	41,670
Intangibles	41,100
Total purchase consideration	$	82,512

(1) See Note 8, “Balance Sheet Components-Prepaid expenses and other current assets” for more information on French R&D tax credit receivables.

Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination

The following table presents details of the intangible assets acquired through this business combination (in thousands, except years):



	Estimated Useful Life (in years)	Fair Value
Backlog	6 months	$	3,600
Developed technology	4 years	21,700
Customer relationships	5 years	15,200
Trade name	4 years	600
		$	41,100

Business Combination Acquisition And Integration Cost

As a result of the TVN acquisition, the Company incurred acquisition-and integration-related expenses and the amounts are summarized in the table below (in thousands):



	Acquisition-related				Integration-related
	Three months ended		Six months ended		Three months ended				Six months ended
	July 1, 2016				June 30, 2017		July 1, 2016		June 30, 2017		July 1, 2016
Product cost of revenue	$	—	$	—	$	—	$	433	$	342	$	491
Research and development	—		—		—		500		7		550
Selling, general and administrative	885		3,321		467		1,585		2,268		2,137
Total acquisition- and integration-related expenses	$	885	$	3,321	$	467	$	2,518	$	2,617	$	3,178

Business Acquisition, Pro Forma Information



	Six months ended
	July 1, 2016
(in millions, except per share amounts)
Net revenue	$	200.1
Net loss	(40.3		)
Net loss per share-basic and diluted	$	(0.52	)

Short-Term Investments (Tables)

6 Months Ended

Jun. 30, 2017

Cash and Cash Equivalents [Abstract]

Summary of Short-Term Investments

The following table summarizes the Company’s short-term investments as of December 31, 2016 (in thousands):



	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
As of December 31, 2016
Corporate bonds	$	6,928	$	—	$	(5	)	$	6,923
Total short-term investments	$	6,928	$	—	$	(5	)	$	6,923

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References + Details

Derivative and Hedging Activities (Tables)

6 Months Ended

Jun. 30, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments gain and losses by Statement of Operations locations



		Three months ended						Six months ended
	Financial Statement Location	June 30, 2017			July 1, 2016			June 30, 2017			July 1, 2016
Derivatives designated as hedging instruments:
Loss in AOCI on derivatives (effective portion)	AOCI	$	—		$	(165	)	$	—		$	158
Loss reclassified from AOCI into income (effective portion)	Cost of Revenue	$	—		$	(3	)	$	—		$	(13	)
	Operating Expense	—			(19		)	—			(87		)
	Total	$	—		$	(22	)	$	—		$	(100	)
Losses recognized in income on derivatives (ineffectiveness portion and amount excluded from effectiveness testing)	Other expense, net	$	—		$	(22	)	$	—		$	(49	)
Derivatives not designated as hedging instruments:
Loss recognized in income	Other expense, net	$	(53	)	$	(50	)	$	(185	)	$	(334	)

Schedule of Notional Amounts of Outstanding Derivative Positions

The U.S. dollar equivalents of all outstanding notional amounts of foreign currency forward contracts are summarized as follows (in thousands):



	June 30, 2017		December 31, 2016
Derivatives not designated as hedging instruments:
Purchase	$	9,911	$	4,056
Sell	$	5,970	$	11,157

Schedule of Derivatives Instruments Balance Sheet Location

The locations and fair value amounts of the Company’s derivative instruments reported in its Condensed Consolidated Balance Sheets are as follows (in thousands):



		Asset Derivatives					Derivative Liabilities
	Balance Sheet Location	June 30, 2017		December 31, 2016		Balance Sheet Location	June 30, 2017		December 31, 2016
Derivatives not designated as hedging instruments:
Foreign currency contracts	Prepaid expenses and other current assets	$	118	$	54	Accrued Liabilities	$	64	$	40
Total derivatives		$	118	$	54		$	64	$	40

Changes in fair values of non-designated foreign currency forward contracts

As of June 30, 2017, information related to the offsetting arrangements was as follows (in thousands):



						Gross Amounts of Derivatives Not Offset in the Condensed Consolidated Balance Sheets
	Gross Amounts of Derivatives		Gross Amounts of Derivatives Offset in the Condensed Consolidated Balance Sheets	Net Amounts of Derivatives Presented in the Condensed Consolidated Balance Sheets		Financial Instrument			Cash Collateral Pledged	Net Amount
Derivative Assets	$	118	—	$	118	$	(11	)	—	$	107
Derivative Liabilities	$	64	—	$	64	$	(11	)	—	$	53

- Definition

Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41641-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41678-113959

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41638-113959

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5580258-113959

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579245-113959

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579240-113959

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41620-113959

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(n)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Financial Assets and Liabilities Measured at Fair Value Based on Three-Tier Fair Value Hierarchy



	Level 1		Level 2		Level 3		Total
As of June 30, 2017
Cash equivalents
Money market funds	$	246	$	—	$	—	$	246
Prepaids and other current assets
Derivative assets	—		118		—		118
Other assets
Long-term investment	192		—		—		192
Total assets measured and recorded at fair value	$	438	$	118	$	—	$	556
Accrued and other current liabilities
Derivative liabilities	$	—	$	64	$	—	$	64
Accrued TVN VDP, current portion	—		—		3,915		3,915
Other non-current liabilities
Accrued TVN VDP, long-term portion	—		—		3,247		3,247
Total liabilities measured and recorded at fair value	$	—	$	64	$	7,162	$	7,226
	Level 1		Level 2		Level 3		Total
As of December 31, 2016
Cash equivalents
Money market funds	$	8,301	$	—	$	—	$	8,301
Corporate bonds	—		6,923		—		6,923
Prepaids and other current assets
Derivative assets	—		54		—		54
Other assets
Long-term investment	809		—		—		809
Total assets measured and recorded at fair value	$	9,110	$	6,977	$	—	$	16,087
Accrued and other current liabilities
Derivative liabilities	$	—	$	40	$	—	$	40
Accrued TVN VDP, current portion	—		—		6,597		6,597
Other non-current liabilities
Accrued TVN VDP, long-term portion	—		—		3,053		3,053
Total liabilities measured and recorded at fair value	$	—	$	40	$	9,650	$	9,690

Balance Sheet Components (Tables)

6 Months Ended

Jun. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Accounts Receivable, Net



	June 30, 2017			December 31, 2016
Accounts receivable, net:
Accounts receivable	$	66,892		$	91,596
Less: allowances for doubtful accounts, returns and discounts	(6,465		)	(4,831		)
Total	$	60,427		$	86,765

Prepaid, and Other Current Assets



	June 30, 2017		December 31, 2016
Prepaid expenses and other current assets:
Deferred cost of revenue	$	5,615	$	6,856
French R&D tax credits receivable⁽¹⁾	6,277		5,895
Prepaid maintenance, royalty, rent, property taxes and value added tax	6,574		5,526
Prepaid customer incentive⁽²⁾	746		1,162
Restricted cash⁽³⁾	802		731
Other	4,304		6,149
Total	$	24,318	$	26,319

Inventories



	June 30, 2017		December 31, 2016
Inventories:
Raw materials	$	9,179	$	9,889
Work-in-process	1,789		2,318
Finished goods	11,643		17,776
Service-related spares	12,519		11,210
Total	$	35,130	$	41,193

Property, Plant and Equipment



	June 30, 2017			December 31, 2016
Property and equipment, net:
Machinery and equipment	$	86,841		$	97,989
Capitalized software	32,639			34,519
Leasehold improvements	14,406			14,455
Furniture and fixtures	6,780			8,993
Property and equipment, gross	140,666			155,956
Less: accumulated depreciation and amortization	(109,042		)	(123,792		)
Total	$	31,624		$	32,164

Accrued Liabilities



	June 30, 2017		December 31, 2016
Accrued Liabilities:
Accrued employee compensation and related expenses	$	17,671	$	19,377
Accrued TVN VDP, current ⁽¹⁾	3,915		6,597
Accrued warranty	4,142		4,862
Customer deposits	3,848		4,537
Contingent inventory reserves	3,671		2,210
Accrued royalty payments	2,797		1,912
Others	14,228		15,655
Total	$	50,272	$	55,150

(1) See Note 10, “Restructuring and related charges-TVN VDP,” for additional information on the Company’s TVN VDP liabilities.

Goodwill and Identified Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill by reportable segments for the six months ended June 30, 2017 were as follows (in thousands):



	Video		Cable Edge		Total
Balance as of December 31, 2016	$	176,519	$	60,760	$	237,279
Foreign currency translation adjustment	3,261		30		3,291
Balance as of June 30, 2017	$	179,780	$	60,790	$	240,570

Summary of Goodwill and Identified Intangible Assets

The following is a summary of intangible assets (in thousands):



		June 30, 2017							December 31, 2016
	Weighted Average Remaining Life (Years)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Developed core technology	2.7	$	31,708	$	(17,807	)	$	13,901	$	31,707	$	(15,216	)	$	16,491
Customer relationships/contracts	3.7	44,643		(33,641		)	11,002		44,384		(32,098		)	12,286
Trademarks and trade names	2.7	621		(207		)	414		573		(119		)	454
Maintenance agreements and related relationships	N/A	5,500		(5,500		)	—		5,500		(5,500		)	—
Order Backlog	N/A	3,011		(3,011		)	—		3,011		(3,011		)	—
Total identifiable intangibles		$	85,483	$	(60,166	)	$	25,317	$	85,175	$	(55,944	)	$	29,231

Amortization Expense for Identifiable Purchased Intangible Assets

Amortization expense for the identifiable purchased intangible assets for the three and six months ended June 30, 2017 and July 1, 2016 was allocated as follows (in thousands):



	Three months ended				Six months ended
	June 30, 2017		July 1, 2016		June 30, 2017		July 1, 2016
Included in cost of revenue	$	1,295	$	1,307	$	2,590	$	1,725
Included in operating expenses	780		4,232		1,554		6,597
Total amortization expense	$	2,075	$	5,539	$	4,144	$	8,322

Estimated Future Amortization Expense of Purchased Intangible Assets

The estimated future amortization expense of purchased intangible assets with definite lives is as follows (in thousands):



	Cost of Revenue		Operating Expenses		Total
Year ended December 31,
2017 (remaining six months)	$	2,590	$	1,578	$	4,168
2018	5,180		3,156		8,336
2019	5,180		3,156		8,336
2020	951		3,026		3,977
2021	—		500		500
Total future amortization expense	$	13,901	$	11,416	$	25,317

Restructuring and Related Charges (Tables)

6 Months Ended

Jun. 30, 2017

Restructuring Cost and Reserve [Line Items]

Summary of restructuring activities

The following table summarizes the restructuring and related charges (in thousands):



	Three months ended				Six months ended
	June 30, 2017		July 1, 2016		June 30, 2017		July 1, 2016
Restructuring and related charges in:
Product cost of revenue	$	278	$	6	$	786	$	(23	)
Operating expenses-Restructuring and related charges	777		1,903		2,056		4,515
Total restructuring and related charges	$	1,055	$	1,909	$	2,842	$	4,492

Harmonic 2016 Restructuring Plan [Member]

Restructuring Cost and Reserve [Line Items]

Schedule of Restructuring Reserve by Type of Cost

The following table summarizes the activity in the Company’s restructuring accrual related to the Harmonic 2016 Restructuring Plan during the six months ended June 30, 2017 (in thousands):



	Excess facilities			VDP ⁽¹⁾			Severance and benefits ⁽²⁾			Total
Balance at December 31, 2016	$	2,375		$	9,650		$	1,519		$	13,544
Charges for 2016 Harmonic Restructuring Plan	48			1,777			973			2,798
Adjustments to restructuring provisions							44			44
Cash payments	(676		)	(4,862		)	(2,067		)	(7,605		)
Foreign exchange gain				597			31			628
Balance at June 30, 2017	1,747			7,162			500			9,409
Less: current portion ⁽³⁾	(854		)	(3,915		)	(500		)	(5,269		)
Long-term portion ⁽³⁾	$	893		$	3,247		$	—		$	4,140

(1) See discussion of the TVN VDP above for future estimated payments through 2020.

(2) The Company anticipates that the remaining severance and benefits accrual at June 30, 2017 will be fully paid in 2017.

TVN [Member] | TVN Voluntary Departure Plan [Member]

Restructuring Cost and Reserve [Line Items]

Restructuring estimated future payments by years [Table Text Block]

The table below shows the estimated future payments for TVN VDP as of June 30, 2017 (in thousands):



Years ending December 31,
2017 (remaining six months)	$	2,349
2018	3,302
2019	1,651
2020	783
Total	$	8,085

Convertible Notes, Other Debts And Capital Leases (Tables)

6 Months Ended

Jun. 30, 2017

Debt Disclosure [Abstract]

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments

The following table presents the components of the Notes as of June 30, 2017 and December 31, 2016 (in thousands, except for years and percentages):



	June 30, 2017			December 31, 2016
Liability:
Principal amount	$	128,250		$	128,250
Less: Debt discount, net of amortization	(19,914		)	(22,302		)
Less: Debt issuance costs, net of amortization	(2,401		)	(2,689		)
Carrying amount	$	105,935		$	103,259
Remaining amortization period (years)	3.4			3.9
Effective interest rate on liability component	9.94		%	9.94		%

Equity:
Value of conversion option	$	26,925		$	26,925
Less: Equity issuance costs	(863		)	(863		)
Carrying amount	$	26,062		$	26,062

Convertible Debt Interest

The following table presents interest expense recognized for the Notes (in thousands):



	Three months ended				Six months ended
	June 30, 2017		July 1, 2016		June 30, 2017		July 1, 2016
Contractual interest expense	$	1,282	$	1,282	$	2,565	$	2,565
Amortization of debt discount	1,214		1,098		2,388		2,157
Amortization of debt issuance costs	146		132		288		260
Total interest expense recognized	$	2,642	$	2,512	$	5,241	$	4,982

Schedule of Other Debt and Capital Leases



	June 30, 2017			December 31, 2016
Financing from French government agencies related to various government incentive programs ⁽¹⁾	$	13,597		$	17,930
Term loans ⁽²⁾	1,369			1,400
Obligations under capital leases	1,456			1,860
Total debt obligations	16,422			21,190
Less: current portion	(7,130		)	(7,275		)
Long-term portion	$	9,292		$	13,915

Schedule of Maturities of Long-term Debt

The table below shows the future minimum repayments of debts and capital lease obligations for TVN as of June 30, 2017 (in thousands):



Years ending December 31,	Capital lease obligations		Other Debt obligations
2017 (remaining six months)	$	492	$	673
2018	868		5,873
2019	69		6,782
2020	27		601
2021	—		489
Thereafter	—		548
Total	$	1,456	$	14,966

Employee Benefit Plans and Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Company's Stock Option and Restricted Stock Unit Activity



			Stock Options Outstanding				RSUs Outstanding*
	Shares Available for Grant		Number of Shares		Weighted Average Exercise Price		Number of Units		Weighted Average Grant Date Fair Value
Balance at December 31, 2016	3,912		5,019		$	6.01	3,864		$	4.26
Authorized	7,400		—		—		—		—
Granted	(4,008	)	30		5.10		2,651		5.46
Options exercised	—		(94	)	3.06		—
Shares released	—		—		—		(1,883	)	3.92
Forfeited	1,584		(469	)	6.13		(744	)	4.96
Balance at June 30, 2017	8,888		4,486		$	6.06	3,888		$	5.11

Summary of Stock Options Outstanding

The following table summarizes information about stock options outstanding as of June 30, 2017 (in thousands, except per share amounts and terms):



	Number of Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Vested and expected to vest	4,389	$	6.08	3.2	$	2,045
Exercisable	3,497	6.33		2.7	1,079

Summary of Restricted Stock Units Outstanding

The following table summarizes information about RSUs and PRSUs outstanding as of June 30, 2017 (in thousands, except term):



	Number of Shares Underlying Restricted Stock Units	Weighted Average Remaining Vesting Period (Years)	Aggregate Fair Value
Vested and expected to vest	2,893	0.9	$	15,190

Schedule of Defined Benefit Plans Obligations

The table below shows the components of net periodic benefit costs (in thousands):



	Three months ended				Six months ended
	June 30, 2017		July 1, 2016		June 30, 2017		July 1, 2016
Service cost	$	55	$	71	$	110	$	94
Interest cost	16		29		32		39
Recognized net actuarial loss	2		—		3		—
Net periodic benefit cost included in operating loss	$	73	$	100	$	145	$	133

Summary of Stock-Based Compensation Expense

Stock-based Compensation

The following table summarizes stock-based compensation expense for all plans (in thousands):



	Three months ended				Six months ended
	June 30, 2017		July 1, 2016		June 30, 2017		July 1, 2016
Stock-based compensation in:
Cost of revenue	$	700	$	424	$	1,145	$	651
Research and development expense	1,337		841		2,314		1,810
Selling, general and administrative expense	2,099		1,503		3,928		3,401
Total stock-based compensation in operating expense	3,436		2,344		6,242		5,211
Total stock-based compensation	$	4,136	$	2,768	$	7,387	$	5,862

Valuation Assumptions for Stock Options



	Employee Stock Options
	Three months ended				Six months ended
	June 30, 2017		July 1, 2016		June 30, 2017		July 1, 2016
Expected term (years)	4.30		4.30		4.30		4.30
Volatility	43	%	36	%	43	%	36	%
Risk-free interest rate	1.7	%	1.1	%	1.7	%	1.4	%
Expected dividends	0.0	%	0.0	%	0.0	%	0.0	%

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions



	ESPP Purchase Period Ending
	July 3, 2017		June 30, 2016
Expected term (years)	0.49		0.5
Volatility	41	%	54	%
Risk-free interest rate	1.0	%	0.4	%
Expected dividends	0.0	%	0.0	%
Estimated weighted average fair value per share at purchase date	$1.40		$1.19

Income Taxes (Tables)

6 Months Ended

Jun. 30, 2017

Income Tax Disclosure [Abstract]

Schedule of income before income tax

The Company reported the following operating results for the periods presented (in thousands):



	Three months ended						Six months ended
	June 30, 2017			July 1, 2016			June 30, 2017			July 1, 2016
Loss before income taxes	$	(30,921	)	$	(20,437	)	$	(55,180	)	$	(45,099	)
Provision for income taxes	579			242			347			760
Effective income tax rate	(1.9		)%	(1.2		)%	(0.6		)%	(1.7		)%

Income (Loss) Per Share (Tables)

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Numerators and Denominators of Basic and Diluted Net Income (Loss) Per Share Computations

The following table sets forth the computation of the basic and diluted net loss per share (in thousands, except per share amounts):



	Three months ended						Six months ended
	June 30, 2017			July 1, 2016			June 30, 2017			July 1, 2016
Numerator:
Net loss	$	(31,500	)	$	(20,679	)	$	(55,527	)	$	(45,859	)
Denominator:
Weighted average number of common shares outstanding
Basic and diluted	80,590			77,342			80,203			77,168
Net loss per share:
Basic and diluted	$	(0.39	)	$	(0.27	)	$	(0.69	)	$	(0.59	)

Anti-dilutive Securities

The following table sets forth the potential weighted common shares outstanding that were excluded from the computation of basic and diluted net loss per share calculations (in thousands):



	Three months ended		Six months ended
	June 30, 2017	July 1, 2016	June 30, 2017	July 1, 2016
Stock options	4,614	5,428	4,753	5,488
RSUs	3,400	2,247	3,054	2,010
Stock purchase rights under the ESPP	578	652	385	355
Warrants ⁽¹⁾	782	—	782	—
Total	9,374	8,327	8,974	7,853

Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Components of Accumulated Other Comprehensive Loss

The components of AOCI, on an after-tax basis where applicable, were as follows (in thousands):



	Foreign Currency Translation Adjustments			Unrealized Gains (Losses) on Available-for-Sale Investments			Actuarial Loss			Total
Balance as of December 31, 2016	$	(7,267	)	$	276		$	(279	)	$	(7,270	)
Other comprehensive income (loss) before reclassifications	4,883			(613		)	—			4,270
Provision for income taxes	—			(2		)	—			(2		)
Balance as of June 30, 2017	$	(2,384	)	$	(339	)	$	(279	)	$	(3,002	)

The effects of amounts reclassified from AOCI into the Condensed Consolidated Statement of Operations were as follows (in thousands):



	Three months ended					Six months ended
	June 30, 2017		July 1, 2016			June 30, 2017		July 1, 2016
Losses on cash flow hedges from foreign currency contracts:
Cost of revenue	$	—	$	(3	)	$	—	$	(13	)
Operating expenses	—		(19		)	—		(87		)
Total reclassifications from AOCI	$	—	$	(22	)	$	—	$	(100	)

Segment Information (Tables)

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Segment Reporting Information, by Segment

The following tables provide summary financial information by reportable segment (in thousands):



	Three months ended						Six months ended
	June 30, 2017			July 1, 2016			June 30, 2017			July 1, 2016
Net revenue:
Video	$	73,379		$	90,588		$	147,721		$	155,596
Cable Edge	8,936			18,983			17,537			35,807
Total consolidated net revenue	$	82,315		$	109,571		$	165,258		$	191,403

Operating loss:
Video	$	(8,947	)	$	518		$	(14,783	)	$	(6,829	)
Cable Edge	(7,411		)	(498		)	(13,491		)	(2,351		)
Total segment operating (loss) income	(16,358		)	20			(28,274		)	(9,180		)
Unallocated corporate expenses	(4,853		)	(9,831		)	(8,775		)	(15,510		)
Stock-based compensation	(4,136		)	(2,768		)	(7,387		)	(5,862		)
Amortization of intangibles	(2,075		)	(5,539		)	(4,144		)	(8,322		)
Loss from operations	(27,422		)	(18,118		)	(48,580		)	(38,874		)
Non-operating expense, net	(3,499		)	(2,319		)	(6,600		)	(6,225		)
Loss before income taxes	$	(30,921	)	$	(20,437	)	$	(55,180	)	$	(45,099	)

Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Future Minimum Lease Payments Under Non-cancelable Operating Leases

Future minimum lease payments under non-cancelable operating leases as of June 30, 2017 are as follows (in thousands):



Years ending December 31,
2017 (remaining six months)	$	6,759
2018	12,812
2019	10,980
2020	7,521
2021	2,166
Thereafter	8,586
Total	$	48,824

Summary of Warranty Accrual Included in Accrued Liabilities

Activity for the Company’s warranty accrual, which is included in accrued and other current liabilities, is summarized below (in thousands):



	Three months ended						Six months ended
	June 30, 2017			July 1, 2016			June 30, 2017			July 1, 2016
Balance at beginning of period	$	4,585		$	4,966		$	4,862		$	3,913
Balance assumed from TVN acquisition	—			—			—			1,012
Accrual for current period warranties	1,277			1,716			2,495			2,975
Changes in liability related to pre-existing warranties	—			(74		)	—			(74		)
Warranty costs incurred	(1,720		)	(1,513		)	(3,215		)	(2,731		)
Balance at end of period	$	4,142		$	5,095		$	4,142		$	5,095

Recent Accounting Pronouncements - Narratives (Details) - USD ($)	Jan. 01, 2017	Mar. 31, 2017
Accounting Standards Update 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect on Retained Earnings, Net of Tax	$ 69,000
Accounting Standards Update 2016-16 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect on Retained Earnings, Net of Tax	1,400,000
Deferred Tax Assets, Net		$ 1,100,000
Deferred Tax Assets, Valuation Allowance		2,100,000
Unamortized Tax Expense, Deferred		$ 300,000
Deferred Tax Assets Gross \| Accounting Standards Update 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	4,600,000
Net Deferred Tax Asset \| Accounting Standards Update 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 0

Business Acquisition Narratives (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended	12 Months Ended
	Dec. 31, 2016	Jul. 01, 2016	Jul. 01, 2016	Dec. 31, 2016	Feb. 29, 2016
Business Acquisition [Line Items]
Business Acquisition ProForma Earnings Per Share Basic And Diluted			$ (0.52)
TVN [Member]
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired					100.00%
Business Combination, Final Purchase Price	$ 82,512
Business Combination, Acquisition and Integration Related Expenses		$ 6,500	$ 6,500	$ 16,900

Business Acquisition - Allocation of Net Tangible and Intangible Assets (Details) - USD ($)
$ in Thousands

3 Months Ended

Dec. 31, 2016

Jun. 30, 2017

Business Combination, Separately Recognized Transactions [Line Items]

Goodwill

$ 237,279

$ 240,570

TVN [Member]

Business Combination, Separately Recognized Transactions [Line Items]

Cash and cash equivalents

6,843

Accounts receivable, net

14,933

Inventories

3,462

Prepaid expenses and other current assets

2,412

Property and equipment, net

9,942

French R&D tax credit receivables (1)

^[1]

26,421

Other long-term assets

2,134

Total assets

66,147

Other debts and capital lease obligations, current

8,362

Accounts payable

12,494

Deferred revenue

2,504

Accrued and other current liabilities

18,365

Other debts and capital lease obligations, long-term

16,087

Other non-current liabilities

6,467

Deferred tax liabilities

2,126

Total liabilities

66,405

Goodwill

41,670

Intangibles

41,100

Total Purchase Consideration

$ 82,512

[1]	(1) See Note 8, “Balance Sheet Components-Prepaid expenses and other current assets” for more information on French R&D tax credit receivables.

Business Acquisition - Intangible Assets Useful Life (Details) - TVN [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Intangibles	$ 41,100
Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	6 months
Intangibles	$ 3,600
Developed Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	4 years
Intangibles	$ 21,700
Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
Intangibles	$ 15,200
Trade Name
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	4 years
Intangibles	$ 600

Business Acquisition - Acquisition and Integration Expenses (Details) - TVN [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016	Dec. 31, 2016
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs		$ 885		$ 3,321
Business Combination, Integration Related Costs	$ 467	2,518	$ 2,617	3,178
Business Combination, Acquisition and Integration Related Expenses		6,500		6,500	$ 16,900
Cost of Goods, Product Line [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs		0		0
Business Combination, Integration Related Costs	0	433	342	491
Research and Development Expense [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs		0		0
Business Combination, Integration Related Costs	0	500	7	550
Selling, General and Administrative Expenses [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs		885		3,321
Business Combination, Integration Related Costs	$ 467	$ 1,585	$ 2,268	$ 2,137

Business Acquisition - Pro Forma Disclosure (Details) $ / shares in Units, $ in Millions	6 Months Ended
	Jul. 01, 2016 USD ($) $ / shares
Business Acquisition, Pro Forma Information [Abstract]
Business Acquisition, Pro Forma Revenue	$ 200.1
Business Acquisition, Pro Forma Net Income (Loss)	$ (40.3)
Business Acquisition ProForma Earnings Per Share Basic And Diluted \| $ / shares	$ (0.52)

Short-Term Investments - Summary of Short-Term Investments (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost		$ 6,928
Gross Unrealized Gains		0
Gross Unrealized Losses		(5)
Total short-term investments, Estimated Fair Value	$ 0	6,923
Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost		6,928
Gross Unrealized Gains		0
Gross Unrealized Losses		(5)
Total short-term investments, Estimated Fair Value		$ 6,923

Short-Term Investments - Additional Information (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Short-term investments	$ 0	$ 6,923
Cost Method Investments	$ 3,800	$ 4,400

Investments in Other Equity Securities Investments in Other Equity Securities (Details) - USD ($)	3 Months Ended					6 Months Ended		12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jul. 01, 2016	Apr. 01, 2016	Jun. 30, 2017	Jul. 01, 2016	Dec. 31, 2016	Oct. 22, 2014	Sep. 02, 2014
Schedule of Cost-method Investments [Line Items]
Cost Method Investments Carrying Value	$ 3,800,000	$ 4,400,000				$ 3,800,000		$ 4,400,000
Research and development	27,055,000			$ 26,507,000		51,937,000	$ 50,070,000
Prepaid expenses and other current assets	24,318,000	26,319,000				24,318,000		26,319,000
Cost-method Investments, Other than Temporary Impairment	0			$ 0		0	$ 1,476,000
Vislink plc [Member]
Schedule of Cost-method Investments [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent										3.30%
Cost Method Investments Original Cost										$ 3,300,000
Cost Method Investments Carrying Value	200,000	$ 800,000				200,000		800,000
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax						(300,000)		$ 300,000
Cost-method Investments, Other than Temporary Impairment			$ 1,200,000		$ 1,500,000
Stock Price Increase, Percentage		67.00%
Pebble Beach Systems [Member]
Schedule of Cost-method Investments [Line Items]
Cost Method Investments Carrying Value	200,000					200,000
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax	(100,000)
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	$ 500,000					500,000
Stock Price Decrease, Percentage	83.00%
Variable Interest Entity, Not Primary Beneficiary [Member] \| EDC [Member]
Schedule of Cost-method Investments [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent									18.40%
Cost Method Investments Original Cost									$ 3,500,000
Cost-method Investments, Other than Temporary Impairment						0
Cost-method Investments [Member] \| Variable Interest Entity, Not Primary Beneficiary [Member] \| EDC [Member]
Schedule of Cost-method Investments [Line Items]
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	$ 3,600,000					3,600,000
Other Expense [Member] \| Variable Interest Entity, Not Primary Beneficiary [Member] \| EDC [Member]
Schedule of Cost-method Investments [Line Items]
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	$ 100,000					$ 100,000

Derivatives and Hedging Activities - Additional Information (Details) $ in Millions	6 Months Ended
	Jun. 30, 2017 USD ($)
Not Designated as Hedging Instrument [Member] \| Forward Contracts [Member]
Derivative [Line Items]
Derivative, Term of Contract	3 months
Israel [Member]
Derivative [Line Items]
Compensating Balance, Amount	$ 2.5

Derivative and Hedging Activities gain losses in Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Derivatives, Fair Value [Line Items]
Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion	$ 0	$ (22)	$ 0	$ (100)
Other Comprehensive Income (Loss) [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments, Gain Recognized in Other Comprehensive Income (Loss), Effective Portion	0		0	158
Derivative Instruments, Loss Recognized in Other Comprehensive Income (Loss), Effective Portion		(165)
Cost of Sales [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion	0	(3)	0	(13)
Operating Expense [Member]
Derivatives, Fair Value [Line Items]
Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion	0	(19)	0	(87)
Other Nonoperating Income (Expense) [Member]
Derivatives, Fair Value [Line Items]
Losses recognized in income on derivatives (ineffectiveness portion and amount excluded from effectiveness testing)	0	(22)	0	(49)
Other Nonoperating Income (Expense) [Member] \| Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Gains (losses) recognized in income	$ (53)	$ (50)	$ (185)	$ (334)

Derivatives and Hedging Activities Notional Amounts (Details) - Foreign Exchange Forward [Member] - Not Designated as Hedging Instrument [Member] - Fair Value Hedging [Member] - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Long [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Notional Amount	$ 9,911	$ 4,056
Short [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Liability, Notional Amount	$ 5,970	$ 11,157

Derivatives and Hedging Activities Assets Liabilities Balance Sheet Location (Details) - Foreign Exchange Contract [Member] - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Derivative Asset, Current	$ 118	$ 54
Derivative Liability, Current	64	40
Not Designated as Hedging Instrument [Member] \| Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Current	118	54
Not Designated as Hedging Instrument [Member] \| Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Current	$ 64	$ 40

- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References + Details

Derivatives and Hedging Activities Asset and Liability Offset (Details) $ in Thousands	Jun. 30, 2017 USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Asset, Gross Amounts of Derivatives	$ 118
Derivative Assets, Gross Amounts of Derivatives Offset in the Condensed Consolidated Balance Sheets	0
Net Amounts of Derivatives Assets Presented in the Condensed Consolidated Balance Sheets	118
Derivative Assets, Gross Amounts of Derivatives Not Offset in the Condensed Consolidated Balance Sheets, Financial Instrument	(11)
Derivative Assets, Gross Amounts of Derivatives Not Offset in the Condensed Consolidated Balance Sheets,Cash Collateral Pledged	0
Derivative Assets, Net Amount	107
Derivative Liabilities, Gross Amounts of Derivatives	64
Derivative Liabilities, Gross Amounts of Derivatives Offset in the Condensed Consolidated Balance Sheets	0
Net Amounts of Derivatives Liability Presented in the Condensed Consolidated Balance Sheets	64
Derivative Liabilities, Gross Amounts of Derivatives Not Offset in the Condensed Consolidated Balance Sheets, Financial Instrument	(11)
Derivative Liabilities, Gross Amounts of Derivatives Not Offset in the Condensed Consolidated Balance Sheets, Cash Collateral Pledged	0
Derivative Liabilities, Net Amount	$ 53

Fair Value Measurements - Narratives (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt and Capital Lease Obligations	$ 16,422	$ 21,190
Defined Benefit Plan, Benefit Obligation	4,779	4,300
Assets, Fair Value Disclosure, Nonrecurring	0
Liabilities, Fair Value Disclosure, Nonrecurring	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Convertible Debt, Fair Value Disclosures	147,900	$ 143,500
Debt and Capital Lease Obligations	$ 16,400

Balance Sheet Components - Accounts Receivable, Net, Prepaid Expenses and Other Current Assets, Inventories, Property and Equipment, Net (Detail) - USD ($)
$ in Thousands

Jun. 30, 2017

Dec. 31, 2016

Accounts receivable, net:

Accounts receivable

$ 66,892

$ 91,596

Less: allowances for doubtful accounts, returns and discounts

(6,465)

(4,831)

Total

60,427

86,765

Prepaid expenses and other current assets:

Deferred cost of revenue

5,615

6,856

French R&D tax credits receivable(1)

^[1]

6,277

5,895

Prepaid maintenance, royalty, rent, property taxes and value added tax

6,574

5,526

Prepaid customer incentive(2)

^[2]

746

1,162

Restricted cash(3)

^[3]

802

731

Other

4,304

6,149

Prepaid Expense and Other Assets, Current

24,318

26,319

Inventories:

Raw materials

9,179

9,889

Work-in-process

1,789

2,318

Finished goods

11,643

17,776

Service-related spares

12,519

11,210

Total inventories, net

35,130

41,193

Property, Plant and Equipment [Line Items]

Property, Plant and Equipment, Gross

140,666

155,956

Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment

(109,042)

(123,792)

Property, Plant and Equipment, Net

31,624

32,164

Accrued Liabilities, Current [Abstract]

Accrued employee compensation and related expenses

17,671

19,377

Accrued TVN VDP, current (1)

3,915

6,597

Accrued warranty

4,142

4,862

Customer deposits

3,848

4,537

Contingent inventory reserves

3,671

2,210

Accrued royalty payments

2,797

1,912

Others

14,228

15,655

Accrued Liabilities, Current

50,272

55,150

Machinery and Equipment [Member]

Property, Plant and Equipment [Line Items]

Property, Plant and Equipment, Gross

86,841

97,989

Capitalized software [Member]

Property, Plant and Equipment [Line Items]

Property, Plant and Equipment, Gross

32,639

34,519

Leasehold Improvements [Member]

Property, Plant and Equipment [Line Items]

Property, Plant and Equipment, Gross

14,406

14,455

Furniture and Fixtures [Member]

Property, Plant and Equipment [Line Items]

Property, Plant and Equipment, Gross

$ 6,780

$ 8,993

[1]	The Company’s acquired TVN subsidiary in France (the “TVN French Subsidiary”) participates in the French Crédit d’Impôt Recherche (“CIR”) program (the “R&D tax credits”) which allows companies to monetize eligible research expenses. The R&D tax credits can be used to offset against income tax payable to the French government in each of the four years after being incurred, or if not utilized, are recoverable in cash. The amount of R&D tax credits recoverable are subject to audit by the French government. The R&D tax credit receivables at June 30, 2017 were approximately $24.3 million and are expected to be recoverable from 2018 through 2021 with $6.3 million reported under “Prepaid and other Current Assets” and $18.0 million reported under “Other Long-term Assets” on the Company’s Condensed Consolidated Balance Sheets.
[2]	On September 26, 2016, the Company issued a warrant to purchase shares of its common stock (the “Warrant”) to Comcast pursuant to which Comcast may, subject to certain vesting provisions, purchase up to 7,816,162 shares of the Company’s common stock subject to adjustment in accordance with the terms of the Warrant, for a per share exercise price of $4.76. The portion of the Warrant which vested on September 26, 2016 had a value of approximately $1.6 million and is deemed a customer incentive paid upfront and cumulatively, $0.9 million of this prepaid incentive has been recorded as a reduction to the Company’s net revenues from Comcast. The remaining $0.7 million of this prepaid incentive is reported as an asset under “Prepaid expenses and other current assets” on the Company’s Condensed Consolidated Balance Sheet as of June 30, 2017. The Company considers this asset to be recoverable based on the expectation of Comcast’s future purchases of the pertinent products.
[3]	The restricted cash balances are held as cash collateral security for certain bank guarantees. These restricted funds are invested in bank deposits and cannot be withdrawn from the Company’s accounts without the prior written consent of the applicable secured party. Additionally, as of June 30, 2017, the Company recorded approximately $1.1 million of restricted cash for the bank guarantee associated with the TVN French Subsidiary’s office building lease. This amount is reported under “Other Long-term Assets” on the Company’s Condensed Consolidated Balance Sheets. June 30, 2017December 31, 2016Inventories: Raw materials$9,179 $9,889Work-in-process1,789 2,318Finished goods11,643 17,776Service-related spares12,519 11,210Total$35,130 $41,193

Balance Sheet Components Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands

Jun. 30, 2017

Dec. 31, 2016

Sep. 26, 2016

Business Acquisition, Contingent Consideration [Line Items]

Income Taxes Receivable, Current

^[1]

$ 6,277

$ 5,895

Class of Warrant or Right, Number of Securities Called by Warrants or Rights

7,816,162

Class of Warrant or Right, Exercise Price of Warrants or Rights

$ 4.76

Prepaid Expenses and Other Current Assets [Member]

Business Acquisition, Contingent Consideration [Line Items]

Prepaid Warrants Incentive

700

Property Lease Guarantee [Member] | Other Noncurrent Assets [Member] | TVN [Member]

Business Acquisition, Contingent Consideration [Line Items]

Restricted Cash and Cash Equivalents

1,100

Research Tax Credit Carryforward [Member] | TVN [Member]

Business Acquisition, Contingent Consideration [Line Items]

Income Taxes Receivable, Noncurrent

^[2]

24,300

Research Tax Credit Carryforward [Member] | Prepaid Expenses and Other Current Assets [Member] | TVN [Member]

Business Acquisition, Contingent Consideration [Line Items]

Income Taxes Receivable, Current

^[2]

6,300

Research Tax Credit Carryforward [Member] | Other Noncurrent Assets [Member] | TVN [Member]

Business Acquisition, Contingent Consideration [Line Items]

Income Taxes Receivable, Current

^[2]

18,000

Comcast Product Supply Agreement [Member]

Business Acquisition, Contingent Consideration [Line Items]

Warrants and Rights Outstanding

1,600

$ 1,600

Sales Revenue, Goods, Net [Member] | Comcast Product Supply Agreement [Member]

Business Acquisition, Contingent Consideration [Line Items]

Warrants and Rights Outstanding

$ 900

[1]

The Company’s acquired TVN subsidiary in France (the “TVN French Subsidiary”) participates in the French Crédit d’Impôt Recherche (“CIR”) program (the “R&D tax credits”) which allows companies to monetize eligible research expenses. The R&D tax credits can be used to offset against income tax payable to the French government in each of the four years after being incurred, or if not utilized, are recoverable in cash. The amount of R&D tax credits recoverable are subject to audit by the French government. The R&D tax credit receivables at June 30, 2017 were approximately $24.3 million and are expected to be recoverable from 2018 through 2021 with $6.3 million reported under “Prepaid and other Current Assets” and $18.0 million reported under “Other Long-term Assets” on the Company’s Condensed Consolidated Balance Sheets.

[2]

On September 26, 2016, the Company issued a warrant to purchase shares of its common stock (the “Warrant”) to Comcast pursuant to which Comcast may, subject to certain vesting provisions, purchase up to 7,816,162 shares of the Company’s common stock subject to adjustment in accordance with the terms of the Warrant, for a per share exercise price of $4.76. The portion of the Warrant which vested on September 26, 2016 had a value of approximately $1.6 million and is deemed a customer incentive paid upfront and cumulatively, $0.9 million of this prepaid incentive has been recorded as a reduction to the Company’s net revenues from Comcast. The remaining $0.7 million of this prepaid incentive is reported as an asset under “Prepaid expenses and other current assets” on the Company’s Condensed Consolidated Balance Sheet as of June 30, 2017. The Company considers this asset to be recoverable based on the expectation of Comcast’s future purchases of the pertinent products.

Goodwill and Intangible Assets - Narratives (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($) ReportingUnit	Jul. 01, 2016 USD ($)	Dec. 31, 2016 USD ($)	Oct. 31, 2016
Goodwill [Line Items]
Number of Reporting Units \| ReportingUnit	2
Goodwill	$ 240,570		$ 237,279
Goodwill, Impairment Loss	0	$ 0
Video [Member]
Goodwill [Line Items]
Goodwill	179,780		176,519
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount				67.00%
Cable Edge [Member]
Goodwill [Line Items]
Goodwill	$ 60,790		60,760
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount				123.00%
TVN [Member]
Goodwill [Line Items]
Goodwill			$ 41,670

Goodwill and Identified Intangible Assets - Changes in Carrying Amount of Goodwill (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($)
Goodwill [Line Items]
Balance at beginning of period	$ 237,279
Foreign currency translation adjustment	3,291
Balance at end of period	240,570
Video [Member]
Goodwill [Line Items]
Balance at beginning of period	176,519
Foreign currency translation adjustment	3,261
Balance at end of period	179,780
Cable Edge [Member]
Goodwill [Line Items]
Balance at beginning of period	60,760
Foreign currency translation adjustment	30
Balance at end of period	$ 60,790

Goodwill and Identified Intangible Assets - Summary of Goodwill and Identified Intangible Assets (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 85,483	$ 85,175
Accumulated Amortization	(60,166)	(55,944)
Total future amortization expense	$ 25,317	29,231
Developed Technology
Finite-Lived Intangible Assets [Line Items]
Useful Life	2 years 8 months 4 days
Gross Carrying Amount	$ 31,708	31,707
Accumulated Amortization	(17,807)	(15,216)
Total future amortization expense	$ 13,901	16,491
Customer relationships/contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life	3 years 8 months 4 days
Gross Carrying Amount	$ 44,643	44,384
Accumulated Amortization	(33,641)	(32,098)
Total future amortization expense	$ 11,002	12,286
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Useful Life	2 years 8 months 4 days
Gross Carrying Amount	$ 621	573
Accumulated Amortization	(207)	(119)
Total future amortization expense	414	454
Maintenance agreements and related relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,500	5,500
Accumulated Amortization	(5,500)	(5,500)
Total future amortization expense	0	0
Backlog
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,011	3,011
Accumulated Amortization	(3,011)	(3,011)
Total future amortization expense	$ 0	$ 0

Goodwill and Identified Intangible Assets - Amortization Expense for Identifiable Purchased Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Included in cost of revenue	$ 1,295	$ 1,307	$ 2,590	$ 1,725
Included in operating expenses	780	4,232	1,554	6,597
Total amortization expense	$ 2,075	$ 5,539	$ 4,144	$ 8,322

Goodwill and Identified Intangible Assets - Estimated Future Amortization Expense of Purchased Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
2017 (remaining six months)	$ 4,168
2018	8,336
2019	8,336
2020	3,977
2021	500
Total future amortization expense	25,317	$ 29,231
Cost of Sales [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
2017 (remaining six months)	2,590
2018	5,180
2019	5,180
2020	951
2021	0
Total future amortization expense	13,901
Operating Expense [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
2017 (remaining six months)	1,578
2018	3,156
2019	3,156
2020	3,026
2021	500
Total future amortization expense	$ 11,416

Restructuring and Related Charges Restructuring and Related Charges, COS & OPEX (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Restructuring and Related Activities [Abstract]
Production Related Impairments or Charges	$ 278	$ 6	$ 786
Production Related Impairment Cost Recovery				$ (23)
Restructuring Charges	777	1,903	2,056	4,515
Restructuring and Related Cost, Incurred Cost	$ 1,055	$ 1,909	$ 2,842	$ 4,492

Restructuring and Related Charges - Additional Information (Detail)
$ in Thousands

1 Months Ended

3 Months Ended

6 Months Ended

12 Months Ended

18 Months Ended

Jan. 31, 2016

USD ($)

Jun. 30, 2017

USD ($)

Dec. 31, 2016

USD ($)

Employees

Jul. 01, 2016

USD ($)

Jun. 30, 2017

USD ($)

Employee

Jul. 01, 2016

USD ($)

Dec. 31, 2016

USD ($)

Employees

Jun. 30, 2017

USD ($)

Jan. 04, 2016

USD ($)

Restructuring Cost and Reserve [Line Items]

Restructuring and Related Cost, Incurred Cost

$ 1,055

$ 1,909

$ 2,842

$ 4,492

Adjustments to restructuring provisions

777

1,903

2,056

4,515

Harmonic 2016 Restructuring Plan [Member]

Restructuring Cost and Reserve [Line Items]

Restructuring and Related Cost, Incurred Cost

$ 20,000

Charges for 2016 Harmonic Restructuring Plan

2,798

Adjustments to restructuring provisions

Facility Closing [Member] | Harmonic 2016 Restructuring Plan [Member]

Restructuring Cost and Reserve [Line Items]

Restructuring and Related Cost, Incurred Cost

2,200

Charges for 2016 Harmonic Restructuring Plan

Adjustments to restructuring provisions

Employee Severance And Benefit Arrangements [Member] | Harmonic 2016 Restructuring Plan [Member]

Restructuring Cost and Reserve [Line Items]

Restructuring and Related Cost, Incurred Cost

$ 17,800

Number of positions eliminated | Employees

118

Employee Severance [Member] | Harmonic 2016 Restructuring Plan [Member]

Restructuring Cost and Reserve [Line Items]

Charges for 2016 Harmonic Restructuring Plan

^[1]

973

Adjustments to restructuring provisions

^[1]

TVN Voluntary Departure Plan [Member] | Harmonic 2016 Restructuring Plan [Member]

Restructuring Cost and Reserve [Line Items]

Charges for 2016 Harmonic Restructuring Plan

^[2]

1,777

Adjustments to restructuring provisions

^[2]

TVN [Member]

Restructuring Cost and Reserve [Line Items]

Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments

$ 2,000

Business Combination, Acquisition and Integration Related Expenses

6,500

16,900

Business Combination, Integration Related Costs

467

$ 2,518

$ 2,617

$ 3,178

Number of employees applied for VDP | Employees

Voluntary Departure Plan Anticipated Cost

$ 15,300

Voluntary Departure Plan Benefit Obligation Term

4 years

Number of employees required to work beyond minimum statutory notice period under VDP | Employees

Accrued Voluntary Departure Plan, Current

$ 14,800

TVN [Member] | Employee Severance And Benefit Arrangements [Member] | Harmonic 2016 Restructuring Plan [Member]

Restructuring Cost and Reserve [Line Items]

Number of positions eliminated

TVN [Member] | Employee Severance [Member] | Harmonic 2016 Restructuring Plan [Member]

Restructuring Cost and Reserve [Line Items]

Postemployment Benefits, Period Expense

700

$ 1,800

Charges for 2016 Harmonic Restructuring Plan

400

1,000

TVN [Member] | TVN Voluntary Departure Plan [Member]

Restructuring Cost and Reserve [Line Items]

Charges for 2016 Harmonic Restructuring Plan

1,800

$ 13,100

Defined Benefit Plan, Benefits Paid

4,900

$ 3,500

$ 8,400

Postemployment Benefits Liability

$ 7,200

San Jose CA Excess Facility [Member] | Facility Closing [Member] | Harmonic 2016 Restructuring Plan [Member]

Restructuring Cost and Reserve [Line Items]

Charges for 2016 Harmonic Restructuring Plan

$ 1,400

Fair Value of Excess Facility Restructuring

$ 2,500

Deferred Rent Credit

$ 1,100

Adjustments to restructuring provisions

$ 600

[1]	The Company anticipates that the remaining severance and benefits accrual at June 30, 2017 will be fully paid in 2017.
[2]	See discussion of the TVN VDP above for future estimated payments through 2020.

Restructuring and Related Charges Restructuring and Related Charges - Estimated Future Payments (Details) - TVN [Member] - TVN Voluntary Departure Plan [Member] - Harmonic 2016 Restructuring Plan [Member] $ in Thousands	Jun. 30, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
2017 (remaining six months)	$ 2,349
2018	3,302
2019	1,651
2020	783
Total	$ 8,085

Restructuring and Related Charges - Activities in Restructuring Accrual (Detail) - USD ($)
$ in Thousands

3 Months Ended

6 Months Ended

Jun. 30, 2017

Jul. 01, 2016

Jun. 30, 2017

Jul. 01, 2016

Restructuring Reserve [Roll Forward]

Adjustments to restructuring provisions

$ 777

$ 1,903

$ 2,056

$ 4,515

Harmonic 2016 Restructuring Plan [Member]

Restructuring Reserve [Roll Forward]

Beginning Balance

13,544

Restructuring charges

2,798

Adjustments to restructuring provisions

Cash payments

(7,605)

Foreign exchange gain (loss)

628

Ending Balance

9,409

Restructuring Reserve, Current

^[1]

(5,269)

Restructuring Reserve, Noncurrent

^[1]

4,140

Harmonic 2016 Restructuring Plan [Member] | Facility Closing [Member]

Restructuring Reserve [Roll Forward]

Beginning Balance

2,375

Restructuring charges

Adjustments to restructuring provisions

Cash payments

(676)

Ending Balance

1,747

Restructuring Reserve, Current

^[1]

(854)

Restructuring Reserve, Noncurrent

^[1]

893

Harmonic 2016 Restructuring Plan [Member] | TVN Voluntary Departure Plan [Member]

Restructuring Reserve [Roll Forward]

Beginning Balance

^[2]

9,650

Restructuring charges

^[2]

1,777

Adjustments to restructuring provisions

^[2]

Cash payments

^[2]

(4,862)

Foreign exchange gain (loss)

^[2]

597

Ending Balance

^[2]

7,162

Restructuring Reserve, Current

^[1],[2]

(3,915)

Restructuring Reserve, Noncurrent

^[1],[2]

3,247

Harmonic 2016 Restructuring Plan [Member] | Employee Severance [Member]

Restructuring Reserve [Roll Forward]

Beginning Balance

^[3]

1,519

Restructuring charges

^[3]

973

Adjustments to restructuring provisions

^[3]

Cash payments

^[3]

(2,067)

Foreign exchange gain (loss)

^[3]

Ending Balance

^[3]

500

Restructuring Reserve, Current

^[1],[3]

(500)

Restructuring Reserve, Noncurrent

^[1],[3]

$ 0

[1]	The current portion and long-term portion of the restructuring liability are reported under “Accrued and other current liabilities” and “Other non-current liabilities”, respectively, on the Company’s Condensed Consolidated Balance Sheets.
[2]	See discussion of the TVN VDP above for future estimated payments through 2020.
[3]	The Company anticipates that the remaining severance and benefits accrual at June 30, 2017 will be fully paid in 2017.

Convertible Notes, Other Debts And Capital Leases - Additional Information (Detail)
$ / shares in Units, shares in Millions

3 Months Ended

12 Months Ended

Dec. 14, 2015

Jun. 30, 2017

USD ($)

$ / shares

Dec. 31, 2015

USD ($)

day

$ / shares

Dec. 31, 2016

USD ($)

Debt Instrument [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

4.00%

Debt Instrument, Face Amount

$ 128,250,000

Debt Instrument, Convertible, Conversion Ratio

173.9978

Debt Conversion, Converted Instrument, Amount

$ 1,000

Debt Instrument, Convertible, Conversion Price | $ / shares

$ 5.75

Debt Issuance Cost, Gross, Noncurrent

$ 4,100,000

Percentage Of Principal Amount Of Convertible Notes Is Equal To Repurchase Price

100.00%

Debt Instrument Convertible Allocated Amount of Equity Component

$ 26,925,000

26,925,000

Debt Instrument, Unamortized Discount (Premium), Net

4,100,000

Unamortized Debt Issuance Expense

2,401,000

3,223,000

2,689,000

Debt Instrument Convertible Equity Component Issuance Cost

863,000

$ 863,000

863,000

Financing from French government agencies related to various government incentive programs (1)

^[1]

13,597,000

17,930,000

Term loans (2)

^[2]

1,369,000

1,400,000

Stock price greater or equal 130 percent of Note Conversion Price [Member]

Debt Instrument [Line Items]

Debt Instrument, Convertible, Threshold Trading Days | day

Debt Instrument, Convertible, Threshold Consecutive Trading Days

30 days

Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger

130.00%

Note price less than 98 percent of stock price times conversion rate [Member]

Debt Instrument [Line Items]

Debt Instrument, Convertible, Threshold Trading Days | day

Debt Instrument, Convertible, Threshold Consecutive Trading Days

5 days

Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger

98.00%

Privately Negotiated Transactions [Member]

Debt Instrument [Line Items]

Proceeds from Convertible Debt

$ 49,900,000

Stock Repurchased and Retired During Period, Shares | shares

11.1

TVN [Member]

Debt Instrument [Line Items]

Proceeds from Convertible Debt

$ 74,200,000

Income Taxes Receivable

$ 24,300,000

Loans Backed By French Research And Development Tax Credit Receivables [Member] | TVN [Member]

Debt Instrument [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

0.60%

Financing from French government agencies related to various government incentive programs (1)

^[1]

$ 10,800,000

Adjusted EURIBOR Rate, Term

1 month

Debt Instrument, Basis Spread on Variable Rate

1.30%

Loans From French Government For R&D Innovation Projects [Member]

Debt Instrument [Line Items]

Financing from French government agencies related to various government incentive programs (1)

^[1]

$ 2,800,000

Foreign Line of Credit [Member] | BPI France [Member]

Debt Instrument [Line Items]

Line of Credit Facility, Fair Value of Amount Outstanding

Other Current Liabilities [Member] | TVN [Member]

Debt Instrument [Line Items]

Term loans (2)

$ 400,000

[1]

As of June 30, 2017, the Company’s TVN French Subsidiary had an aggregate of $13.6 million of loans due to various financing programs of French government agencies, $10.8 million of which are related to loans backed by R&D tax credit receivables. As of June 30, 2017, the TVN French Subsidiary had an aggregate of $24.3 million of R&D tax credit receivables from the French government from 2018 through 2021. (See Note 8, “Balance Sheet Components-Prepaid expenses and other current assets,” for more information). These tax loans have a fixed rate of 0.6%, plus EURIBOR 1 month + 1.3% and mature between 2018 through 2019. The remaining loans of $2.8 million at June 30, 2017 primarily relate to financial support from French government agencies for R&D innovation projects at minimal interest rates and these loans mature between 2020 through 2023.

[2]

One of the term loans with a certain financial institution contains annual covenants that require the TVN French Subsidiary to maintain a minimum working capital balance and various other financial covenants and restrictions that limit the French Subsidiary’s ability to incur additional indebtedness. The annual covenant is based on French statutory year-end results and the TVN French Subsidiary failed the 2016 covenant test primarily due to the Company’s plan to integrate TVN’s operations into other subsidiaries for tax planning and logistics purposes. In early 2017, the Company informed the financial institution of the 2016 covenant test results and was told by the financial institution to continue with the original payment schedule. The Company reported the entire loan balance with this financial institution under “Other debts and capital lease obligations, current” in the Condensed Consolidated Balance Sheets. The loan balance was approximately $0.4 million at both June 30, 2017 and December 31, 2016.

Convertible Notes, Other Debts And Capital Leases - Convertible Note Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Principal amount	$ 128,250	$ 128,250	$ 128,250
Less: Debt discount, net of amortization	(19,914)	(22,302)
Less: Debt issuance costs, net of amortization	(2,401)	(2,689)	(3,223)
Carrying amount	$ 105,935	$ 103,259
Remaining amortization period (years)	3 years 5 months 3 days	3 years 10 months 28 days
Effective interest rate on liability component	9.94%	9.94%
Value of conversion option	$ 26,925	$ 26,925	26,925
Less: Equity issuance costs	(863)	(863)	$ (863)
Carrying amount	$ 26,062	$ 26,062

Convertible Notes, Other Debts And Capital Leases - Interest (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Debt Disclosure [Abstract]
Contractual interest expense	$ 1,282	$ 1,282	$ 2,565	$ 2,565
Amortization of debt discount	1,214	1,098	2,388	2,157
Amortization of debt issuance costs	146	132	288	260
Total interest expense recognized	$ 2,642	$ 2,512	$ 5,241	$ 4,982

Convertible Notes , Other Debts And Capital Leases - Other Debt and Capital Lease Obligations (Details) - USD ($)
$ in Thousands

Jun. 30, 2017

Dec. 31, 2016

Debt Instrument [Line Items]

Financing from French government agencies related to various government incentive programs (1)

^[1]

$ 13,597

$ 17,930

Term loans (2)

^[2]

1,369

1,400

Obligations under capital leases

1,456

1,860

Total debt obligations

16,422

21,190

Less: current portion

(7,130)

(7,275)

Long-term portion

$ 9,292

$ 13,915

[1]

[2]

Convertible Notes, Other Debts And Capital Leases - Debt Maturities (Details) $ in Thousands	Jun. 30, 2017 USD ($)
Debt Disclosure [Abstract]
Capital Leases, Future Minimum Payments, Remainder of Fiscal Year	$ 492
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year	673
Capital Leases, Future Minimum Payments Due in Two Years	868
Long-term Debt, Maturities, Repayments of Principal in Year Two	5,873
Capital Leases, Future Minimum Payments Due in Three Years	69
Long-term Debt, Maturities, Repayments of Principal in Year Three	6,782
Capital Leases, Future Minimum Payments Due in Four Years	27
Long-term Debt, Maturities, Repayments of Principal in Year Four	601
Capital Leases, Future Minimum Payments Due in Five Years	0
Long-term Debt, Maturities, Repayments of Principal in Year Five	489
Capital Leases, Future Minimum Payments Due Thereafter	0
Long-term Debt, Maturities, Repayments of Principal after Year Five	548
Capital Leases, Future Minimum Payments Due	1,456
Long-term Debt	$ 14,966

Employee Benefit Plans and Stock-based Compensation - Summary of Company's Stock Option and Restricted Stock Unit Activity (Detail) shares in Thousands	6 Months Ended
	Jun. 30, 2017 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Available for Grant, Beginning balance	3,912
Shares Available for Grant, Authorized	7,400
Shares Available for Grant, Granted	(4,008)
Shares Available for Grant, Forfeited or cancelled	1,584
Shares Available for Grant, Ending balance	8,888
Restricted Stock Units Outstanding [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Units, Beginning balance	3,864
Shares Available for Grant, Authorized	0
Number of Units, Granted	2,651
Number of Units, exercised	0
Number of Units, Shares released	(1,883)
Number of Units, Forfeited or cancelled	(744)
Number of Units, Ending balance	3,888
Weighted Average Grant Date Fair Value, Beginning balance \| $ / shares	$ 4.26
Weighted Average Grant Date Fair Value, Authorized \| $ / shares	0.00
Estimated weighted average fair value per share at purchase date \| $ / shares	5.46
Weighted Average Grant Date Fair Value, Exercised \| $ / shares
Weighted Average Grant Date Fair Value, Shares released \| $ / shares	3.92
Weighted Average Grant Date Fair Value, Forfeited or cancelled \| $ / shares	4.96
Weighted Average Grant Date Fair Value, Ending balance \| $ / shares	$ 5.11
Stock Options Outstanding [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Available for Grant, Authorized	0
Number of Shares, Beginning balance	5,019
Number of Shares, Granted	30
Number of Shares, Options exercised	(94)
Number of Shares, Forfeited or cancelled	(469)
Number of Shares, Ending balance	4,486
Weighted Average Exercise Price, Beginning balance \| $ / shares	$ 6.01
Weighted Average Exercise Price, Authorized \| $ / shares	0.00
Weighted Average Exercise Price, Granted \| $ / shares	5.10
Weighted Average Exercise Price, Options exercised \| $ / shares	3.06
Weighted Average Exercise Price, Forfeited or cancelled \| $ / shares	6.13
Weighted Average Exercise Price, Ending balance \| $ / shares	$ 6.06

Employee Benefit Plans and Stock-based Compensation - Additional Information (Detail) - USD ($)		1 Months Ended		2 Months Ended	3 Months Ended		6 Months Ended
	Jan. 01, 2017	Mar. 31, 2017	Aug. 31, 2016	Apr. 30, 2017	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increased Number of Common Shares Reserved for Issuance							7,400,000
Intrinsic value of options exercised					$ 24,000		$ 200,000
Defined Benefit Plan, Benefit Obligation					4,779,000		4,779,000		$ 4,300,000
Defined Benefit Pension Plan Liabilities, Current					45,000		45,000
Defined Benefit Pension Plan, Liabilities, Noncurrent					4,734,000		$ 4,734,000
Discretionary contributions of plan							25.00%
Percent of employees' gross pay eligible for matching							4.00%
Maximum contribution amount per participant							$ 1,000
Contributions in period							285,000	$ 241,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized					16,500,000		$ 16,500,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition							1 year 7 months 17 days
Total stock-based compensation					$ 4,136,000	$ 2,768,000	$ 7,387,000	$ 5,862,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Volatility					43.00%	36.00%	43.00%	36.00%
Risk-free interest rate					1.70%	1.10%	1.70%	1.40%
Expected dividends					0.00%	0.00%	0.00%	0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value					$ 1.85	$ 1.07	$ 1.85	$ 0.97
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value					$ 400,000	$ 400,000	$ 1,100,000	$ 1,400,000
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options					0	0	$ 0	0
Performance-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			898,533	582,806
Market-based awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period							344,500
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period							3 years
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized					900,000		$ 900,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition							8 months 16 days
Volatility		46.70%
Risk-free interest rate		1.57%
Expected dividends		0.00%
Total stock-based compensation					368,000		$ 415,000
RSUs and PRSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value					$ 800,000	$ 500,000	$ 7,400,000	$ 7,100,000
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance					1,693,295		1,693,295
Discount Percentage On Purchase Of Stock							15.00%
Percentage of fair market value of Common Stock to purchase shares							85.00%
Value Of Stock Purchase Right Percentage Of Put Option							15.00%
Minimum [Member] \| Performance-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period				3 months
Maximum [Member] \| Performance-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period				6 months
TVN [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pension and Other Postretirement Benefit Contributions					$ 0
Stock Plan 1995 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increased Number of Common Shares Reserved for Issuance					7,000,000
Stock Plan 1995 [Member] \| Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increased Number of Common Shares Reserved for Issuance					1,500,000
Director Option Plans 2002 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increased Number of Common Shares Reserved for Issuance					400,000
Accounting Standards Update 2016-09 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Granted, Value, Share-based Compensation, Forfeited	$ 69,000

Employee Benefit Plans and Stock-based Compensation - Summary of Stock Options Outstanding (Detail) - Stock Options Outstanding [Member] $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Vested and expected to vest \| shares	4,389
Weighted Average Exercise Price, Vested and expected to vest \| $ / shares	$ 6.08
Weighted Average Remaining Contractual Term (Years), Vested and expected to vest	3 years 2 months 1 day
Aggregate Intrinsic Value, Vested and expected to vest \| $	$ 2,045
Number of Shares, Exercisable \| shares	3,497
Weighted Average Exercise Price, Exercisable \| $ / shares	$ 6.33
Weighted Average Remaining Contractual Term (Years), Exercisable	2 years 8 months 5 days
Aggregate Intrinsic Value, Exercisable \| $	$ 1,079

Employee Benefit Plans and Stock-based Compensation - Summary of Restricted Stock Units Outstanding (Detail) - Restricted Stock Units Outstanding [Member] shares in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares Underlying Restricted Stock Units \| shares	2,893
Weighted Average Remaining Vesting Period (Years)	10 months 20 days
Aggregate Fair Value \| $	$ 15,190

Employee Benefit Plans and Stock-based Compensation - Summary of Projected Benefit Obligation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Employee Benefits and Share-based Compensation [Abstract]
Service cost	$ 55	$ 71	$ 110	$ 94
Interest cost	16	29	32	39
Recognized net actuarial loss	2	0	3	0
Net periodic benefit cost included in operating loss	$ 73	$ 100	$ 145	$ 133

Employee Benefit Plans and Stock-based compensation - Stock-based Compensation in Opex (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation	$ 4,136	$ 2,768	$ 7,387	$ 5,862
Cost of Sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation	700	424	1,145	651
Research and Development Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation	1,337	841	2,314	1,810
Selling, General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation	2,099	1,503	3,928	3,401
Operating Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation	$ 3,436	$ 2,344	$ 6,242	$ 5,211

Employee Benefit Plans and Stock-based Compensation - Valuation Assumptions for Stock Options (Details) - Stock Options [Member]	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (years)	4 years 3 months 18 days	4 years 3 months 18 days	4 years 3 months 18 days	4 years 3 months 18 days
Volatility	43.00%	36.00%	43.00%	36.00%
Risk-free interest rate	1.70%	1.10%	1.70%	1.40%
Expected dividends	0.00%	0.00%	0.00%	0.00%

Employee Benefit Plans and Stock-based Compensation - Summary of Stock Awards Valuation Assumptions (Details) - Employee Stock Purchase Plan - $ / shares	6 Months Ended
	Jul. 03, 2017	Jun. 30, 2016
Purchase Period June 30, 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (years)		6 months 1 day
Volatility		54.00%
Risk-free interest rate		0.40%
Expected dividends		0.00%
Estimated weighted average fair value per share at purchase date		$ 1.19
Scenario, Forecast [Member] \| Purchase Period July 3, 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (years)	5 months 27 days
Volatility	41.00%
Risk-free interest rate	1.00%
Expected dividends	0.00%
Estimated weighted average fair value per share at purchase date	$ 1.40

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Income Tax Disclosure [Abstract]
Loss before income taxes	$ (30,921)	$ (20,437)	$ (55,180)	$ (45,099)
Provision for income taxes	$ 579	$ 242	$ 347	$ 760
Effective income tax rate	(1.90%)	(1.20%)	(0.60%)	(1.70%)

Income Taxes - Additional Information (Detail) - USD ($)		3 Months Ended			6 Months Ended
	Jan. 01, 2017	Jun. 30, 2017	Mar. 31, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits		$ 20,000,000			$ 20,000,000
Effective income tax rate		(1.90%)		(1.20%)	(0.60%)	(1.70%)
Federal statutory income tax rate					35.00%	35.00%
One-time tax benefit from merger, Amount			$ 1,200,000
Unrecognized tax benefits that would impact the provision for income taxes		$ 3,100,000			$ 3,100,000
Interest and possible penalties related to uncertain tax positions		500,000			500,000
Decrease in Unrecognized Tax Benefits is Reasonably Possible		$ 2,400,000			$ 2,400,000
SWITZERLAND
Income Tax Contingency [Line Items]
Income Tax Holiday, Description					The Company’s operations in Switzerland are subject to a reduced tax rate under the Switzerland tax holiday which requires various thresholds of investment and employment in Switzerland. The Company has met these various thresholds and the Switzerland tax holiday is effective through the end of 2018.
Accounting Standards Update 2016-09 [Member]
Income Tax Contingency [Line Items]
Cumulative Effect on Retained Earnings, Net of Tax	$ 69,000
Accounting Standards Update 2016-09 [Member] \| Deferred Tax Assets Gross
Income Tax Contingency [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	4,600,000
Accounting Standards Update 2016-09 [Member] \| Valuation Allowance of Deferred Tax Assets [Member]
Income Tax Contingency [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	4,600,000
Accounting Standards Update 2016-09 [Member] \| Net Deferred Tax Asset
Income Tax Contingency [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	0
Accounting Standards Update 2016-16 [Member]
Income Tax Contingency [Line Items]
Cumulative Effect on Retained Earnings, Net of Tax	$ 1,400,000
Deferred Tax Assets, Net			1,100,000
Deferred Tax Assets, Valuation Allowance			2,100,000
Deferred Tax Assets, Tax Deferred Expense			$ 300,000

Income (Loss) Per Share - Numerators and Denominators of Basic and Diluted Net Income (Loss) Per Share Computations (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Numerator:
Net loss	$ (31,500)	$ (20,679)	$ (55,527)	$ (45,859)
Denominator:
Basic and diluted	80,590	77,342	80,203	77,168
Net loss per share:
Basic and diluted	$ (0.39)	$ (0.27)	$ (0.69)	$ (0.59)

Income (Loss) Per Share - Anti-dilutive Securities (Detail) - $ / shares

3 Months Ended

6 Months Ended

Jun. 30, 2017

Jul. 01, 2016

Jun. 30, 2017

Jul. 01, 2016

Dec. 31, 2015

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Potentially dilutive equity awards outstanding

9,374,000

8,327,000

8,974,000

7,853,000

Potential Common Shares Upon Notes Conversion If Only Settled In Shares

22,304,348

Debt Instrument, Convertible, Conversion Price

$ 5.75

Stock Options [Member]

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Potentially dilutive equity awards outstanding

4,614,000

5,428,000

4,753,000

5,488,000

Restricted Stock Units (RSUs)

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Potentially dilutive equity awards outstanding

3,400,000

2,247,000

3,054,000

2,010,000

Employee Stock Purchase Plan

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Potentially dilutive equity awards outstanding

578,000

652,000

385,000

355,000

Warrant [Member]

Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]

Potentially dilutive equity awards outstanding

^[1]

782,000

[1]

On September 26, 2016, in connection with the execution of a product supply agreement pursuant to which an affiliate of Comcast Corporation (together with Comcast Corporation, “Comcast”) may, in its sole discretion, purchase from the Company licenses to certain of the Company’s software products, the Company granted Comcast a warrant to purchase shares of its common stock. (See Note 15, “Warrants” for additional information).

Warrants (Details) - USD ($) $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 30, 2017	Sep. 26, 2016
Class of Warrant or Right [Line Items]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		7,816,162
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 4.76
Comcast Product Supply Agreement [Member]
Class of Warrant or Right [Line Items]
Class of Warrant or Right, Outstanding		781,617
Warrants and Rights Outstanding	$ 1.6	$ 1.6
Fair Value Assumptions, Expected Term	7 years
Fair Value Assumptions, Weighted Average Volatility Rate	42.00%
Fair Value Assumptions, Risk Free Interest Rate	1.40%
Fair Value Assumptions, Expected Dividend Rate	0.00%
Comcast Milestones Achievement [Member]
Class of Warrant or Right [Line Items]
Class of Warrant or Right, Unissued		1,954,042
Comcast Exceeding Specified Cumulative Purchase Volume [Member]
Class of Warrant or Right [Line Items]
Class of Warrant or Right, Unissued		1,172,425
Comcast Specified Tranches [Member]
Class of Warrant or Right [Line Items]
Class of Warrant or Right, Unissued		3,908,081
Sales Revenue, Goods, Net [Member] \| Comcast Product Supply Agreement [Member]
Class of Warrant or Right [Line Items]
Warrants and Rights Outstanding	$ 0.9
Prepaid Expenses and Other Current Assets [Member]
Class of Warrant or Right [Line Items]
Prepaid Warrants Incentive	$ 0.7

Stockholders' Equity - Components of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016	Dec. 31, 2016
Equity [Abstract]
Foreign currency translation adjustments	$ (2,384)		$ (2,384)		$ (7,267)
Unrealized gain on investments	(339)		(339)		276
Actuarial Loss	(279)		(279)		(279)
Accumulated Other Comprehensive Loss	(3,002)		(3,002)		$ (7,270)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax	3,994	$ (2,611)	4,883	$ (677)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax	$ (114)	$ (49)	(613)	$ 30
Other Comprehensive Income (Loss), before Reclassifications, before Tax			4,270
Other Comprehensive Income (Loss), Foreign Currency Translation Gain (Loss) Arising During Period, Tax			0
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax			(2)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent			$ (2)

Stockholders' Equity - Reclassification from AOCI to Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion	$ 0	$ (22)	$ 0	$ (100)
Cost of Sales [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion	0	(3)	0	(13)
Operating Expense [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion	$ 0	$ (19)	$ 0	$ (87)

Stockholders' Equity - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Jun. 30, 2017
Stockholders' Equity Note [Abstract]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax		$ 0
Cash Flow Hedge Contracts Outstanding	$ 0	$ 0
Stock Repurchased and Retired During Period, Value	$ 0

Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
Segment Information (Details) $ in Thousands	Jun. 30, 2017 USD ($)	Jul. 01, 2016 USD ($)	Jun. 30, 2017 USD ($) segment	Jul. 01, 2016 USD ($)	Feb. 29, 2016
Segment Reporting Information [Line Items]
Revenue, Net	$ 82,315	$ 109,571	$ 165,258	$ 191,403
Income (loss) from operations	(27,422)	(18,118)	(48,580)	(38,874)
Operating Expenses	(61,237)	(69,158)	(122,803)	(130,568)
Stock-based compensation	(4,136)	(2,768)	(7,387)	(5,862)
Amortization of intangibles	(2,075)	(5,539)	(4,144)	(8,322)
Nonoperating Income (Expense)	(3,499)	(2,319)	(6,600)	(6,225)
Loss before income taxes	(30,921)	(20,437)	$ (55,180)	(45,099)
Number of Reportable Segments \| segment			2
Video [Member]
Segment Reporting Information [Line Items]
Revenue, Net	73,379	90,588	$ 147,721	155,596
Cable Edge [Member]
Segment Reporting Information [Line Items]
Revenue, Net	8,936	18,983	17,537	35,807
Operating Segments [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations	(16,358)	20	(28,274)	(9,180)
Operating Segments [Member] \| Video [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations	(8,947)	518	(14,783)	(6,829)
Operating Segments [Member] \| Cable Edge [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations	(7,411)	(498)	(13,491)	(2,351)
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating Expenses	$ (4,853)	$ (9,831)	$ (8,775)	$ (15,510)
TVN [Member]
Segment Reporting Information [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired					100.00%

Commitments and Contingencies - Future Minimum Lease Payments Under Non-cancelable Operating Leases (Detail) $ in Thousands	Jun. 30, 2017 USD ($)
Commitments and Contingencies Disclosure [Abstract]
2017 (remaining six months)	$ 6,759
2018	12,812
2019	10,980
2020	7,521
2021	2,166
Thereafter	8,586
Total	$ 48,824

Commitments and Contingencies - Summary of Warranty Accrual Included in Accrued Liabilities (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Commitments and Contingencies Disclosure [Abstract]
Balance at beginning of period	$ 4,585	$ 4,966	$ 4,862	$ 3,913
Balance assumed from TVN acquisition	0	0	0	1,012
Accrual for current period warranties	1,277	1,716	2,495	2,975
Changes in liability related to pre-existing warranties	0	(74)	0	(74)
Warranty costs incurred	(1,720)	(1,513)	(3,215)	(2,731)
Balance at end of period	$ 4,142	$ 5,095	$ 4,142	$ 5,095

Commitments and Contingencies - Additional Information (Detail)	1 Months Ended
	Jun. 30, 2012 Patents	Oct. 30, 2011 Patents	Jun. 30, 2017 USD ($)
Other Commitments [Line Items]
Non-cancelable purchase commitments			$ 30,900,000
Maximum amount of potential future payments under the company's financial guarantees			700,000
Loss Contingency, Patents Allegedly Infringed, Number \| Patents	1	2
Guarantee Obligations [Member]
Other Commitments [Line Items]
Guarantees related to rent obligations			1,900,000
Indemnification [Member]
Other Commitments [Line Items]
Accrual for indemnification provisions			0
Israel [Member] \| Guarantee Obligations [Member]
Other Commitments [Line Items]
Guarantees related to rent obligations			300,000
TVN [Member] \| Guarantee Obligations [Member]
Other Commitments [Line Items]
Guarantees related to rent obligations			$ 1,300,000

Subsequent Event (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Subsequent Event (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jul. 01, 2016	Dec. 31, 2017	Jun. 30, 2017	Jul. 01, 2016
Subsequent Event [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 1,055	$ 1,909		$ 2,842	$ 4,492
Harmonic 2017 Restructuring Plan [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Restructuring and Related Cost, Incurred Cost			$ 2,800

Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value Based on Three-Tier Fair Value Hierarchy (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Postemployment Benefits Liability, Current	$ 3,915	$ 6,597
Postemployment Benefits Liability, Noncurrent	3,247	3,053
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	556	16,087
Total liabilities measured and recorded at fair value	7,226	9,690
Fair Value, Measurements, Recurring [Member] \| Cost-method Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	192	809
Money market funds [Member] \| Fair Value, Measurements, Recurring [Member] \| Cash equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	246	8,301
Corporate bonds [Member] \| Fair Value, Measurements, Recurring [Member] \| Short-term Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value		6,923
Foreign exchange forward contracts [Member] \| Fair Value, Measurements, Recurring [Member] \| Prepaid Expenses and Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	118	54
Foreign exchange forward contracts [Member] \| Fair Value, Measurements, Recurring [Member] \| Accrued Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured and recorded at fair value	64	40
Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	438	9,110
Total liabilities measured and recorded at fair value	0	0
Level 1 [Member] \| Fair Value, Measurements, Recurring [Member] \| Cost-method Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	192	809
Level 1 [Member] \| Money market funds [Member] \| Fair Value, Measurements, Recurring [Member] \| Cash equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	246	8,301
Level 1 [Member] \| Corporate bonds [Member] \| Fair Value, Measurements, Recurring [Member] \| Short-term Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value		0
Level 1 [Member] \| Foreign exchange forward contracts [Member] \| Fair Value, Measurements, Recurring [Member] \| Prepaid Expenses and Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	0	0
Level 1 [Member] \| Foreign exchange forward contracts [Member] \| Fair Value, Measurements, Recurring [Member] \| Accrued Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured and recorded at fair value	0	0
Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	118	6,977
Total liabilities measured and recorded at fair value	64	40
Level 2 [Member] \| Fair Value, Measurements, Recurring [Member] \| Cost-method Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	0	0
Level 2 [Member] \| Money market funds [Member] \| Fair Value, Measurements, Recurring [Member] \| Cash equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	0	0
Level 2 [Member] \| Corporate bonds [Member] \| Fair Value, Measurements, Recurring [Member] \| Short-term Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value		6,923
Level 2 [Member] \| Foreign exchange forward contracts [Member] \| Fair Value, Measurements, Recurring [Member] \| Prepaid Expenses and Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	118	54
Level 2 [Member] \| Foreign exchange forward contracts [Member] \| Fair Value, Measurements, Recurring [Member] \| Accrued Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured and recorded at fair value	64	40
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Postemployment Benefits Liability, Current	3,915	6,597
Postemployment Benefits Liability, Noncurrent	3,247	3,053
Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	0	0
Total liabilities measured and recorded at fair value	7,162	9,650
Level 3 [Member] \| Fair Value, Measurements, Recurring [Member] \| Cost-method Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	0	0
Level 3 [Member] \| Money market funds [Member] \| Fair Value, Measurements, Recurring [Member] \| Cash equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	0	0
Level 3 [Member] \| Corporate bonds [Member] \| Fair Value, Measurements, Recurring [Member] \| Short-term Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value		0
Level 3 [Member] \| Foreign exchange forward contracts [Member] \| Fair Value, Measurements, Recurring [Member] \| Prepaid Expenses and Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured and recorded at fair value	0	0
Level 3 [Member] \| Foreign exchange forward contracts [Member] \| Fair Value, Measurements, Recurring [Member] \| Accrued Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities measured and recorded at fair value	$ 0	$ 0