Polycom (PLCM) 10-K 29 Feb 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2015	Feb. 22, 2016	Jun. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Trading Symbol	PLCM
Entity Registrant Name	POLYCOM INC
Entity Central Index Key	1,010,552
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		133,913,851
Entity Public Float			$ 1,518,085,174

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents	$ 435,093	$ 443,132
Short-term investments	184,242	185,783
Trade receivables, net	187,888	169,400
Inventories	89,392	100,328
Deferred taxes		38,805
Prepaid expenses and other current assets	52,852	60,539
Total current assets	949,467	997,987
Property and equipment, net	101,853	109,195
Long-term investments	46,484	59,197
Goodwill	558,775	559,231
Purchased intangibles, net	14,065	24,567
Deferred taxes	89,865	54,019
Other assets	21,738	25,071
Total assets	1,782,247	1,829,267
Current liabilities
Accounts payable	73,472	108,172
Accrued payroll and related liabilities	38,781	42,901
Taxes payable	4,342	4,056
Deferred revenue	170,559	173,532
Current portion of long-term debt	5,717	5,717
Other accrued liabilities	85,095	86,193
Total current liabilities	377,966	420,571
Long-term deferred revenue	86,191	89,366
Taxes payable	9,983	11,719
Deferred taxes	135	173
Long-term debt	228,799	234,516
Other non-current liabilities	25,964	49,189
Total liabilities	$ 729,038	$ 805,534
Commitments and contingencies (Note 12)
Stockholders' equity
Common stock, $0.0005 par value; authorized: 350,000,000 shares; issued and outstanding: 132,665,165 shares at December 31, 2015 and 135,204,948 shares at December 31, 2014	$ 66	$ 68
Additional paid-in capital	1,167,701	1,155,829
Accumulated deficit	(113,355)	(136,275)
Accumulated other comprehensive (loss) income	(1,203)	4,111
Total stockholders' equity	1,053,209	1,023,733
Total liabilities and stockholders' equity	$ 1,782,247	$ 1,829,267

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Statement Of Financial Position [Abstract]
Common stock, par value	$ 0.0005	$ 0.0005
Common stock, shares authorized	350,000,000	350,000,000
Common stock, shares issued	132,665,165	135,204,948
Common stock, shares outstanding	132,665,165	135,204,948

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues:
Product revenues	$ 893,762	$ 960,726	$ 991,110
Service revenues	373,463	384,428	377,279
Total revenues	1,267,225	1,345,154	1,368,389
Cost of revenues:
Cost of product revenues	390,618	406,625	422,429
Cost of service revenues	137,854	153,520	153,189
Total cost of revenues	528,472	560,145	575,618
Gross profit	738,753	785,009	792,771
Operating expenses:
Sales and marketing	349,732	388,761	435,047
Research and development	191,456	196,495	216,032
General and administrative	88,626	99,886	96,602
Amortization of purchased intangibles	9,495	9,781	10,389
Restructuring costs	11,096	40,347	48,470
Litigation reserves and payments	0	3,130
Transaction-related costs	574	156	3,424
Total operating expenses	650,979	738,556	809,964
Operating income (loss)	87,774	46,453	(17,193)
Interest and other income (expense), net
Interest expense	(6,131)	(5,893)	(3,217)
Other income (expense), net	4,276	2,455	(1,794)
Interest and other income (expense), net	(1,855)	(3,438)	(5,011)
Income (loss) from continuing operations before provision for (benefit from) income taxes	85,919	43,015	(22,204)
Provision for (benefit from) income taxes	15,944	956	(3,669)
Net income (loss) from continuing operations	69,975	42,059	(18,535)
Gain from sale of discontinued operations, net of taxes			459
Net income (loss)	$ 69,975	$ 42,059	$ (18,076)
Basic net income (loss) per share:
Net income (loss) per share from continuing operations	$ 0.52	$ 0.31	$ (0.11)
Basic net income (loss) per share	0.52	0.31	(0.11)
Diluted net income (loss) per share:
Net income (loss) per share from continuing operations	0.51	0.30	(0.11)
Diluted net income (loss) per share	$ 0.51	$ 0.30	$ (0.11)
Number of shares used in computation of net income (loss) per share:
Basic	133,581	136,801	167,272
Diluted	137,394	142,005	167,272

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net income (loss)	$ 69,975	$ 42,059	$ (18,076)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(3,744)	(1,422)	1,039
Unrealized gains/losses on investments:
Unrealized holding gains (losses) arising during the period	(159)	(115)	18
Net gains (losses) reclassified into earnings	14	(10)	53
Net unrealized gains (losses) on investments	(145)	(125)	71
Unrealized gains/losses on hedging securities:
Unrealized hedge gains arising during the period	4,954	3,627	1,374
Net unrealized gains (losses) on hedging securities	(1,425)	1,286	(934)
Other comprehensive income (loss)	(5,314)	(261)	176
Comprehensive income (loss)	64,661	41,798	(17,900)
Product revenues
Unrealized gains/losses on hedging securities:
Net (gains) losses reclassified into earnings for revenue/expense hedge	(14,028)	(1,170)	(207)
Operating Expenses
Unrealized gains/losses on hedging securities:
Net (gains) losses reclassified into earnings for revenue/expense hedge	$ 7,649	$ (1,171)	$ (2,101)

Consolidated Statements Of Stoc

Consolidated Statements Of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive (Loss) Income	Retained Earnings (Accumulated Deficit)
Beginning balances at Dec. 31, 2012	$ 1,427,774	$ 38	$ 1,326,436	$ 4,196	$ 97,104
Beginning balances, shares at Dec. 31, 2012		175,323,885
Net income (loss)	(18,076)				(18,076)
Other comprehensive income (loss)	176			176
Issuance of vested performance shares and restricted stock units (in shares)		2,828,464
Exercise of stock options under stock option plan	1,786		1,786
Exercise of stock options under stock option plan, shares		187,682
Shares purchased under employee stock purchase plan	21,540	$ 1	21,539
Shares purchased under employee stock purchase plan, shares		2,904,287
Purchase and retirement of common stock at cost, including fees and expenses	(487,180)	$ (22)	(275,782)		(211,376)
Purchase and retirement of common stock at cost, including fees and expenses, shares		(46,084,352)
Common stock repurchase holdback	(27,922)		(27,922)
Stock-based compensation	64,665		64,665
Tax expense for stock-based award activity	(6,398)		(6,398)
Correction of an error in par value		$ 51	(51)
Ending balances at Dec. 31, 2013	976,365	$ 68	1,104,273	4,372	(132,348)
Ending balances, shares at Dec. 31, 2013		135,159,966
Net income (loss)	42,059				42,059
Other comprehensive income (loss)	(261)			(261)
Issuance of vested performance shares and restricted stock units		$ 2	(2)
Issuance of vested performance shares and restricted stock units (in shares)		3,467,414
Exercise of stock options under stock option plan	1,513		1,513
Exercise of stock options under stock option plan, shares		133,037
Shares purchased under employee stock purchase plan	22,217	$ 1	22,216
Shares purchased under employee stock purchase plan, shares		2,944,069
Purchase and retirement of common stock at cost, including fees and expenses	(64,762)	$ (3)	(18,773)		(45,986)
Purchase and retirement of common stock at cost, including fees and expenses, shares		(6,499,538)
Stock-based compensation	48,204		48,204
Tax expense for stock-based award activity	(1,602)		(1,602)
Ending balances at Dec. 31, 2014	$ 1,023,733	$ 68	1,155,829	4,111	(136,275)
Ending balances, shares at Dec. 31, 2014	135,204,948	135,204,948
Net income (loss)	$ 69,975				69,975
Other comprehensive income (loss)	(5,314)			(5,314)
Issuance of vested performance shares and restricted stock units		$ 1	(1)
Issuance of vested performance shares and restricted stock units (in shares)		3,452,569
Exercise of stock options under stock option plan	$ 620		620
Exercise of stock options under stock option plan, shares	53,219	53,219
Shares purchased under employee stock purchase plan	$ 21,259	$ 1	21,258
Shares purchased under employee stock purchase plan, shares		2,150,586
Purchase and retirement of common stock at cost, including fees and expenses	(105,288)	$ (4)	(58,229)		(47,055)
Purchase and retirement of common stock at cost, including fees and expenses, shares		(8,196,157)
Stock-based compensation	45,572		45,572
Tax expense for stock-based award activity	2,652		2,652
Ending balances at Dec. 31, 2015	$ 1,053,209	$ 66	$ 1,167,701	$ (1,203)	$ (113,355)
Ending balances, shares at Dec. 31, 2015	132,665,165	132,665,165

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net income (loss)	$ 69,975	$ 42,059	$ (18,076)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	51,682	57,412	64,779
Amortization of purchased intangibles	10,502	12,891	19,825
Amortization of capitalized software development costs for products to be sold	3,102	1,704	196
Amortization of debt issuance costs	532	533	178
Amortization of discounts and premiums on investments, net	2,095	1,964	1,816
Provision for doubtful accounts		600
Write-down of excess and obsolete inventories	12,112	6,532	7,390
Stock-based compensation expense	45,139	47,960	64,465
Excess tax benefits from stock-based compensation expense	(4,431)	(3,371)	(920)
Loss on disposal of property and equipment	1,252	5,007	5,859
Net gain on sale of discontinued operations			(459)
Changes in assets and liabilities, net of effects of acquisitions:
Trade receivables	(19,022)	13,479	13,809
Inventories	(1,677)	(3,551)	(10,739)
Deferred taxes	(6,193)	(17,792)	(14,332)
Prepaid expenses and other assets	8,947	(8,456)	(637)
Accounts payable	(31,470)	19,006	(5,184)
Taxes payable	10,465	9,825	(5,848)
Other accrued liabilities and deferred revenue	(33,461)	19,624	46,320
Net cash provided by operating activities	119,549	205,426	168,442
Cash flows from investing activities:
Purchases of property and equipment	(47,562)	(50,133)	(53,042)
Capitalized software development costs for products to be sold	(5,144)	(4,807)	(2,165)
Purchases of investments	(247,303)	(269,842)	(228,238)
Proceeds from sales of investments	18,589	45,492	45,467
Proceeds from maturities of investments	240,684	168,328	237,499
Net cash received from sale of discontinued operations			556
Net cash paid in purchase acquisitions			(7,974)
Net cash used in investing activities	(40,736)	(110,962)	(7,897)
Cash flows from financing activities:
Proceeds from issuance of common stock under employee option and stock purchase plans	21,879	23,729	23,326
Proceeds from debt, net of debt issuance costs			247,349
Payments on debt	(6,250)	(6,250)	(1,562)
Purchase and retirement of common stock under share purchase plan	(89,953)	(49,981)	(505,898)
Purchase and retirement of common stock for tax withholdings on vesting of employee stock-based awards	(15,335)	(14,830)	(9,124)
Excess tax benefits from stock-based compensation expense	4,431	3,371	920
Net cash used in financing activities	(85,228)	(43,961)	(244,989)
Effect of exchange rate changes on cash and cash equivalents	(1,624)
Net (decrease) increase in cash and cash equivalents	(8,039)	50,503	(84,444)
Cash and cash equivalents, beginning of period	443,132	392,629	477,073
Cash and cash equivalents, end of period	435,093	443,132	392,629
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	5,498	5,028	2,847
Cash paid for income taxes	$ 7,353	$ 15,273	$ 9,505

Description of Business and Bas

Description of Business and Basis of Presentation	12 Months Ended
	Dec. 31, 2015
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Description of Business and Basis of Presentation	1. Description of Business and Basis of Presentation Description of Business Polycom, Inc. (“Polycom” or “the Company”) is a leading global provider of high-quality, easy-to-use collaboration solutions that enable enterprise, government, education and healthcare customers to more effectively collaborate over distance, time zones and organizational boundaries. The Company’s solutions are built on architectures that enable unified video, voice and content communications. Polycom was incorporated in the state of Delaware in December 1990 and trades on the NASDAQ Global Select Market under the ticker symbol “PLCM”. Principles of Accounting and Consolidation These Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“US GAAP”). The Consolidated Financial Statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated. Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the Company’s Consolidated Financial Statements and accompanying Notes to Consolidated Financial Statements. Actual results could differ from those estimates.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies Cash and Cash Equivalents The Company considers all highly liquid investments with original maturities of three months or less at the time of purchase to be cash equivalents. Investments Investments are classified as short-term or long-term based on their remaining maturities. The Company’s short-term and long-term investments as of December 31, 2015 are comprised of U.S. and non-U.S. government securities, U.S. government agency securities and corporate debt securities. All investments are held in the Company’s name at a limited number of major financial institutions. At December 31, 2015 and 2014, all of the Company’s investments were classified as available-for-sale and unrealized gains and losses on investments are recorded as a separate component of “Accumulated other comprehensive (loss) income” in the Consolidated Statements of Stockholders’ Equity. The Company reviews the individual securities in its portfolio to determine whether a decline in a security’s fair value below the amortized cost basis is other-than-temporary. If the decline in fair value is considered to be other-than-temporary, the cost basis of the individual security is written down to its fair value as a new cost basis. If the investments are sold at a loss or are considered to have other-than-temporarily declined in value, the amount of the loss or write-down is accounted for as a realized loss and included in earnings. The specific identification method is used to determine the cost of securities disposed of, with realized gains and losses reflected in “Interest and other income (expense), net” in the Consolidated Statements of Operations. Allowance for Doubtful Accounts The Company maintains an allowance for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. The Company regularly performs credit evaluations of its customers' financial condition and considers factors such as historical experience, credit quality, age of the accounts receivable balances, and geographic or country-specific risks and economic conditions that may affect a customer's ability to pay. The allowance for doubtful accounts is reviewed quarterly and adjusted if necessary based on the Company's assessment of its customer’s ability to pay Inventories Inventories are valued at the lower of cost or market with cost computed on a first-in, first-out (FIFO) basis. Consideration is given to obsolescence, excessive levels, deterioration and other factors in evaluating net realizable value. The Company records write-downs for excess and obsolete inventory equal to the difference between the carrying value of inventory and the estimated future selling price based upon assumptions about future product life-cycles, product demand and market conditions. At the point of the loss recognition, a new, lower-cost basis for that inventory is established, and subsequent changes in facts and circumstances do not result in the restoration or increase in that newly established cost basis. Property and Equipment Property and equipment are stated at cost less accumulated depreciation and amortization. Depreciation is provided using the straight-line method over the estimated useful lives of the assets, generally from one to seven years. Amortization of leasehold improvements is computed using the straight-line method over the shorter of the remaining lease term or the estimated useful lives of the related assets, typically three to thirteen years. Disposals of capital equipment are recorded by removing the costs and accumulated depreciation from the accounts and gains or losses on disposals are included in “Interest and other income (expense), net” in the Consolidated Statements of Operations. Goodwill Goodwill represents the excess of the purchase price over the fair value of net tangible and intangible assets acquired in a business combination. Goodwill is not amortized but is regularly reviewed for potential impairment. The Company reviews goodwill for impairment annually during the fourth quarter of each calendar year, or whenever events or changes in circumstances indicate the carrying amount of goodwill may not be recoverable. The Company performs an initial qualitative assessment to determine whether it is more likely than not that the fair value of the reporting unit is less than its carrying amount. If, after the initial qualitative assessment, the Company determines that it is more likely than not that the fair value of the reporting unit exceeds its carrying value and there is no indication of impairment, no further testing is performed; however, if the Company concludes otherwise Long-Lived Assets Purchased intangible assets with finite lives are amortized using the straight-line method over the estimated economic lives of the assets, which range from several months to six years. Purchased intangible assets determined to have indefinite useful lives are not amortized. Long-lived assets, including purchased intangible assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. Determination of recoverability is based on an estimate of undiscounted future cash flows resulting from the use of the asset or group of assets and their eventual disposition. The Company periodically assesses the remaining useful lives of long-lived assets. Measurement of an impairment loss for long-lived assets that management expects to hold and use is based on the estimated fair value of the asset. Long-lived assets to be disposed of are reported at the lower of carrying amount or estimated fair value less costs to sell. Warranty The Company provides for the estimated costs of product warranties at the time revenue is recognized. The specific terms and conditions of those warranties vary depending upon the product sold. In the case of hardware products, warranties generally start from the delivery date and continue for one year. Software products generally carry a 90-day warranty from the date of purchase. The Company’s liability under warranties on software products is to provide a corrected copy of any portion of the software found not to be in substantial compliance with the agreed upon specifications. Factors that affect the Company’s warranty obligation include product failure rates, material usage and service delivery costs incurred in correcting product failures. The Company assesses the adequacy of the recorded warranty liabilities every quarter and makes adjustments to the liability if necessary. Deferred Services Revenue The Company offers maintenance contracts for sale on most of its products which allow for customers to receive maintenance support in addition to the contractual product warranty. The Company also provides managed services to its customers under contractual arrangements. The Company recognizes the maintenance and managed services revenues from these contracts over the life of the service contract. Revenue Recognition The Company recognizes revenue when persuasive evidence of an arrangement exists, title and risk of loss have transferred, product payment is not contingent upon performance of installation or service obligations, the price is fixed or determinable, and collectability is reasonably assured. Additionally, the Company recognizes maintenance service revenues on its hardware and software products ratably over the service periods of one to five years, and other services upon the completion of implementation or professional services provided. Most of the Company’s products are integrated with software that is essential to the functionality of the equipment. Additionally, the Company provides unspecified software upgrades and enhancements related to most of these products through maintenance contracts. A multiple-element arrangement includes the sale of one or more tangible product offerings with one or more associated services offerings, each of which are individually considered separate units of accounting. The Company allocates revenue to each element in a multiple-element arrangement based upon the relative selling price of each deliverable. When applying the relative selling price method, the Company determines the selling price for each deliverable using vendor specific objective evidence (“VSOE”) of selling price, if it exists, or third party evidence (“TPE”) of selling price. If neither VSOE nor TPE of selling price exist for a deliverable, the Company uses its best estimate of selling price (“ESP”) for that deliverable. Revenue allocated to each element is then recognized when the other revenue recognition criteria are met for each element. VSOE is established based on the Company’s standard pricing and discounting practices for the specific product or service when sold separately. In determining VSOE, the Company requires that a substantial majority of the selling prices for a product or service fall within a reasonably narrow pricing range. When VSOE cannot be established, the Company attempts to establish the selling price of each element based on TPE. TPE is determined based on competitor prices for similar deliverables when sold separately. When the Company is unable to establish the selling price using VSOE or TPE, the Company uses ESP in its allocation of revenue for the arrangement. ESP represents the price at which the Company would transact a sale if the element were sold on a stand-alone basis. The Company determines ESP for a product by considering multiple factors including, but not limited to, geographies, market conditions, competitive landscape, and pricing practices. The determination of ESP is made based on review of historical sales price, taking into consideration the Company’s go-to-market strategy. Generally, the Company uses historical net selling prices to establish ESP. The Company regularly reviews its basis for establishing VSOE, TPE and ESP. Sales Returns, Channel Partner Programs and Incentives The Company’s contracts generally do not provide for a right of return on any of its products. However, some of the contracts with our distributors contain stock rotation rights. The Company records an estimate of future returns based upon these contractual rights and its historical returns experience. The Company records estimated reductions to revenues for channel partner programs and incentive offerings including special pricing agreements, promotions and other volume-based incentives. The Company also accrues for joint marketing funds as a marketing expense if the Company receives a separable and identifiable benefit in exchange and can reasonably estimate the fair value of the identifiable benefit received; otherwise, it is recorded as a reduction to revenues. Research and Development and Software Development Costs The Company expenses research and development costs as incurred. Software development costs incurred prior to the establishment of technological feasibility are included in research and development costs as incurred. Eligible and material software development costs are capitalized upon the establishment of technological feasibility and before the general availability of such software products, including direct labor and related overhead costs, as well as stock-based compensation. The Company has defined technological feasibility as the establishment of a working model, which typically occurs when beta testing commences. The Company capitalized approximately $5.6 million, $5.1 million, and $2.4 million of development costs in 2015, 2014, and 2013, respectively, for software products to be marketed or sold to customers. The capitalized costs are included in “Other assets” in the Company’s Consolidated Balance Sheets and are being amortized on a product-by-product basis using the straight-line method over the estimated product life, generally three years, or on the ratio of current revenues to total projected product revenues, whichever is greater. Management believes that the capitalized software costs will be recoverable from future gross profits generated by these products. Advertising The Company expenses advertising costs as incurred. Advertising expense for the years ended December 31, 2015 and 2014 was $13.6 million for both years and $14.9 million for the year ended December 31, 2013. Income Taxes The Company accounts for income taxes under the liability method, which recognizes deferred tax assets and liabilities based on the difference between the financial statement and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to affect taxable income. Valuation allowances are established to reduce deferred tax assets when, based on available objective evidence, it is more likely than not that the benefit of such assets will not be realized. The Company recognizes and measures benefits for uncertain tax positions using a two-step approach. The first step is to evaluate the tax position taken or expected to be taken in a tax return by determining if the weight of available evidence indicates that it is more likely than not that the tax position will be sustained upon audit, including resolution of any related appeals or litigation processes. For tax positions that are more likely than not to be sustained upon audit, the second step is to measure the tax benefit as the largest amount that is more than 50% likely to be realized upon settlement. Significant judgment is required to evaluate uncertain tax positions. The Company evaluates its uncertain tax positions on a quarterly basis. Evaluations are based upon a number of factors, including changes in facts or circumstances, changes in tax law, correspondence with tax authorities during the course of audits and effective settlement of audit issues. Changes in the recognition or measurement of uncertain tax positions could result in material increases or decreases in income tax expense in the period in which the change is made, which could have a material impact on the Company’s effective tax rate and operating results. The Company recognizes interest and/or penalties related to income tax matters in income tax expense. Foreign Currency Translation Assets and liabilities of non-U.S subsidiaries, where the local currency is the functional currency, are translated to U.S. dollars at exchange rates in effect at the balance sheet date and income and expense accounts are translated at average exchange rates in effect during the period. The resulting translation adjustments are directly recorded to a separate component of “Accumulated other comprehensive (loss) income” on the Consolidated Balance Sheets. Foreign exchange transaction gains and losses from the remeasurement of non-functional currency denominated assets and liabilities are included in the Company’s Consolidated Statements of Operations as part of “Interest and other income (expense), net”. The following table sets forth the change of foreign currency translation adjustments during each reporting period and the balances as of December 31 (in thousands): 2015 2014 2013 Beginning balance $ 2,797 $ 4,219 $ 3,180 Foreign currency translation adjustments (3,744 ) (1,422 ) 1,039 Ending balance $ (947 ) $ 2,797 $ 4,219 Derivative Instruments The accounting for changes in the fair value of a derivative depends on the intended use of the derivative and the resulting designation. For a derivative instrument designated and qualifying as a cash flow hedge, the effective portion of the derivative’s gain or loss is initially reported as a separate component of “Accumulated other comprehensive income” in the Consolidated Statements of Stockholders’ Equity and is subsequently reclassified into earnings when the hedged exposure affects earnings. The excluded and ineffective portions of the gain or loss are reported in “Interest and other income (expense), net” on the Consolidated Statements of Operations, immediately. For derivative instruments that are not designated as cash flow hedges, changes in fair value are recognized in “Interest and other income (expense), net” on the Consolidated Statements of Operations in the period of change. The Company does not hold or issue derivative financial instruments for speculative trading purposes. The Company enters into derivatives only with counterparties that are among the largest U.S. banks, ranked by assets, in order to minimize its credit risk. Share Repurchase and Treasury Shares The Company periodically repurchases shares in the market at fair value. Treasury shares repurchased are recorded at cost as a reduction to Stockholders' equity. On retirement of the repurchased shares, Common stock is reduced by an amount equal to the number of shares being retired multiplied by the par value. The excess of the cost of treasury stock that is retired over its par value is allocated as a reduction between Accumulated deficit and Additional paid-in capital. Net Income Per Share Basic net income per share is computed by dividing net income by the weighted average number of common shares outstanding for the period. Diluted net income per share reflects the additional dilution from potential issuance of common stock, such as stock issuable pursuant to the exercise of stock options and unvested restricted stock units and performance shares. Potentially dilutive shares are excluded from the computation of diluted net income per share when their effect is antidilutive. Fair Value Measurements The Company has certain financial assets and liabilities recorded at fair value which have been classified as Level 1, 2 or 3 within the fair value hierarchy. Fair values determined by Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access. Fair values determined by Level 2 inputs utilize data points that are observable such as quoted prices for similar assets in active markets, or identical or similar assets in inactive markets, interest rates and yield curves. Fair values determined by Level 3 inputs utilize unobservable data points for the asset or liability. On a recurring basis, the Company measures certain financial assets and liabilities at fair value, including its marketable securities and foreign currency contracts. The Company’s cash equivalents and investment instruments are classified within Level 1 or Level 2 of the fair value hierarchy because they are valued using inputs such as quoted market prices, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency. The types of instruments valued based on quoted market prices for identical assets in active markets include money market funds. Such instruments are generally classified within Level 1 of the fair value hierarchy. The types of instruments valued based on other observable inputs include U.S. Treasury, other government agencies, and corporate debt securities. Such instruments are generally classified within Level 2 of the fair value hierarchy. Level 2 instruments are priced using quoted market prices for similar instruments or nonbinding market prices that are corroborated by observable market data. The principal market where the Company executes its foreign currency contracts is the retail market in an over-the-counter environment with a relatively high level of price transparency. The Company’s foreign currency contracts valuation inputs are based on quoted prices and quoted pricing intervals from public data sources such as spot rates, interest rate differentials and credit default rates, which do not involve management judgment. These contracts are typically classified within Level 2 of the fair value hierarchy. In addition, the Company has facilities-related liabilities related to restructuring which were calculated based on the discounted future lease payments less sublease assumptions. This non-recurring fair value measurement is classified as a Level 3 measurement under ASC 820. The key assumptions used in the valuation model include discount rates, cash flow projections and estimated sublease income. These assumptions involve significant judgment, and are based on management’s estimate of current and forecasted market conditions and are sensitive and susceptible to change. The carrying amounts reflected in the Consolidated Balance Sheets for cash and cash equivalents, accounts receivable, accounts payable, and other current accrued liabilities approximate fair value due to their short-term maturities. Stock-Based Compensation The Company’s stock-based compensation programs consist of grants of stock-based awards to employees and non-employee directors, including stock options, restricted stock units and performance shares, as well as purchase rights pursuant to the Company’s Employee Stock Purchase Plan (“ESPP”). Stock-based compensation expense based on the estimated fair value of these awards is charged to operations over the requisite service period, which is generally the vesting period, including the effect of forfeitures. The fair value of stock option and ESPP awards is estimated at the grant date using the Black-Scholes option valuation model. The fair value of restricted stock units is based on the market value of the Company’s common stock on the date of grant. The fair value of a performance share with a market condition is estimated on the date of award, using a Monte Carlo simulation model to estimate the total return ranking of the Company’s stock in relation to the target index of peer companies over each performance period. Stock-based compensation cost on performance shares with a market condition is not adjusted for subsequent changes regardless of the level of ultimate vesting. Recent Accounting Pronouncements In January 2016, the Financial Accounting Standards Board (“FASB”) issued an accounting standard update which amends the current guidance related to accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. The standard is effective for fiscal years beginning after December 15, 2017, and interim periods within fiscal years beginning after December 15, 2017. The Company is evaluating the impact of adopting this standard on its Consolidated Financial Statements and disclosures. In November 2015, the FASB issued an accounting standard update which simplifies presentation of deferred income taxes in the balance sheet by requiring deferred tax liabilities and assets to be classified as noncurrent in lieu of current requirement of separating them into current and noncurrent classification. The standard is effective for fiscal years beginning after December 15, 2016, and interim periods within those annual periods. Early adoption is permitted. The standard can be applied either prospectively to all deferred tax liabilities and assets or retrospectively to all periods presented. The Company prospectively adopted the guidance in 2015 and it reclassified current deferred tax liabilities and assets to noncurrent on its December 31, 2015 Consolidated Balance Sheets. In April 2015, the FASB issued an accounting standard update which provides guidance on whether a cloud computing arrangement includes a software license to a customer of such an arrangement. If a cloud computing arrangement includes a software license, a customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses, otherwise the customer should account for the arrangement as a service contract. The standard is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The standard can be applied prospectively to all arrangements entered into or materially modified after the effective date, or retrospectively. The Company prospectively adopted the guidance in 2015, and such adoption did not have a material impact on the Company’s Consolidated Financial Statements. In April 2015, the FASB issued an accounting standard update which requires an entity to present debt issuance costs in the balance sheet as a direct deduction from the related debt liability rather than as an asset. Amortization of the costs will continue to be reported as interest expense. The standard is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The standard will be applied retrospectively to each prior period presented. The Company adopted the guidance in 2015, and it reclassified approximately $2.0 million of debt issuance costs related to the term loan as a deduction to the carrying amounts on its 2014 Consolidated Balance Sheets. In May 2014, the FASB an accounting standard update which promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services Companies may use either a full retrospective or a modified retrospective approach to adopt the standard. The Company is evaluating the potential effects of the adoption of this standard on its Consolidated Financial Statements.

Discontinued Operations

Discontinued Operations	12 Months Ended
	Dec. 31, 2015
Discontinued Operations And Disposal Groups [Abstract]
Discontinued Operations	3. Discontinued Operations On December 4, 2012, the Company completed the disposition of the net assets of its enterprise wireless voice solutions (“EWS”) business to Mobile Devices Holdings, LLC, a Delaware limited liability corporation. In 2013, the Company recorded an additional gain on sale of discontinued operations, net of taxes, of approximately $0.5 million as a result of the final net working capital adjustment in accordance with the purchase agreement. Additional cash consideration of up to $25.0 million is payable over the next two years subject to certain conditions, including meeting certain agreed-upon EBITDA-based milestones for fiscal 2015 and 2016. These conditions were not met for the fiscal year ended December 31, 2014. Such additional cash consideration will be accounted for as a gain on sale of discontinued operations, net of taxes, when it is realized or realizable.

Accounts Receivable Financing

Accounts Receivable Financing	12 Months Ended
	Dec. 31, 2015
Receivables [Abstract]
Accounts Receivable Financing	4. Accounts Receivable Financing The Company has a financing agreement with an unrelated third party financing company (the “Financing Agreement”) whereby the Company offers distributors and resellers direct or indirect financing on their purchases of the Company’s products and services. In return, the Company agrees to pay the financing company a fee based on a pre-defined percentage of the transaction amount financed. In certain instances, these financing arrangements result in a transfer of our receivables, without recourse, to the financing company. If the transaction meets the applicable criteria under Accounting Standards Codification (“ASC”) 860 and is accounted for as a sale of financial assets, the accounts receivable are excluded from the balance sheet upon the third party financing company’s payment remittance to the Company. In certain legal jurisdictions, the arrangement fees that involve maintenance services or products bundled with maintenance at one price do not qualify as a sale of financial assets in accordance with the authoritative guidance. Accordingly, accounts receivable related to these arrangements are accounted for as a secured borrowing in accordance with ASC 860, and the Company records a liability for any cash received, while maintaining the associated accounts receivable balance until the distributor or reseller remits payment to the third-party financing company. In 2015, 2014 and 2013, total transactions entered pursuant to the terms of the Financing Agreement were approximately $232.6 million, $194.4 million, and $123.4 million, respectively, of which $139.4 million, $136.0 million, and $109.4 million, respectively, were related to the transfer of the financial assets arrangement. The financing of these receivables accelerated the collection of the Company’s cash and reduced its credit exposure. The amount due from the financing company as of December 31, 2015 and 2014 was approximately $32.7 million and $28.5 million, respectively, of which $22.1 million and $20.2 million, respectively, was related to the accounts receivable transferred, and is included in “Trade receivables” in the Company’s Consolidated Balance Sheets. Fees incurred pursuant to the Financing Agreement were approximately $3.4 million, $2.6 million and $1.8 million for the fiscal year ended December 31, 2015, 2014 and 2013, respectively. Those fees were recorded as a reduction to revenues in the Company’s Consolidated Statements of Operations.

Goodwill, Purchased Intangibles

Goodwill, Purchased Intangibles, and Software Development Costs	12 Months Ended
	Dec. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill, Purchased Intangibles, and Software Development Costs	5. Goodwill, Purchased Intangibles, and Software Development Costs Polycom’s business is organized around four major geographic theaters: North America, Caribbean and Latin America (“CALA”), Europe, Middle East and Africa (“EMEA”) and Asia Pacific (“APAC”), which are considered its reporting units. In the fourth quarter of 2015, the Company performed the qualitative assessment for its four reporting units. For each reporting unit, the Company weighed the relative impact of factors that are specific to the reporting unit as well as industry and macroeconomic factors. The reporting unit specific factors that were considered included the results of the most recent impairment tests, as well as financial performance and changes to the reporting units’ carrying amounts since the most recent impairment tests. For the industry in which the reporting units operate, the Company considered growth projections from independent sources and significant developments or transactions within the industry during 2015, where applicable. The Company also determined that macroeconomic factors during 2015 did not have a significant impact on the discount rates and growth rates used for the valuation performed. Based on the qualitative assessment, the Company concluded that for the four reporting units, it was more likely than not that the fair value of each reporting unit exceeded its carrying amount and there was no indication of impairment. As a result, performing the two-step impairment test was unnecessary and that no impairment charge was recognized for 2015. The following table summarizes the changes in carrying amount of goodwill in each of the Company’s segments for the periods presented (in thousands): Segments Americas EMEA APAC Total Balance at December 31, 2013 $ 308,159 $ 101,882 $ 149,419 $ 559,460 Foreign currency translation — — (229 ) (229 ) Balance at December 31, 2014 308,159 101,882 149,190 559,231 Foreign currency translation — — (456 ) (456 ) Balance at December 31, 2015 $ 308,159 $ 101,882 $ 148,734 $ 558,775 The following table sets forth details of the Company’s total purchased intangible assets and capitalized software development costs for products to be sold as of the following periods (in thousands): December 31, 2015 December 31, 2014 Gross Value Accumulated Amortization & Net Value Gross Value Accumulated Amortization & Impairment Net Value Core and developed technology $ 81,178 $ (80,945 ) $ 233 $ 81,178 $ (79,986 ) $ 1,192 Customer and partner relationships 79,525 (66,742 ) 12,783 79,525 (57,983 ) 21,542 Non-compete agreements 1,800 (1,700 ) 100 1,800 (1,100 ) 700 Trade name 3,400 (3,369 ) 31 3,400 (3,229 ) 171 Other 4,462 (4,462 ) — 4,462 (4,418 ) 44 Finite-lived intangible assets 170,365 (157,218 ) 13,147 170,365 (146,716 ) 23,649 Indefinite-lived trade name 918 — 918 918 — 918 Total acquired intangible assets $ 171,283 $ (157,218 ) $ 14,065 $ 171,283 $ (146,716 ) $ 24,567 Capitalized software development costs for products to be sold $ 12,993 $ (5,002 ) $ 7,991 $ 7,416 $ (1,900 ) $ 5,516 The Company determined that a purchased trade name intangible of $0.9 million had an indefinite life as the Company expects to generate cash flows related to this asset indefinitely. No impairment charges related to the Company’s purchased intangible assets were recognized in the years ended December 31, 2015, 2014, and 2013. The following table summarizes amortization expense recorded in the following periods (in thousands): Year Ended December 31, 2015 2014 2013 Amortization of purchased intangibles in revenues $ 51 $ 75 $ 75 Amortization of purchased intangibles in cost of product revenues 956 3,035 9,361 Amortization of purchased intangibles in operating expenses 9,495 9,781 10,389 Total amortization expenses of purchased intangibles $ 10,502 $ 12,891 $ 19,825 Amortization expense of purchased intangibles is not allocated to the Company’s operating segments. The estimated future amortization expense of purchased intangible assets as of December 31, 2015 is as follows (in thousands): Year ending December 31, Amount 2016 $ 8,478 2017 4,669 2018 — 2019 — 2020 — Total $ 13,147

Balance Sheet Details

Balance Sheet Details	12 Months Ended
	Dec. 31, 2015
Balance Sheet Related Disclosures [Abstract]
Balance Sheet Details	6. Balance Sheet Details Trade receivables, net, consist of the following (in thousands): December 31, 2015 2014 Gross trade receivables $ 242,911 $ 214,664 Returns and other reserves (52,000 ) (42,224 ) Allowance for doubtful accounts (3,023 ) (3,040 ) Total $ 187,888 $ 169,400 Inventories consist of the following (in thousands): December 31, 2015 2014 Raw materials $ 824 $ 1,496 Work in process 117 545 Finished goods 88,451 98,287 Total $ 89,392 $ 100,328 Prepaid expenses and other current assets consist of the following (in thousands): December 31, 2015 2014 Non-trade receivables $ 7,689 $ 6,547 Prepaid expenses 33,174 37,385 Derivative assets 10,396 14,342 Other current assets 1,593 2,265 Total $ 52,852 $ 60,539 Property and equipment, net, consist of the following (in thousands): December 31, Estimated 2015 2014 Computer equipment and software 3 to 5 years $ 315,828 $ 294,724 Equipment, furniture and fixtures 1 to 7 years 123,124 115,226 Tooling equipment 3 years 18,123 16,325 Leasehold improvements 3 to 13 years 59,962 59,663 Total gross property and equipment 517,037 485,938 Less: Accumulated depreciation and amortization (415,184 ) (376,743 ) Total $ 101,853 $ 109,195 Deferred revenue consist of the following (in thousands): December 31, 2015 2014 Short-term: Service $ 165,594 $ 171,355 Product — 94 License 4,965 2,083 Total $ 170,559 $ 173,532 Long-term: Service $ 82,598 $ 85,925 License 3,593 3,441 Total $ 86,191 $ 89,366 Changes in the deferred service revenue in 2015 and 2014 are as follows (in thousands): Year Ended December 31, 2015 2014 Balance at beginning of period $ 257,280 $ 253,793 Additions to deferred service revenue 331,876 347,896 Amortization of deferred service revenue (340,964 ) (344,409 ) Balance at end of period $ 248,192 $ 257,280 Changes in the deferred license revenue in 2015 and 2014 are as follows (in thousands): Year Ended December 31, 2015 2014 Balance at beginning of period $ 5,524 $ 5,775 Additions to deferred license revenue 5,706 1,345 Amortization of deferred license revenue (2,672 ) (1,596 ) Balance at end of period $ 8,558 $ 5,524 Other current accrued liabilities consist of the following (in thousands): December 31, 2015 2014 Accrued expenses $ 25,179 $ 27,523 Accrued co-op expenses 2,670 4,102 Restructuring reserves 16,187 12,207 Warranty obligations 10,172 11,613 Derivative liabilities 6,031 8,175 Employee stock purchase plan withholdings 9,668 10,658 Other accrued liabilities 15,188 11,915 Total $ 85,095 $ 86,193 Changes in the warranty obligations in 2015 and 2014 are as follows (in thousands): Year Ended December 31, 2015 214 Balance at beginning of period $ 11,613 $ 9,475 Accruals for warranties issued during the period 12,444 16,753 Charges against warranty reserve during the period (13,885 ) (14,615 ) Balance at end of period $ 10,172 $ 11,613

Restructuring Costs

Restructuring Costs	12 Months Ended
	Dec. 31, 2015
Restructuring And Related Activities [Abstract]
Restructuring Costs	7. Restructuring Costs In 2015, 2014, and 2013, the Company recorded $11.1 million, $40.3 million, and $48.5 million, respectively, related to restructuring actions that included the elimination or relocation of various positions and the consolidation and elimination of certain facilities. These actions are generally intended to streamline and focus the Company’s efforts and more properly align the Company’s cost structure with its projected future revenue streams. The following table summarizes the activity of the Company’s restructuring reserves (in thousands): Severance/Other Facilities Other Total Balance at December 31, 2012 $ 1,362 $ 7,464 $ — $ 8,826 Additions to the reserve, net 10,185 36,770 2,880 49,835 Interest accretion — 1,461 — 1,461 Non-cash adjustments — (3,547 ) — (3,547 ) Cash payments (10,404 ) (8,362 ) (2,880 ) (21,646 ) Balance at December 31, 2013 1,143 33,786 — 34,929 Additions to the reserve, net 11,755 28,524 — 40,279 Interest accretion — 2,347 — 2,347 Non-cash adjustments — (4,855 ) — (4,855 ) Cash payments (12,234 ) (18,893 ) — (31,127 ) Balance at December 31, 2014 664 40,909 — 41,573 Additions to the reserve, net 13,999 (5,268 ) 801 9,532 Interest accretion — 1,564 — 1,564 Non-cash adjustments — (696 ) — (696 ) Cash payments (6,591 ) (18,054 ) — (24,645 ) Balance at December 31, 2015 $ 8,072 $ 18,455 $ 801 $ 27,328 During 2015, management initiated the reduction or elimination of certain leased facilities and the elimination of approximately 11 percent of the Company’s global workforce which is expected to be substantially complete by the third quarter of 2016. These actions were designed to improve its profitability by strategically investing in more accretive areas of the business and further leveraging its outsource partners, pursuant to the announcement in December 2015. As a result, in the fourth quarter of 2015, the Company recorded approximately $9.4 million of charges for severance and other one-time employee benefits for the individuals impacted. The restructuring charges in 2015 also include approximately $4.6 million for severance payments for certain employees and approximately $2.7 million for facilities-related charges as part of discrete follow-on actions to previous restructuring actions, and adjustments of approximately $8.0 million related to a change in assumptions used in our facilities-related restructuring reserves estimate. Additions to the reserve include $1.6 million of deferred rent that was expensed in prior periods. During 2014, management completed the reduction or elimination of certain leased facilities and the elimination of approximately six percent of the Company’s global workforce. These actions were designed to better align expenses to the Company’s revenue and gross margin profile, and position the Company for improved operating performance, pursuant to the announcement in January 2014. As a result, the Company recorded approximately $28.6 million in restructuring charges related to idle facilities upon vacating these facilities. Additions to the reserve include $2.3 million of deferred rent that was expensed in prior periods. Additionally, the Company recorded approximately $11.8 million of restructuring charges related to severance and other employee benefits in 2014. During 2013, management completed the consolidation and elimination of certain facilities globally and the elimination of approximately four percent of the Company’s global workforce. These actions were generally intended to optimize the organization and manage expenses to gain or improve operating efficiencies and profitability. As a result, the Company recorded approximately $38.2 million in restructuring charges related to idle facilities upon vacating these facilities. Additions to the reserve include $2.8 million of deferred rent that was expensed in prior periods. Additionally, in 2013, the Company recorded approximately $10.2 million of restructuring charges related to severance and other employee benefits, and approximately $2.9 million of other restructuring charges associated with changes to the Company’s product roadmap as it focused on products and solutions with greater revenue and margin potential. The Company expects the remaining charges related to these actions to be in the range of $13 million to $16 million, primarily related to its EMEA reportable segment. As of December 31, 2015, the restructuring reserve was primarily comprised of facilities-related liabilities. At the time the reserve is initially set up, the Company calculates the fair value of its facilities-related liabilities based on the discounted future lease payments less sublease assumptions. To the extent that actual sublease income, the timing of subleasing the facility, or the associated cost of, or the recorded liability related to subleasing or terminating the Company’s lease obligations for these facilities is different than initial estimates, the Company adjusts its restructuring reserves in the period during which such information becomes known. This non-recurring fair value measurement is classified as a Level 3 measurement under ASC 820.

Debt

Debt	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Debt	8. Debt In September 2013, the Company entered into a Credit Agreement (the “Credit Agreement”) that provides for a $250.0 million term loan (the “Term Loan”) maturing on September 13, 2018 (the “Maturity Date”), which bears interest at the Company’s option at either a base rate plus a spread of 0.50% to 1.00%, or a reserve adjusted LIBOR rate plus a spread of 1.50% to 2.00% based on the Company’s consolidated leverage ratio for the preceding four fiscal quarters. The Company entered into the Credit Agreement in conjunction with and for purposes of funding purchases of the Company’s common stock pursuant to a $250.0 million modified “Dutch Auction” self-tender offer announced in September 2013. The Term Loan is payable in quarterly installments of principal equal to approximately $1.6 million which began on December 31, 2013, with the remaining outstanding principal amount of the Term Loan being due and payable on the Maturity Date. The Company may prepay the Term Loan, in whole or in part, at any time without premium or penalty. Amounts repaid or prepaid may not be borrowed again. The Term Loan is secured by substantially all the assets of the Company and certain domestic subsidiaries of the Company that are guarantors under the Credit Agreement, subject to certain exceptions and limitations. The Credit Agreement contains customary affirmative and negative covenants, and financial covenants consisting of a consolidated fixed charge coverage ratio and a consolidated secured leverage ratio. The Company was in compliance with these covenants as of December 31, 2015. The Credit Agreement also includes customary events of default, the occurrence of which could result in the acceleration of the obligations under the Credit Agreement. Under certain circumstances, a default interest rate will apply on all obligations during the existence of an event of default under the Credit Agreement at a per annum rate equal to 2.00% above the applicable interest rate for any overdue principal and 2.00% above the rate applicable for base rate loans for any other overdue amounts. At December 31, 2015, the weighted average interest rate on the Term Loan was 2.3%, the accrued interest on the Term Loan was $0.6 million, and the current and noncurrent portion of the outstanding Term Loan was $5.7 million and $228.8 million, net of unamortized debt issuance costs of $0.5 million and $0.9 million, respectively. The following table summarizes interest expense recognized related to the Term Loan for the periods presented (in thousands): Year Ended December 31, 2015 2014 2013 Contractual interest expense $ 5,246 $ 4,940 $ 1,605 Amortization of debt issuance costs 532 533 178 Total $ 5,778 $ 5,473 $ 1,783 As of December 31, 2015, future principal payments for long-term debt, including the current portion, are summarized as follows (in thousands): Year Ending December 31, Amount 2016 $ 6,250 2017 6,250 2018 223,438 2019 — 2020 — Thereafter — Total $ 235,938

Investments

Investments	12 Months Ended
	Dec. 31, 2015
Investments Debt And Equity Securities [Abstract]
Investments	9. Investments The Company had cash and cash equivalents of $435.1 million and $443.1 million at December 31, 2015 and 2014, respectively. Cash and cash equivalents generally consist of cash in banks, as well as highly liquid investments in money market funds, time deposits, savings accounts, commercial paper, and corporate debt securities. The Company’s U.S. government securities are mostly comprised of direct U.S. Treasury obligations that are guaranteed by the U.S. government and U.S. government agency securities that are mostly comprised of U.S. government agency instruments, including mortgage-backed securities. The Company’s non-U.S. government securities are mostly comprised of non-U.S. government instruments, including state, municipal and foreign government securities. To ensure that the investment portfolio is sufficiently diversified, the Company’s investment policy requires that a certain percentage of the Company’s portfolio be invested in these types of securities. The Company’s corporate debt securities are comprised of publicly-traded domestic and foreign corporate debt securities. The Company does not purchase auction rate securities, and investments are in instruments that meet high quality credit rating standards, as specified in the Company’s investment policy guidelines. These guidelines also limit the amount of credit exposure to any one issuer or type of instrument. At December 31, 2015, the Company’s long-term investments had contractual maturities of one to two years. In addition, the Company has short-term and long-term investments in debt securities which are summarized as follows (in thousands): Cost Basis Unrealized Gains Unrealized Losses Fair Value Balances at December 31, 2015: Investments-Short-term: U.S. government securities $ 49,036 $ 4 $ (45 ) $ 48,995 U.S. government agency securities 67,723 1 (30 ) 67,694 Non-U.S. government securities 7,303 — (1 ) 7,302 Corporate debt securities 60,290 1 (40 ) 60,251 Total investments - short-term $ 184,352 $ 6 $ (116 ) $ 184,242 Investments-Long-term: U.S. government securities $ 8,058 $ — $ (14 ) $ 8,044 U.S. government agency securities 14,510 — (48 ) 14,462 Corporate debt securities 24,056 2 (80 ) 23,978 Total investments - long-term $ 46,624 $ 2 $ (142 ) $ 46,484 Balances at December 31, 2014: Investments-Short-term: U.S. government securities $ 26,930 $ 7 $ (2 ) $ 26,935 U.S. government agency securities 59,336 7 (6 ) 59,337 Non-U.S. government securities 8,764 2 — 8,766 Corporate debt securities 90,782 10 (47 ) 90,745 Total investments - short-term $ 185,812 $ 26 $ (55 ) $ 185,783 Investments-Long-term: U.S. government securities $ 25,320 $ 4 $ (10 ) $ 25,314 U.S. government agency securities 17,369 1 (14 ) 17,356 Corporate debt securities 16,540 2 (15 ) 16,527 Total investments - long-term $ 59,229 $ 7 $ (39 ) $ 59,197 Unrealized Losses The following table summarizes the fair value and gross unrealized losses of the Company’s investments, including investments categorized as cash equivalents, with unrealized losses, aggregated by type of investment instrument and length of time that individual securities have been in a continuous unrealized loss position (in thousands): Less than 12 Months 12 Months or Greater Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses December 31, 2015: U.S. government securities $ 48,445 $ (59 ) $ — $ — $ 48,445 $ (59 ) U.S. government agency securities 71,861 (78 ) — — 71,861 (78 ) Non-U.S. government securities 5,001 (1 ) — — 5,001 (1 ) Corporate debt securities 52,571 (120 ) — — 52,571 (120 ) Total investments $ 177,878 $ (258 ) $ — $ — $ 177,878 $ (258 ) December 31, 2014: U.S. government securities $ 22,355 $ (12 ) $ — $ — $ 22,355 $ (12 ) U.S. government agency securities 27,348 (20 ) — — 27,348 (20 ) Corporate debt securities 59,667 (62 ) — — 59,667 (62 ) Total investments $ 109,370 $ (94 ) $ — $ — $ 109,370 $ (94 ) In 2015 and 2014, there were no investments in the Company’s portfolio that were other-than temporarily impaired and the Company did not incur any material realized net gains or losses in the years ended December 31, 2015, 2014 2013

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	10. Fair Value Measurements The tables below set forth the Company’s recurring fair value measurements for the periods presented (in thousands): Fair Value Measurements at December 31, 2015 Using Description Total Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs (Level 1) (Level 2) Assets: Fixed income available-for-sale securities Cash and cash equivalents Money market funds $ 10,313 $ 10,313 $ — Non-U.S. government securities 975 — 975 Corporate debt securities 19,799 — 19,799 Short-term investments 184,242 — 184,242 Long-term investments 46,484 — 46,484 Total fixed income available-for-sale securities $ 261,813 $ 10,313 $ 251,500 Foreign currency forward contracts (a) $ 10,396 $ — $ 10,396 Liabilities: Foreign currency forward contracts (b) $ 6,031 $ — $ 6,031 Fair Value Measurements at December 31, 2014 Using Description Total Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs (Level 1) (Level 2) Assets: Fixed income available-for-sale securities Cash and cash equivalents Money market funds $ 1,395 $ 1,395 $ — Corporate debt securities 7,549 — 7,549 Short-term investments 185,783 — 185,783 Long-term investments 59,197 — 59,197 Total fixed income available-for-sale securities $ 253,924 $ 1,395 $ 252,529 Foreign currency forward contracts (a) $ 14,342 $ — $ 14,342 Liabilities: Foreign currency forward contracts (b) $ 8,175 $ — $ 8,175 ( a ) Included in short-term derivative asset as “Prepaid expenses and other current assets” in the Consolidated Balance Sheets. ( b ) Included in short-term derivative liability as “Other accrued liabilities” in the Consolidated Balance Sheets. There have been no transfers between Level 1 and Level 2 in 2015 and 2014. There w ere In addition, the Company has facilities-related liabilities related to restructuring which were calculated based on the discounted future lease payments less sublease assumptions. This non-recurring fair value measurement is classified as a Level 3 measurement under ASC 820. See Note 7 Restructuring Costs for further details. The Company’s Term Loan under its Credit Agreement is classified within Level 2 instruments as the borrowings are not actively traded and have a variable interest rate structure based upon market rates currently available to the Company for debt with similar terms and maturities. The Company has elected not to record its Term Loan at fair value, but has measured it at fair value for disclosure purpose. At December 31, 2015 and 2014, the estimated fair value of the Term Loan, using observable market inputs, was approximately $226.5 million and $234.9 million, respectively.

Business Risks and Credit Conce

Business Risks and Credit Concentration	12 Months Ended
	Dec. 31, 2015
Risks And Uncertainties [Abstract]
Business Risks and Credit Concentration	11. Business Risks and Credit Concentration The Company sells products and services which serve the communications equipment market globally. Substantially all of the Company’s revenues are derived from sales of its products and their related services. A substantial majority of the Company’s revenue is from value-added resellers, distributors and service providers. In 2015, 2014 and 2013, one channel partner, ScanSource Communications (“ScanSource”), accounted for 20 %, 17%, and 16%, respectively, of the Company’s total revenues. The Company subcontracts the manufacture of most of its products to Celestica Inc. (“Celestica”), Askey Computer Corporation (“Askey”), Foxconn Technology Group (“Foxconn”), Pegatron Corporation (“Pegatron”), and VTech Holding Ltd. (“VTech”), which are all third-party contract manufacturers. The Company uses Celestica’s facilities in Thailand and Laos, and Askey’s, Foxconn’s, Pegatron’s, and VTech’s facilities in China and should there be any disruption in services due to natural disaster, terrorist acts, quarantines or other disruptions associated with infectious diseases, or economic or political difficulties in any of these countries or in Asia or for any other reason, such disruption would harm its business and results of operations. The Company relies on a limited number of third-party contract manufacturers and suppliers to provide manufacturing services for its products. Substantially all of the Company’s video products are manufactured in Celestica’s facilities in Thailand and Laos. All of the Company’s other third party contract manufacturers supply products out of facilities in China. While the Company has begun to develop secondary manufacturing sources for certain products, currently the manufacture and supply of a substantial portion of its products is essentially sole-sourced from Celestica. Although the Company works closely with all its third- party contract manufacturing partners on manufacturing schedules, its future operating results could be adversely affected if a contract manufacturer or supplier were unable to meet their production commitments for any reason. Moreover, any incapacitation of any of the Company’s or its subcontractors’ manufacturing sites, due to destruction, natural disaster or similar events could result in a loss of product inventory. As a result of any of the foregoing, the Company may not be able to meet demand for its products, which could negatively affect revenues in the quarter of the disruption or longer depending upon the magnitude of the event, and could harm its reputation. The Company markets its products to distributors and end-users throughout the world. Management performs ongoing credit evaluations of the Company’s customers and maintains an allowance for potential credit losses. The Company’s credit risk may increase with the expansion of Polycom’s product offerings as customers place larger orders for initial stocking orders and its growth in emerging markets. There can be no assurance that the Company’s credit loss experience will remain at or near historical levels. At December 31, 2015 and 2014, one customer, ScanSource, accounted for 20% and 19% respectively, of total gross accounts receivable. The Company is dependent in part on its continued ability to hire, assimilate and retain highly qualified management personnel. Changes to its global organization and changes in key management personnel could cause disruption to the business and have a negative impact on the Company’s operating results while the operational areas are in transition. The Company has purchased licenses for technology incorporated in its products. The value of these long-term assets is monitored for any impairment and if it is determined that a write-down is necessary, this charge could have a material adverse effect on the Company’s consolidated financial statements. There were no such charges in 2015, 2014 and 2013.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2015
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	12. Commitments and Contingencies Litigation and SEC Investigation From time to time, the Company is involved in claims and legal proceedings that arise in the ordinary course of business. The Company expects that the number and significance of these matters will increase as its business expands. In particular, the Company faces an increasing number of patent and other intellectual property claims as the number of products and competitors in Polycom’s industry grows and the functionality of video, voice, data and web conferencing products overlap. Any claims or proceedings against the Company, whether meritorious or not, could be time consuming, result in costly litigation, require significant amounts of management time, result in the diversion of significant operational resources, or require the Company to enter into royalty or licensing agreements which, if required, may not be available on terms favorable to the Company or at all. If management believes that a loss arising from these matters is probable and can be reasonably estimated, the Company will record a reserve for the loss. As additional information becomes available, any potential liability related to these matters is assessed and the estimates revised. Based on currently available information, management does not believe that the ultimate outcomes of these unresolved matters, individually and in the aggregate, are likely to have a material adverse effect on the Company’s consolidated financial statements. However, litigation is subject to inherent uncertainties, and the Company’s view of these matters may change in the future. Were an unfavorable outcome to occur, there exists the possibility of a material adverse impact on the Company’s consolidated financial statements for the period in which the unfavorable outcome occurs or becomes probable, and potentially in future periods. In 2015, we did not incur any litigation reserves and payments related to on-going litigation matters. In 2014, the Company recorded $3.1 million in “Litigation reserves and payments” on its Consolidated Statements of Operations related to on-going litigation matters, which had not yet been settled. On July 23, 2013, the Company announced that Andrew M. Miller had resigned from the positions of Chief Executive Officer and President of Polycom and from Polycom’s Board of Directors. The Company disclosed that Mr. Miller’s resignation came after a review by the Audit Committee of certain expense submissions by Mr. Miller, where the Audit Committee found certain irregularities in the submissions, for which Mr. Miller had accepted responsibility. Specifically, the Audit Committee determined that Mr. Miller improperly submitted personal expenses to Polycom for payment as business expenses and, in doing so, submitted to Polycom false information about the nature and purpose of expenses. SEC Investigation . As previously disclosed, the Company has been cooperating with the Enforcement Staff of the Securities and Exchange Commission (“SEC”) in connection with its investigation focused on Mr. Miller's expenses and his resignation. On March 31, 2015 the Company entered into a settlement with the SEC. Under the terms of the settlement in which the Company did not admit or deny the SEC’s findings, the Company paid $750,000 in a civil penalty, and agreed not to commit or cause any violations of certain provisions of the Securities Exchange Act of 1934 and related rules. Class Action Lawsuit . On July 26, 2013, a purported shareholder class action, initially captioned ., Case No. 3:13-cv-03476-SC, and presently captioned , ., Case No. 3:13-cv-03476-SC, was filed in the United States District Court for the Northern District of California against the Company and certain of its current and former officers and directors. On December 13, 2013, the Court appointed a lead plaintiff and approved lead and liaison counsel. On February 24, 2014, the lead plaintiff filed a first amended complaint. The amended complaint alleged that, between January 20, 2011 and July 23, 2013, the Company issued materially false and misleading statements or failed to disclose information regarding the Company’s business, operational and compliance policies, including with respect to its former Chief Executive Officer’s expense submissions and the Company’s internal controls. The lawsuit further alleged that the Company’s financial statements were materially false and misleading. The amended complaint alleged violations of the federal securities laws and sought unspecified compensatory damages and other relief. On April 3, 2015, the Court dismissed all claims against Polycom and granted plaintiffs leave to amend. The lead plaintiff filed a second complaint on May 4, 2015. Polycom and the individual defendants moved to dismiss the second amended complaint on June 26, 2015. On January 8, 2016, the parties executed a settlement agreement. The proposed settlement is subject to, and contingent upon, the Court’s review and approval. The lead plaintiff moved for preliminary approval of the settlement. That motion is pending. If the settlement is approved, the settlement payment will be made by Polycom’s insurance carrier. Derivative Lawsuits . On August 21, 2013 and October 16, 2013, two purported shareholder derivative suits, captioned , Case No. 5:13-cv-03880, and ., Case No. 5:13-cv-04810, respectively, were filed in the United States District Court for the Northern District of California against certain of the Company’s current and former officers and directors. On October 31, 2013, these two federal derivative actions were consolidated into , Lead Case No. 3:13-cv-03880. On January 13, 2015, the Court dismissed the operative complaint and granted plaintiffs leave to amend. On April 3, 2015, the Court approved a stipulation dismissing the action with prejudice and entering judgment in favor of defendants. On November 22, 2013 and December 13, 2013, two purported shareholder derivative suits, captioned Ware v. Miller, et al. Clem v. Miller, et al In re Polycom, Inc. Derivative Shareholder Litigation The California state consolidated derivative lawsuit purports to assert claims on behalf of the Company, which is named as a nominal defendant in the actions. The original California state complaints allege claims for breach of fiduciary duty, unjust enrichment, and corporate waste, and allege certain defendants failed to maintain adequate internal controls and issued, or authorized the issuance of, materially false and misleading statements, including with respect to the Company’s former Chief Executive Officer’s expense submissions and the Company’s internal controls. The complaints further allege that certain defendants approved an unjustified separation agreement and caused the Company to repurchase its own stock at artificially inflated prices. The complaints seek unspecified compensatory damages, corporate governance reforms, and other relief. At this time, the Company is unable to estimate any range of reasonably possible loss relating to the derivative actions. As permitted or required under Delaware law and to the maximum extent allowable under that law, the Company has certain obligations to indemnify its current and former officers and directors for certain events or occurrences while the officer or director is, or was serving, at the Company’s request in such capacity. The maximum potential amount of future payments the Company could be required to make under these indemnification obligations is unlimited; however, the Company has a director and officer insurance policy that mitigates the Company’s exposure and enables the Company to recover a portion of any future amounts paid. As a result of the Company’s insurance policy coverage, the Company believes the estimated fair value of these indemnification obligations is not material. As is customary in the Company’s industry, as provided for in local law in the U.S. and other jurisdictions, the Company’s standard contracts provide remedies to its customers, such as defense, settlement, or payment of judgment for intellectual property claims related to the use of its products. From time to time, the Company indemnifies customers against combinations of loss, expense, or liability arising from various trigger events related to the sale and the use of its products and services. In addition, from time to time the Company also provides protection to customers against claims related to undiscovered liabilities, additional product liabilities or environmental obligations. Standby Letters of Credit The Company has standby letters of credit totaling approximately $1.5 million, and $7.2 million at December 31, 2015 and 2014, respectively. Leases The Company leases certain office facilities and equipment under noncancelable operating leases expiring between 2016 and 2023. As of December 31, 2015, the following future minimum lease payments are due under the current lease obligations (in thousands). In addition to these minimum lease payments, the Company is contractually obligated under the majority of its operating leases to pay certain operating expenses during the term of the lease such as maintenance, taxes and insurance. Gross Net Minimum Minimum Lease Sublease Lease Year Ending December 31, Payments Receipts Payments 2016 $ 26,369 $ (2,499 ) $ 23,870 2017 23,331 (2,932 ) 20,399 2018 18,378 (2,802 ) 15,576 2019 16,737 (2,271 ) 14,466 2020 13,987 (1,050 ) 12,937 Thereafter 18,643 (89 ) 18,554 Total $ 117,445 $ (11,643 ) $ 105,802 Rent expense, including the effect of any future rent escalations or rent holiday periods, is recognized on a straight-line basis over the term of the lease, which is deemed to commence upon the Company gaining access and control of the facility. Rent expense for the years ended December 31, 2015, 2014, and 2013 was $23.5 million, $26.8 million, and $32.3 million, respectively.

Foreign Currency Derivatives

Foreign Currency Derivatives	12 Months Ended
	Dec. 31, 2015
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Foreign Currency Derivatives	13. Foreign Currency Derivatives The Company maintains a foreign currency risk management program that is designed to reduce the volatility of the Company’s economic value from the effects of unanticipated currency fluctuations. International operations generate both revenues and costs denominated in foreign currencies. The Company’s policy is to hedge significant foreign currency revenues and costs to improve margin visibility and reduce earnings volatility associated with unexpected changes in currency. The Company also hedges its net foreign currency monetary assets and liabilities, primarily resulting from foreign currency denominated receivables and payables with foreign exchange forward contracts to reduce the risk that the Company’s earnings and cash flows will be adversely affected by changes in foreign currency exchange rates. Non-Designated Hedges The Company executes non-designated foreign exchange forward contracts of foreign currency denominated receivables and payables, primarily denominated in Euros, British Pounds, Israeli Shekels, Brazilian Reals, Chinese Yuan, and Mexican Pesos. These derivative instruments do not subject the Company to material balance sheet risk due to exchange rate movements because gains and losses on these derivatives are intended to offset remeasurement gains and losses on the hedged assets and liabilities. The following table summarizes the Company’s notional position by currency, and approximate U.S. dollar equivalent, at December 31, 2015 of the outstanding non-designated hedges (foreign currency and dollar amounts in thousands): Original Maturities of 360 Days or Less Original Maturities of Greater than 360 Foreign Currency USD Equivalent Positions Foreign Currency USD Equivalent Positions Brazilian Real 18,557 $ 4,752 Buy — $ — — Brazilian Real 36,378 $ 9,141 Sell — $ — — Chinese Yuan — $ — — 85,718 $ 13,364 Buy Chinese Yuan 81,970 $ 12,703 Sell — $ — — Euro 27,878 $ 30,365 Buy 17,876 $ 21,249 Buy Euro 31,275 $ 33,998 Sell 62,745 $ 74,084 Sell British Pound 5,800 $ 8,587 Buy 20,420 $ 31,326 Buy British Pound 5,555 $ 8,214 Sell 24,937 $ 38,446 Sell Israeli Shekel 10,530 $ 2,728 Buy 66,322 $ 17,012 Buy Israeli Shekel 57,984 $ 14,961 Sell — $ — — Mexican Peso 18,178 $ 1,051 Buy — $ — — Mexican Peso 36,063 $ 2,127 Sell — $ — — The following table shows the effect of the Company’s non-designated hedges in the Consolidated Statements of Operations (in thousands): Derivatives Not Designated as Hedging Instruments Location of Gain or (Loss) Recognized in Income on Derivative Amount of Gain or (Loss) Recognized in Income on Derivative Year Ended December 31, 2015 Foreign exchange contracts Interest and other income (expense), net $ 5,440 Year Ended December 31, 2014 Foreign exchange contracts Interest and other income (expense), net $ 6,708 Year Ended December 31, 2013 Foreign exchange contracts Interest and other income (expense), net $ (411 ) Cash Flow Hedges The Company designates forward contracts as cash flow hedges of foreign currency revenues and expenses, primarily the Chinese Yuan, Euro, British Pound and Israeli Shekel. All foreign exchange contracts are carried at fair value on the Consolidated Balance Sheets and the maximum duration of foreign exchange forward contracts do not exceed 13 months. The following tables show the effect of the Company’s derivative instruments designated as cash flow hedges in the Consolidated Statements of Operations for the periods presented (in thousands): Gain or (Loss) Recognized in OCI-Effective Portion Location of Gain or (Loss) Reclassified from OCI into Income-Effective Portion Gain or (Loss) Reclassified from OCI into Income Effective Portion Location of Gain or (Loss) Recognized-Ineffective Portion and Amount Excluded from Effectiveness Testing Gain or (Loss) Recognized Ineffective Portion and Amount Excluded from Effectiveness Testing (a) Year Ended December 31, 2015 Foreign exchange contracts $ 4,954 Product revenues $ 14,028 Interest and other income (expense), net $ 468 Cost of revenues (1,597 ) Sales and marketing (3,864 ) Research and development (800 ) General and administrative (1,388 ) $ 4,954 $ 6,379 $ 468 Year Ended December 31, 2014 Foreign exchange contracts $ 3,627 Product revenues $ 1,170 Interest and other income (expense), net $ 109 Cost of revenues 320 Sales and marketing 772 Research and development 86 General and administrative (7 ) $ 3,627 $ 2,341 $ 109 Year Ended December 31, 2013 Foreign exchange contracts $ 1,374 Product revenues $ 207 Interest and other income (expense), net $ 368 Cost of revenues 279 Sales and marketing 233 Research and development 1,425 General and administrative 164 $ 1,374 $ 2,308 $ 368 ( a) For the year ended December 31, 2015, 2014 and 2013, there were no gains or losses for the ineffective portion. As of December 31, 2015, the Company estimated that all values reported in “Accumulated other comprehensive (loss) income” in the Consolidated Statement of Stockholders’ Equity will be reclassified to income within the next twelve months. In the event the underlying forecasted transaction does not occur, or it becomes probable that it will not occur, the related hedge gains and losses on the cash flow hedge would be immediately reclassified to “Interest and other income (expense), net” on the Consolidated Statements of Operations. There were no ineffective portions of gains or losses from cash flow hedges in the years ended December 31, 2015, 2014 and 2013. The following table summarizes the Company’s notional position by currency, and approximate U.S. dollar equivalent, at December 31, 2015 of the outstanding cash flow hedges, all of which are carried at fair value on the Consolidated Balance Sheet (in thousands): Original Maturities of 360 Days or Less Original Maturities of Greater than 360 Days Foreign Currency USD Equivalent Positions Foreign Currency USD Equivalent Positions Chinese Yuan — $ — — 122,082 $ 18,725 Buy Euro — $ — — 26,824 $ 29,932 Buy Euro — $ — — 73,655 $ 82,077 Sell British Pound — $ — — 24,379 $ 37,070 Buy British Pound — $ — — 34,363 $ 51,741 Sell Israeli Shekel 24,900 $ 6,467 Buy 9,678 $ 2,465 Buy The estimates of fair value are based on applicable and commonly quoted prices and prevailing financial market information as of December 31, 2015. See Note 10 for additional information on the fair value measurements for all financial assets and liabilities, including derivative assets and derivative liabilities that are measured at fair value in the consolidated financial statements on a recurring basis. The following table sets forth the Company’s derivative instruments measured at gross fair value as reflected in the Consolidated Balance Sheets (in thousands): December 31, 2015 December 31, 2014 Fair Derivatives as Hedge Instruments Fair Value of Derivatives Not Instruments Fair Value of Derivatives Designated as Hedge Instruments Fair Value of Derivatives Not Designated as Hedge Instruments Derivative assets (a) Foreign exchange contracts $ 2,283 $ 8,113 $ 5,501 $ 8,841 Derivative liabilities (b) Foreign exchange contracts $ 2,269 $ 3,762 $ 4,041 $ 4,134 (a) All derivative assets are recorded as ”Prepaid expenses and other current assets” in the Consolidated Balance Sheets. (b) All derivative liabilities are recorded as ”Other accrued liabilities” in the Consolidated Balance Sheets. Offsetting Derivative Assets and Liabilities The Company has entered into master netting arrangements with each of its derivative counterparties. These arrangements afford the right to net derivative assets against liabilities with the same counterparty. Under certain default provisions, the Company has the right to set off any other amounts payable to the payee whether or not arising under this agreement. As a result of the netting provisions, the Company’s maximum amount of loss under derivative transactions due to credit risk is limited to the net amounts due from the counterparties under the derivative contracts. Although netting is permitted, it is currently the Company’s policy and practice to record all derivative assets and liabilities on a gross basis in the Consolidated Balance Sheets. The following table sets forth the offsetting of derivative assets (in thousands): Gross Amounts Not Offset in the Consolidated Balance Sheets Gross Amounts of Recognized Assets Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts of Assets Presented in the Consolidated Balance Sheets Financial Instruments Cash Collateral Pledged Net Amount As of December 31, 2015: Foreign exchange contracts $ 10,396 $ — $ 10,396 $ (5,413 ) $ — $ 4,983 As of December 31, 2014: Foreign exchange contracts $ 14,342 $ — $ 14,342 $ (8,175 ) $ — $ 6,167 The following table sets forth the offsetting of derivative liabilities (in thousands): Gross Amounts Not Offset in the Consolidated Balance Sheets Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts of Liabilities Presented in the Consolidated Balance Sheets Financial Instruments Cash Collateral Pledged Net Amount As of December 31, 2015: Foreign exchange contracts $ 6,031 $ — $ 6,031 $ (5,413 ) $ — $ 618 As of December 31, 2014: Foreign exchange contracts $ 8,175 $ — $ 8,175 $ (8,175 ) $ — $ —

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2015
Equity [Abstract]
Stockholders' Equity	14. Stockholders’ Equity Share Repurchase Programs From time to time, the Company’s Board of Directors has approved plans under which the Company may at its discretion purchase shares of its common stock in the open market or through privately negotiated transactions. In July 2014, the Company’s Board of Directors approved a share repurchase plan (“the 2014 repurchase plan”) under which the Company may at its discretion purchase shares in the open market with an aggregate value of up to $200 million. The Company expects to fund the share repurchases through cash on hand and future cash flow from operations. The repurchased shares of common stock have been retired and reclassified as authorized and unissued shares. As of December 31, 2015, the Company had a remaining authorization of purchase up to an additional $60.1 million worth of shares in the open market under the 2014 repurchase plan. In 2014, the Company purchased 3.8 million shares of common stock for cash of $50.0 million from the open market and received 1.5 million shares upon settlement of the accelerated share repurchase contracts discussed below. In 2013, the Company purchased 45.2 million shares of common stock for cash of $502.3 million, including the shares purchased through a tender offer and an accelerated share repurchase program as discussed below. Accelerated Share Repurchase Agreements On December 4, 2013, the Company entered into separate accelerated share repurchase (“ASR”) agreements with two financial institutions to repurchase an aggregate of $114.6 million of common stock as part of the last phase of the Company’s $400 million Return of Capital Program. Under the terms of the ASR agreements, the Company paid an aggregate $114.6 million of cash and received an initial delivery of approximately 8.0 million shares in December 2013. The ASR contracts were settled in June 2014, whereby the Company received an additional 1.5 million shares upon settlement. The aggregate 9.5 million shares ultimately purchased under the ASR program was determined based on the Company’s volume-weighted average stock price (“VWAP”) less an agreed upon discount during the term of the transactions. Total shares repurchased were immediately retired upon delivery and accounted for as a reduction to stockholders’ equity. The costs associated with the ASR transactions were recorded as an adjustment to the stockholders’ equity. Additionally, the Company accounted for the ASR transactions as repurchases of common stock for the purpose of calculating its earnings per share when the shares were received. Accumulated Other Comprehensive (Loss) Income The following table summarizes the changes in accumulated other comprehensive income, net of tax, by component (in thousands). The tax effects were not shown separately, as the impacts were not material. Unrealized Gains and Losses on Cash Flow Hedges Unrealized Gains and Losses on Available-for- Sale Foreign Currency Translation Total Balance as of December 31, 2013 $ 80 $ 73 $ 4,219 $ 4,372 Other comprehensive income (loss) before reclassifications 3,627 (115 ) (1,422 ) 2,090 Amounts reclassified from accumulated other comprehensive income (a) (2,341 ) (10 ) — (2,351 ) Net current-period other comprehensive income (loss) 1,286 (125 ) (1,422 ) (261 ) Balance as of December 31, 2014 $ 1,366 $ (52 ) $ 2,797 $ 4,111 Other comprehensive income (loss) before reclassifications 4,954 (159 ) (3,744 ) 1,051 Amounts reclassified from accumulated other comprehensive income (a) (6,379 ) 14 — (6,365 ) Net current-period other comprehensive loss (1,425 ) (145 ) (3,744 ) (5,314 ) Balance as of December 31, 2015 $ (59 ) $ (197 ) $ (947 ) $ (1,203 ) (a) See Note 13 for details of gains and losses, net of taxes, reclassified out of accumulated other comprehensive (loss) income into net income related to cash flow hedges and each line item of net income affected by the reclassification. Gains and losses related to available-for-sale securities were reclassified into “Interest and other income (expense), net” in the Consolidated Statements of Operations, net of taxes.

Stock-Based Employee Benefit Pl

Stock-Based Employee Benefit Plans	12 Months Ended
	Dec. 31, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Employee Benefit Plans	15. Stock-Based Employee Benefit Plans Equity Incentive Plans Polycom’s equity incentive plans provide for, among other award types, stock options, restricted stock units, and performance shares to be granted to employees and non-employee directors. On May 26, 2011, stockholders approved the 2011 Equity Incentive Plan (“2011 Plan”) and reserved for issuance under the 2011 Plan of 19,800,000 shares, terminating any remaining shares available for grant under the 2004 Equity Incentive Plan (“2004 Plan”) as of such date. On June 5, 2013, shareholders approved the addition of 10,500,000 shares to the available shares for issuance under the 2011 Plan. Shareholders also approved an additional 5,600,000 shares to the available shares for issuance under the 2011 Plan on May 27, 2015. Finally, to the extent any shares, not to exceed 13,636,548 shares, would have been returned to our 2004 Plan after May 26, 2011, on account of the expiration, cancellation or forfeiture of awards granted under our 1996 Stock Incentive Plan or the 2004 Plan, those shares instead have been added to the reserve of shares available under the 2011 Plan. Activity under the above plans for the year ended December 31, 2015 was as follows: Shares Available for Grant (1) Balances, December 31, 2014 13,439,432 Additional shares available for grant (2) 5,600,000 Performance shares granted (3) (1,709,336 ) Performance shares forfeited 352,930 Restricted stock units granted (5,050,548 ) Restricted stock units forfeited 1,291,177 Options granted — Options forfeited 10,193 Options expired 8,480 Balances, December 31, 2015 13,942,328 (1) For purpose of above table, shares are counted on a fungible basis (i.e., at a higher multiplier than one-for-one) for full value award activity. (2) Approved by stockholders on May 27, 2015. (3) Includes 131,212 additional shares (202,066 shares applying the applicable fungible ratio) resulting from above target performance. Stock Options Under the terms of the 2004 Plan and the 2011 Plan, options may not be granted at prices lower than fair market value at the date of grant. Options granted expire seven years from the date of grant and are only exercisable upon vesting. The Company settles employee stock option exercises with newly issued common shares. There were no stock options granted in 2015, 2014 and 2013. Activity under the stock option plans for the year ended December 31, 2015 was as follows: Outstanding Options Number of Shares Weighted Avg Exercise Price Weighted Avg Contractual Term (Years) Aggregate Intrinsic Value (in thousands) Balances, December 31, 2014 240,493 $ 11.62 Options granted — — Options exercised (53,219 ) $ 11.65 Options forfeited (10,193 ) $ 11.61 Options expired (8,480 ) $ 11.74 Balances, December 31, 2015 168,601 $ 11.61 3.41 $ 165,685 All stock options granted were fully vested and exercisable as of December 31, 2015. The total pre-tax intrinsic value of options exercised during the years ended December 31, 2015, 2014 and 2013 was $0.1 million, $0.2 million and $0.3 million, respectively. The options outstanding and currently exercisable by exercise price at December 31, 2015 are as follows: Stock Options Outstanding and Exercisable Range of Exercise Price Number Outstanding Weighted Average Remaining Contractual Life (Yrs) Weighted Average Exercise Price $ 0.75 42 4.06 $ 0.75 $ 11.61 168,559 3.41 $ 11.61 168,601 3.41 $ 11.61 As of December 31, 2015 , Performance Shares and Restricted Stock Units The Compensation Committee of the Board of Directors may also grant performance shares and restricted stock units (“RSUs”) under the 2011 Plan to officers, non-employee directors, and certain other employees as a component of the Company’s broad-based equity compensation program. Performance shares represent a commitment by the Company to deliver shares of Polycom common stock at a future point in time, subject to the fulfillment by the Company of pre-defined performance criteria. Such awards will be earned only if performance targets over the performance periods established by or under the direction of the Compensation Committee are met. The number of performance shares subject to vesting is determined at the end of a given performance period. Generally, if the performance criteria is achieved, performance shares will vest over a period of one to three years from the anniversary of the grant date. RSUs are time-based awards that generally vest over a period of one to three years from the date of grant. The Company granted performance shares to certain employees and executives, which contain a market condition based on Total Shareholder Return (“TSR”) and which measure the Company’s relative performance against the NASDAQ Composite Index. Such performance shares will be delivered in common stock at the end of the vesting period based on the Company’s actual performance compared to the target performance criteria and may equal from zero percent (0%) to one hundred fifty percent (150%) of the target award. The fair value of a performance share with a market condition is estimated on the date of award, using a Monte Carlo simulation model to estimate the total return ranking of the Company’s stock among the NASDAQ Composite Index companies over each performance period. The Company also granted RSUs. The fair value of RSUs is based on the closing market price of the Company’s common stock on the date of award. The awards will be delivered in common stock at the end of each vesting period. Stock-based compensation expense for the RSUs is recognized using the graded vesting method. In addition, the Company granted RSUs to non-employee directors. The awards vest quarterly over approximately one year from the date of grant. The fair value of these awards is based on the closing market price of the Company’s common stock on the date of grant. Stock-based compensation expense for these awards is amortized over six months from the date of grant due to voluntary termination provisions contained in the underlying agreements. The following table summarizes the changes in unvested performance shares, RSUs and non-employee director RSUs for 2015: Number of Shares (1) Weighted Average Grant Date Fair Value Unvested shares at December 31, 2014 6,825,691 $ 12.26 Performance shares granted (2) 1,109,959 $ 14.07 Restricted stock units granted (3) 3,279,577 $ 13.49 Performance shares vested and issued (782,210 ) $ 13.81 Restricted stock units vested and issued (2,670,181 ) $ 12.47 Performance shares forfeited (217,108 ) $ 12.54 Restricted stock units forfeited (803,545 ) $ 12.34 Unvested shares at December 31, 2015 6,742,183 $ 12.88 (1) For the purposes of this table, shares are counted on a one-for-one basis, not on a fungible share counting basis. (2) Includes 131,212 additional shares resulting from above target performance. (3) Includes 135,000 restricted stock units granted to non-employee directors. As of December 31, 2015, there was approximately $33.4 million, of total unrecognized compensation cost related to unvested awards, which is expected to be recognized over a weighted-average period of one year. The total fair value of shares vested in 2015, 2014 and 2013 was $44.1 million, $46.1 million, and $44.2 million, respectively. Employee Stock Purchase Plan Under the current Employee Stock Purchase Plan (“ESPP”), the Company can grant stock purchase rights to all eligible employees during a two-year offering period with purchase dates at the end of each six-month purchase period (each January and July). Participants lock in a purchase price per share at the beginning of the offering period upon plan enrollment. If the stock price on any subsequent offering period enrollment date is less than the lock-in price, the ESPP has a reset feature that automatically withdraws and re-enrolls participants into a new two-year offering period. Further, the ESPP permits participants to increase or decrease contribution elections at the end of a purchase period for future purchase periods within the same offering period. Shares are purchased through employees’ payroll deductions, currently up to a maximum of 15% of employees’ compensation, at purchase prices equal to 85% of the lesser of the fair market value of the Company’s common stock at either the date of the employee’s entrance to the offering period or the purchase date. No participant may purchase more than $25,000 worth of common stock in any one calendar year period, or 10,000 shares of common stock on any one purchase date. As of December 31, 2015, there were 9,164,481 shares available to be issued under the ESPP. A total of 2,150,586 shares, 2,944,069 shares, and 2,904,287 shares were purchased in 2015, 2014, and 2013, respectively, at an average per share price of $9.89, $7.55, and $7.41, respectively. During the three months ended September 30, 2015, the Company modified the terms of certain existing awards under its ESPP as a result of the reset feature of the ESPP plan, and incurred a cumulative $7.1 million of incremental expense to be recognized over the vesting term. Approximately $2.3 million of the incremental expense was recognized in 2015. Stock-Based Compensation Expense The following table summarizes stock-based compensation expense recorded and its allocation within the Consolidated Statements of Operations (in thousands): Year Ended December 31, 2015 2014 2013 Cost of product revenues $ 2,917 $ 2,463 $ 2,892 Cost of service revenues 4,711 4,293 5,852 Stock-based compensation expense included in cost of revenues 7,628 6,756 8,744 Sales and marketing 13,187 14,893 26,570 Research and development 9,307 10,299 15,634 General and administrative 15,017 16,012 13,517 Stock-based compensation expense included in operating expenses 37,511 41,204 55,721 Stock-based compensation expense related to employee equity awards and employee stock purchases 45,139 47,960 64,465 Tax benefit 8,171 9,492 11,174 Stock-based compensation expense related to employee equity awards and employee stock purchases, net of tax $ 36,968 $ 38,468 $ 53,291 Stock-based compensation expense is not allocated to segments because it is centrally managed at the corporate level. The estimated fair value per share of employee stock purchase rights granted pursuant to ESPP in 2015, 2014, and 2013 ranged from $2.56 to $4.27, from $2.80 to $4.48, and from $2.60 to $4.57, respectively, and was estimated on the date of grant using the Black-Scholes option valuation model based on the following assumptions: 2015 2014 2013 Expected volatility 28.08-30.73% 26.47-32.18% 42.40-48.89% Risk-free interest rate 0.07-0.68% 0.05-0.47% 0.08-0.35% Expected dividends 0.0% 0.0% 0.0% Expected life (years) 0.49-2.0 0.5-2.0 0.5-2.0 The fair value of employee stock purchase rights is recognized as expense using the graded vesting method. The Company computed its expected volatility assumption based on blended volatility (50% historical volatility and 50% implied volatility). The selection of the blended volatility assumption was based upon the Company’s assessment that blended volatility is more representative of the Company’s future stock price trends as it weighs in the longer term historical volatility with the near term future implied volatility. The risk-free interest rate assumption is based upon published interest rates appropriate for the expected life of the Company’s employee stock purchase rights. The dividend yield assumption is based on the Company’s history of not paying dividends and no future expectations of dividend payouts. The expected life of employee stock purchase rights represents the contractual terms of the underlying program.

Employee Benefit Plan

Employee Benefit Plan	12 Months Ended
	Dec. 31, 2015
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Plan	16. Employee Benefit Plan The Company has a defined contribution benefit plan under Section 401(k) of the Internal Revenue Code (the “Polycom 401(k) Plan”), which covers substantially all U.S. employees. Eligible employees may elect to contribute pre-tax amounts to the Polycom 401(k) Plan, through payroll deductions, subject to certain limitations. The Company does not offer its own stock as an investment option in the Polycom 401(k) Plan. The Company matches in cash 50% of the first 6% of compensation employees contribute to the Polycom 401(k) Plan, up to a certain maximum per participating employee per year. All matching contributions are 100% The Company’s contributions to the Polycom 401(k) Plan totaled approximately $2.7 million, $2.8 million, and $3.0 million in 2015, 2014, and 2013, respectively.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	17. Income Taxes Income tax expense (benefit) consists of the following (in thousands): Year Ended December 31, 2015 2014 2013 Income tax expense from continuing operations Current Federal $ 4,486 $ (2,843 ) $ (953 ) State 360 (235 ) (72 ) Foreign 8,176 8,352 8,604 $ 13,022 $ 5,274 $ 7,579 Deferred Federal $ 202 $ (2,562 ) $ (10,715 ) State 43 (273 ) (818 ) Foreign 2,677 (1,483 ) 285 $ 2,922 $ (4,318 ) $ (11,248 ) Total income tax expense (benefit) from continuing operations $ 15,944 $ 956 $ (3,669 ) Income tax expense from discontinued operations $ — $ — $ 96 Income from continuing operations before income taxes is categorized geographically as follows (in thousands): Year Ended December 31, 2015 2014 2013 United States $ 15,998 $ (2,317 ) $ (17,823 ) Foreign 69,921 45,332 (4,381 ) Total income (loss) from continuing operations before income taxes $ 85,919 $ 43,015 $ (22,204 ) The Company’s tax provision from continuing operations differs from the provision computed using statutory tax rates as follows (in thousands): Year Ended December 31, 2015 2014 2013 Federal tax at statutory rate $ 30,071 $ 15,055 $ (7,771 ) State taxes, net of federal benefit 1,129 (508 ) (1,571 ) Non-deductible share-based compensation expense 1,138 (346 ) 2,900 Foreign income at tax rates different than U.S. rates (17,715 ) (14,025 ) 7,104 Changes in reserves for uncertain tax positions (751 ) (756 ) (2,497 ) Research and development tax credit (1,612 ) (1,898 ) (4,243 ) Domestic production activities deduction — (22 ) (757 ) Non-deductible executive compensation expense 725 778 460 Subpart F income 1,018 679 716 Non-deductible acquisition and divestiture costs 146 (4 ) (355 ) Sale of intellectual property 947 2,115 2,947 Foreign tax credit (625 ) (317 ) (359 ) Other 1,473 205 (243 ) Tax provision (benefit) $ 15,944 $ 956 $ (3,669 ) The tax effects of temporary differences that give rise to the deferred tax assets (liabilities) are presented below (in thousands): December 31, 2015 2014 Property and equipment, net, principally due to difference in depreciation $ 9,154 $ 7,534 Acquired intangibles 4,942 4,490 Inventory 5,824 5,685 Restructuring reserves 7,222 13,722 Deferred revenue 11,852 10,964 Other reserves 21,791 20,400 Share-based compensation 10,616 11,910 Net operating loss and capital loss carryforwards 6,512 2,535 Tax credit carryforwards 25,512 21,237 Deferred tax asset 103,425 98,477 Capitalized research and development costs (560 ) (766 ) Acquired intangibles (1,759 ) (1,843 ) Deferred tax asset before valuation allowance $ 101,106 $ 95,868 Valuation allowance (11,375 ) (3,216 ) Deferred tax asset, net of valuation allowance $ 89,731 $ 92,652 As of December 31, 2015, the Company had approximately $6.3 million in tax effected net operating loss carryforwards, $0.3 million in tax effected capital loss carryforwards and $25.5 million in tax effected credit carryforwards. The net operating loss carryforwards and credits include $1.4 million and $0.1 million, respectively, related to acquisitions and, as a result, are limited in the amount that can be recognized in any one year. The Company provides for U.S. income taxes on the earnings of foreign subsidiaries unless they are considered permanently invested outside of the U.S. At December 31, 2015, the cumulative amount of earnings upon which U.S. income tax has not been provided is approximately $403.8 million. It is not practicable to determine the income tax liability that might be incurred if these earnings were to be repatriated to the U.S. Excess tax benefits associated with stock option exercises are credited to stockholders’ equity. The reduction of income taxes payable resulting from the exercise of employee stock options and other employee stock programs that was credited to stockholders’ equity was approximately $2.7 million for the year ended December 31, 2015. As a result of certain employment and capital investment actions, the Company’s income in certain foreign countries is subject to reduced tax rates. A portion of these tax incentives expired in 2015, and the majority of the remaining tax incentives will expire in 2016, however, the Company intends to reapply for the incentives. The income tax benefit attributable to tax incentives was estimated to be $3.9 million ($0.03 per share) in 2015, of which $2.7 million was based on tax incentives that are set to expire at the end of fiscal 2016. The income tax benefit attributable to tax incentives was estimated to be $3.1 million ($0.02 per share) in 2014, of which approximately $0.2 million was based on tax incentives that expired at the end of fiscal 2015. As of December 31, 2013, the income tax benefits attributable to tax incentives were estimated to be $1.7 million ($1.01 per share). On July 27, 2015, the United States Tax Court (the "Court") issued a taxpayer-favorable opinion with respect to Altera Corporation ("Altera")’s litigation with the Internal Revenue Service (“IRS”). The litigation relates to the treatment of share-based compensation expense in an inter-company cost-sharing arrangement with the taxpayer’s foreign subsidiary for fiscal years 2004 through 2007. In its opinion, the Court accepted Altera’s position of excluding share-based compensation in its cost sharing arrangement and concluded that the related IRS Regulations were invalid. The Tax Court opinion will not be complete until the tax computation is finalized and entered into the Tax Court record. The Tax Court granted the IRS an additional extension of time to submit their tax computation by November 12, 2015. Upon the finalization of the tax computation, the Tax Court opinion became final, and the IRS has a 90 day period to appeal. If the IRS appeals, it could take two to three years for the litigation to be resolved. The Company is currently unable to predict if the IRS will appeal the opinion and the outcome of any such appeal. As such, no adjustment to the consolidated financial statement is recorded at this time. The Company is monitoring this case for any material impact to the Consolidated Financial Statements and its potential favorable implications to the Company’s cost-sharing arrangement. In 2015, 2014 and 2013, the Company recorded reserve reductions of $1.9 million, $0.9 million, and $2.4 million, respectively, all of which were due to the expiration of statutes of limitation in both the U.S and foreign jurisdictions. The aggregate changes in the balance of the Company’s gross unrecognized tax benefits were as follows for the periods indicated (in thousands): December 31, 2015 2014 2013 Beginning balance $ 21,642 $ 22,012 $ 23,049 Additions based on tax positions taken during the current period 441 531 1,414 Reductions related to a lapse of applicable statue of limitations (1,956 ) (901 ) (2,451 ) Ending balance $ 20,127 $ 21,642 $ 22,012 The unrecognized tax benefits would affect income tax expense if recognized. The Company’s practice is to recognize interest and/or penalties related to income tax matters in income tax expense. As of December 31, 2015 and December 31, 2014, the Company had approximately $1.9 million and $1.6 million, respectively, of accrued interest and penalties related to uncertain tax positions. By the end of 2016, uncertain tax positions may be reduced as a result of a lapse of the applicable statutes of limitations or the resolutions of ongoing audits in various jurisdictions. The Company anticipates that the reduction in 2016 will approximate $1.3 million and the reserve releases would be recorded as adjustments to tax expense in the period released. The Company files income tax returns in the U.S. federal jurisdiction and various states and foreign jurisdictions. The Company is no longer subject to U.S. federal and state income tax examinations by tax authorities for years prior to 2012. Foreign income tax matters for most foreign jurisdictions have been concluded for years through 2009, except India which is concluded through March 2007, and Brazil, China, Israel, and Singapore which have been concluded for years through 2010 and France which has been concluded for years through 2011.

Net Income (Loss) Per Share

Net Income (Loss) Per Share	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Net Income (Loss) Per Share	18. Net Income (Loss) Per Share The following table sets forth the computation of basic and diluted net income (loss) per share (in thousands, except per-share amounts): Year Ended December 31, 2015 2014 2013 Numerator Net income (loss) from continuing operations $ 69,975 $ 42,059 $ (18,535 ) Gain from sale of discontinued operations, net of taxes — — 459 Net income (loss) $ 69,975 $ 42,059 $ (18,076 ) Denominator Weighted average shares outstanding, basic 133,581 136,801 167,272 Effect of dilutive potential common shares 3,813 5,204 — Weighted average shares outstanding, diluted 137,394 142,005 167,272 Basic net income (loss) per share Net income (loss) per share from continuing operations $ 0.52 $ 0.31 $ (0.11 ) Gain per share from sale of discontinued operations, net of taxes — — — Basic net income (loss) per share $ 0.52 $ 0.31 $ (0.11 ) Diluted net income (loss) per share Net income (loss) per share from continuing operations $ 0.51 $ 0.30 $ (0.11 ) Gain per share from sale of discontinued operations, net of taxes — — — Diluted net income (loss) per share $ 0.51 $ 0.30 $ (0.11 ) Antidilutive employee stock-based awards, excluded 449 213 5,045 The basic and diluted weighted average shares outstanding for 2013 reflected the 27.4 million shares of common stock repurchased and retired in October 2013 pursuant to the Tender Offer program and the initial delivery of 8.0 million shares of common stock repurchased and retired in December 2013 pursuant to the ASR agreements. The basic and diluted weighted average shares outstanding for 2014 reflected the additional 1.5 million shares that the Company received in June 2014 upon settlement of the ASR agreements. Diluted shares outstanding include the dilutive effect of in-the-money employee equity share options, unvested performance shares, restricted stock units, and stock purchase rights under the ESPP. The dilutive effect of such equity awards is calculated based on the average share price for each fiscal period using the treasury stock method. Potentially dilutive shares are excluded from the computation of diluted net income (loss) per share when their effect is antidilutive.

Business Segment Information

Business Segment Information	12 Months Ended
	Dec. 31, 2015
Segment Reporting [Abstract]
Business Segment Information	19. Business Segment Information The Company conducts its business globally and is managed geographically in three segments: (1) Americas, which consists of North America and CALA reporting units; (2) EMEA; and (3) APAC. The segments are determined in accordance with how management views and evaluates the Company’s business and allocates its resources, and are based on the criteria as outlined in the authoritative guidance. Segment Revenue and Profit Segment revenues consist of product and service revenues. Product revenues are attributed to a segment based on the ordering location of the customer. For internal reporting purposes and determination of segment contribution margins, geographic segment product revenues may differ slightly from actual geographic revenues due to internal revenue allocations between the Company’s segments. Service revenues are generally attributed to a segment based on the end-user’s location where services are performed. A significant portion of each segment’s expenses arises from shared services and infrastructure that Polycom has historically allocated to the segments in order to realize economies of scale and to use resources efficiently. Segment contribution margin includes all geographic segment revenues less the related cost of sales and direct revenues and marketing expenses. Cost of revenues consists of the standard cost of revenues and does not include items such as warranty expense, royalties, and the allocation of overhead expenses, including facilities and IT costs, as well as stock-based compensation costs and amortization of purchased intangible assets. Management allocates some infrastructure costs, such as facilities and IT costs, in determining segment contribution margins. Contribution margin is used, in part, to evaluate the performance of, and allocate resources to, each of the segments. Certain operating expenses are not allocated to segments because they are separately managed at the corporate level. These unallocated costs include corporate manufacturing costs, sales and marketing costs other than direct sales and marketing expenses, research and development expenses, general and administrative costs, such as legal and accounting, stock-based compensation costs, transaction-related costs, amortization of purchased intangibles, restructuring costs and interest and other income (expense), net. Segment Data The results of the reportable segments are derived directly from Polycom’s management reporting system. Management measures the performance of each segment based on several metrics, including contribution margin as defined above. Asset data, with the exception of gross accounts receivable, is not reviewed by management at the segment level. Financial information for each reportable geographical segment as of and for the fiscal years ended December 31, 2015, 2014, and 2013, based on the Company’s internal management system and as utilized by the Company’s Chief Operating Decision Maker (“CODM”), its Chief Executive Officer, is as follows (in thousands): Americas EMEA APAC Total 2015: Revenue $ 617,211 $ 336,894 $ 313,120 $ 1,267,225 % of total revenue 49 % 26 % 25 % 100 % Contribution margin $ 236,482 $ 141,744 $ 147,512 $ 525,738 % of segment revenue 38 % 42 % 47 % 41 % 2014: Revenue $ 662,533 $ 349,821 $ 332,800 $ 1,345,154 % of total revenue 49 % 26 % 25 % 100 % Contribution margin $ 270,265 $ 150,426 $ 140,365 $ 561,056 % of segment revenue 41 % 43 % 42 % 42 % 2013: Revenue $ 694,522 $ 338,035 $ 335,832 $ 1,368,389 % of total revenue 50 % 25 % 25 % 100 % Contribution margin $ 270,786 $ 142,686 $ 136,462 $ 549,934 % of segment revenue 39 % 42 % 41 % 40 % At December 31, 2015: Gross accounts receivable $ 97,742 $ 78,726 $ 66,443 $ 242,911 % of total gross accounts receivable 40 % 33 % 27 % 100 % At December 31, 2014: Gross accounts receivable $ 88,316 $ 62,540 $ 63,808 $ 214,664 % of total gross accounts receivable 41 % 29 % 30 % 100 % * The United States and China, individually, accounted for more than 10% of the Company’s revenues in 2015, 2014 and 2013. Net revenues in the United States were $528.0 million, $565.9 million, and $589.6 million for the years ended December 31, 2015, 2014, and 2013, respectively. Net revenues in China were $143.4 million, $144.7 million, and $147.3 million for the years ended December 31, 2015, 2014 and 2013, respectively. During 2015, 2014, and 2013, one customer, ScanSource, accounted for 20%, 17%, and 16%, respectively, of the Company’s revenues. At December 31, 2015, 2014, ScanSource accounted for 20% and 19%, respectively, of total gross accounts receivable. The following tables set forth the reconciliation of segment information to Polycom consolidated totals (in thousands): Year Ended December 31, 2015 2014 2013 Segment contribution margin $ 525,738 $ 561,056 $ 549,934 Corporate and unallocated costs (370,368 ) (409,700 ) (430,471 ) Stock-based compensation (45,139 ) (47,960 ) (64,465 ) Effect of stock-based compensation cost on warranty expense (336 ) (494 ) (547 ) Amortization of purchased intangibles (10,451 ) (12,816 ) (19,750 ) Restructuring costs (11,096 ) (40,347 ) (48,470 ) Litigation reserves and payments — (3,130 ) — Transaction-related costs (574 ) (156 ) (3,424 ) Interest and other income (expense), net (1,855 ) (3,438 ) (5,011 ) Income (loss) from continuing operations before provision for (benefit from) income taxes $ 85,919 $ 43,015 $ (22,204 ) The following table sets forth the Company’s revenues by groups of similar products and services as follows (in thousands): Year Ended December 31, 2015 2014 2013 Revenues: UC group systems $ 772,744 $ 868,311 $ 904,923 UC personal devices 267,249 236,781 219,103 UC platform 227,232 240,062 244,363 Total $ 1,267,225 $ 1,345,154 $ 1,368,389 The Company’s fixed assets, net of accumulated depreciation, are located in the following geographical areas (in thousands): December 31, 2015 2014 United States $ 77,082 $ 78,692 EMEA 10,149 11,254 APAC 13,486 17,663 Other 1,136 1,586 Total $ 101,853 $ 109,195 No single country outside of the United States has more than 10% of total net fixed assets as of December 31, 2015 and 2014.

Valuation And Qualifying Accoun

Valuation And Qualifying Accounts	12 Months Ended
	Dec. 31, 2015
Valuation And Qualifying Accounts [Abstract]
Valuation And Qualifying Accounts	FINANCIAL STATEMENT SCHEDULE—SCHEDULE II POLYCOM, INC. VALUATION AND QUALIFYING ACCOUNTS (in thousands) Balance at Beginning of Year Additions Deductions Balance at End of Year Year ended December 31, 2015 Allowance for doubtful accounts $ 3,040 $ — $ (17 ) $ 3,023 Sales returns and allowances $ 37,350 $ 135,395 $ (124,378 ) $ 48,367 Income tax valuation allowances $ 3,216 $ 8,620 $ (461 ) $ 11,375 Year ended December 31, 2014 Allowance for doubtful accounts $ 2,827 $ 600 $ (387 ) $ 3,040 Sales returns and allowances $ 34,654 $ 86,649 $ (83,953 ) $ 37,350 Income tax valuation allowances $ 3,359 $ — $ (143 ) $ 3,216 Year ended December 31, 2013 Allowance for doubtful accounts $ 2,921 $ — $ (94 ) $ 2,827 Sales returns and allowances $ 37,422 $ 93,101 $ (95,869 ) $ 34,654 Income tax valuation allowances $ 3,161 $ 460 $ (262 ) $ 3,359

Description of Business and B28

Description of Business and Basis of Presentation (Policies)	12 Months Ended
	Dec. 31, 2015
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Description of Business	Description of Business Polycom, Inc. (“Polycom” or “the Company”) is a leading global provider of high-quality, easy-to-use collaboration solutions that enable enterprise, government, education and healthcare customers to more effectively collaborate over distance, time zones and organizational boundaries. The Company’s solutions are built on architectures that enable unified video, voice and content communications. Polycom was incorporated in the state of Delaware in December 1990 and trades on the NASDAQ Global Select Market under the ticker symbol “PLCM”.
Principles of Accounting and Consolidation	Principles of Accounting and Consolidation These Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“US GAAP”). The Consolidated Financial Statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the Company’s Consolidated Financial Statements and accompanying Notes to Consolidated Financial Statements. Actual results could differ from those estimates.

Summary of Significant Accoun29

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers all highly liquid investments with original maturities of three months or less at the time of purchase to be cash equivalents.
Investments	Investments Investments are classified as short-term or long-term based on their remaining maturities. The Company’s short-term and long-term investments as of December 31, 2015 are comprised of U.S. and non-U.S. government securities, U.S. government agency securities and corporate debt securities. All investments are held in the Company’s name at a limited number of major financial institutions. At December 31, 2015 and 2014, all of the Company’s investments were classified as available-for-sale and unrealized gains and losses on investments are recorded as a separate component of “Accumulated other comprehensive (loss) income” in the Consolidated Statements of Stockholders’ Equity. The Company reviews the individual securities in its portfolio to determine whether a decline in a security’s fair value below the amortized cost basis is other-than-temporary. If the decline in fair value is considered to be other-than-temporary, the cost basis of the individual security is written down to its fair value as a new cost basis. If the investments are sold at a loss or are considered to have other-than-temporarily declined in value, the amount of the loss or write-down is accounted for as a realized loss and included in earnings. The specific identification method is used to determine the cost of securities disposed of, with realized gains and losses reflected in “Interest and other income (expense), net” in the Consolidated Statements of Operations.
Allowance for Doubtful Accounts	Allowance for Doubtful Accounts The Company maintains an allowance for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. The Company regularly performs credit evaluations of its customers' financial condition and considers factors such as historical experience, credit quality, age of the accounts receivable balances, and geographic or country-specific risks and economic conditions that may affect a customer's ability to pay. The allowance for doubtful accounts is reviewed quarterly and adjusted if necessary based on the Company's assessment of its customer’s ability to pay
Inventories	Inventories Inventories are valued at the lower of cost or market with cost computed on a first-in, first-out (FIFO) basis. Consideration is given to obsolescence, excessive levels, deterioration and other factors in evaluating net realizable value. The Company records write-downs for excess and obsolete inventory equal to the difference between the carrying value of inventory and the estimated future selling price based upon assumptions about future product life-cycles, product demand and market conditions. At the point of the loss recognition, a new, lower-cost basis for that inventory is established, and subsequent changes in facts and circumstances do not result in the restoration or increase in that newly established cost basis.
Property and Equipment	Property and Equipment Property and equipment are stated at cost less accumulated depreciation and amortization. Depreciation is provided using the straight-line method over the estimated useful lives of the assets, generally from one to seven years. Amortization of leasehold improvements is computed using the straight-line method over the shorter of the remaining lease term or the estimated useful lives of the related assets, typically three to thirteen years. Disposals of capital equipment are recorded by removing the costs and accumulated depreciation from the accounts and gains or losses on disposals are included in “Interest and other income (expense), net” in the Consolidated Statements of Operations.
Goodwill	Goodwill Goodwill represents the excess of the purchase price over the fair value of net tangible and intangible assets acquired in a business combination. Goodwill is not amortized but is regularly reviewed for potential impairment. The Company reviews goodwill for impairment annually during the fourth quarter of each calendar year, or whenever events or changes in circumstances indicate the carrying amount of goodwill may not be recoverable. The Company performs an initial qualitative assessment to determine whether it is more likely than not that the fair value of the reporting unit is less than its carrying amount. If, after the initial qualitative assessment, the Company determines that it is more likely than not that the fair value of the reporting unit exceeds its carrying value and there is no indication of impairment, no further testing is performed; however, if the Company concludes otherwise
Long-Lived Assets	Long-Lived Assets Purchased intangible assets with finite lives are amortized using the straight-line method over the estimated economic lives of the assets, which range from several months to six years. Purchased intangible assets determined to have indefinite useful lives are not amortized. Long-lived assets, including purchased intangible assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. Determination of recoverability is based on an estimate of undiscounted future cash flows resulting from the use of the asset or group of assets and their eventual disposition. The Company periodically assesses the remaining useful lives of long-lived assets. Measurement of an impairment loss for long-lived assets that management expects to hold and use is based on the estimated fair value of the asset. Long-lived assets to be disposed of are reported at the lower of carrying amount or estimated fair value less costs to sell.
Warranty	Warranty The Company provides for the estimated costs of product warranties at the time revenue is recognized. The specific terms and conditions of those warranties vary depending upon the product sold. In the case of hardware products, warranties generally start from the delivery date and continue for one year. Software products generally carry a 90-day warranty from the date of purchase. The Company’s liability under warranties on software products is to provide a corrected copy of any portion of the software found not to be in substantial compliance with the agreed upon specifications. Factors that affect the Company’s warranty obligation include product failure rates, material usage and service delivery costs incurred in correcting product failures. The Company assesses the adequacy of the recorded warranty liabilities every quarter and makes adjustments to the liability if necessary.
Deferred Services Revenue	Deferred Services Revenue The Company offers maintenance contracts for sale on most of its products which allow for customers to receive maintenance support in addition to the contractual product warranty. The Company also provides managed services to its customers under contractual arrangements. The Company recognizes the maintenance and managed services revenues from these contracts over the life of the service contract.
Revenue Recognition	Revenue Recognition The Company recognizes revenue when persuasive evidence of an arrangement exists, title and risk of loss have transferred, product payment is not contingent upon performance of installation or service obligations, the price is fixed or determinable, and collectability is reasonably assured. Additionally, the Company recognizes maintenance service revenues on its hardware and software products ratably over the service periods of one to five years, and other services upon the completion of implementation or professional services provided. Most of the Company’s products are integrated with software that is essential to the functionality of the equipment. Additionally, the Company provides unspecified software upgrades and enhancements related to most of these products through maintenance contracts. A multiple-element arrangement includes the sale of one or more tangible product offerings with one or more associated services offerings, each of which are individually considered separate units of accounting. The Company allocates revenue to each element in a multiple-element arrangement based upon the relative selling price of each deliverable. When applying the relative selling price method, the Company determines the selling price for each deliverable using vendor specific objective evidence (“VSOE”) of selling price, if it exists, or third party evidence (“TPE”) of selling price. If neither VSOE nor TPE of selling price exist for a deliverable, the Company uses its best estimate of selling price (“ESP”) for that deliverable. Revenue allocated to each element is then recognized when the other revenue recognition criteria are met for each element. VSOE is established based on the Company’s standard pricing and discounting practices for the specific product or service when sold separately. In determining VSOE, the Company requires that a substantial majority of the selling prices for a product or service fall within a reasonably narrow pricing range. When VSOE cannot be established, the Company attempts to establish the selling price of each element based on TPE. TPE is determined based on competitor prices for similar deliverables when sold separately. When the Company is unable to establish the selling price using VSOE or TPE, the Company uses ESP in its allocation of revenue for the arrangement. ESP represents the price at which the Company would transact a sale if the element were sold on a stand-alone basis. The Company determines ESP for a product by considering multiple factors including, but not limited to, geographies, market conditions, competitive landscape, and pricing practices. The determination of ESP is made based on review of historical sales price, taking into consideration the Company’s go-to-market strategy. Generally, the Company uses historical net selling prices to establish ESP. The Company regularly reviews its basis for establishing VSOE, TPE and ESP. Sales Returns, Channel Partner Programs and Incentives The Company’s contracts generally do not provide for a right of return on any of its products. However, some of the contracts with our distributors contain stock rotation rights. The Company records an estimate of future returns based upon these contractual rights and its historical returns experience. The Company records estimated reductions to revenues for channel partner programs and incentive offerings including special pricing agreements, promotions and other volume-based incentives. The Company also accrues for joint marketing funds as a marketing expense if the Company receives a separable and identifiable benefit in exchange and can reasonably estimate the fair value of the identifiable benefit received; otherwise, it is recorded as a reduction to revenues.
Research and Development and Software Development Costs	Research and Development and Software Development Costs The Company expenses research and development costs as incurred. Software development costs incurred prior to the establishment of technological feasibility are included in research and development costs as incurred. Eligible and material software development costs are capitalized upon the establishment of technological feasibility and before the general availability of such software products, including direct labor and related overhead costs, as well as stock-based compensation. The Company has defined technological feasibility as the establishment of a working model, which typically occurs when beta testing commences. The Company capitalized approximately $5.6 million, $5.1 million, and $2.4 million of development costs in 2015, 2014, and 2013, respectively, for software products to be marketed or sold to customers. The capitalized costs are included in “Other assets” in the Company’s Consolidated Balance Sheets and are being amortized on a product-by-product basis using the straight-line method over the estimated product life, generally three years, or on the ratio of current revenues to total projected product revenues, whichever is greater. Management believes that the capitalized software costs will be recoverable from future gross profits generated by these products.
Advertising	Advertising The Company expenses advertising costs as incurred. Advertising expense for the years ended December 31, 2015 and 2014 was $13.6 million for both years and $14.9 million for the year ended December 31, 2013.
Income Taxes	Income Taxes The Company accounts for income taxes under the liability method, which recognizes deferred tax assets and liabilities based on the difference between the financial statement and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to affect taxable income. Valuation allowances are established to reduce deferred tax assets when, based on available objective evidence, it is more likely than not that the benefit of such assets will not be realized. The Company recognizes and measures benefits for uncertain tax positions using a two-step approach. The first step is to evaluate the tax position taken or expected to be taken in a tax return by determining if the weight of available evidence indicates that it is more likely than not that the tax position will be sustained upon audit, including resolution of any related appeals or litigation processes. For tax positions that are more likely than not to be sustained upon audit, the second step is to measure the tax benefit as the largest amount that is more than 50% likely to be realized upon settlement. Significant judgment is required to evaluate uncertain tax positions. The Company evaluates its uncertain tax positions on a quarterly basis. Evaluations are based upon a number of factors, including changes in facts or circumstances, changes in tax law, correspondence with tax authorities during the course of audits and effective settlement of audit issues. Changes in the recognition or measurement of uncertain tax positions could result in material increases or decreases in income tax expense in the period in which the change is made, which could have a material impact on the Company’s effective tax rate and operating results. The Company recognizes interest and/or penalties related to income tax matters in income tax expense.
Foreign Currency Translation	Foreign Currency Translation Assets and liabilities of non-U.S subsidiaries, where the local currency is the functional currency, are translated to U.S. dollars at exchange rates in effect at the balance sheet date and income and expense accounts are translated at average exchange rates in effect during the period. The resulting translation adjustments are directly recorded to a separate component of “Accumulated other comprehensive (loss) income” on the Consolidated Balance Sheets. Foreign exchange transaction gains and losses from the remeasurement of non-functional currency denominated assets and liabilities are included in the Company’s Consolidated Statements of Operations as part of “Interest and other income (expense), net”. The following table sets forth the change of foreign currency translation adjustments during each reporting period and the balances as of December 31 (in thousands): 2015 2014 2013 Beginning balance $ 2,797 $ 4,219 $ 3,180 Foreign currency translation adjustments (3,744 ) (1,422 ) 1,039 Ending balance $ (947 ) $ 2,797 $ 4,219
Derivative Instruments	Derivative Instruments The accounting for changes in the fair value of a derivative depends on the intended use of the derivative and the resulting designation. For a derivative instrument designated and qualifying as a cash flow hedge, the effective portion of the derivative’s gain or loss is initially reported as a separate component of “Accumulated other comprehensive income” in the Consolidated Statements of Stockholders’ Equity and is subsequently reclassified into earnings when the hedged exposure affects earnings. The excluded and ineffective portions of the gain or loss are reported in “Interest and other income (expense), net” on the Consolidated Statements of Operations, immediately. For derivative instruments that are not designated as cash flow hedges, changes in fair value are recognized in “Interest and other income (expense), net” on the Consolidated Statements of Operations in the period of change. The Company does not hold or issue derivative financial instruments for speculative trading purposes. The Company enters into derivatives only with counterparties that are among the largest U.S. banks, ranked by assets, in order to minimize its credit risk.
Share Repurchase and Treasury Shares	Share Repurchase and Treasury Shares The Company periodically repurchases shares in the market at fair value. Treasury shares repurchased are recorded at cost as a reduction to Stockholders' equity. On retirement of the repurchased shares, Common stock is reduced by an amount equal to the number of shares being retired multiplied by the par value. The excess of the cost of treasury stock that is retired over its par value is allocated as a reduction between Accumulated deficit and Additional paid-in capital.
Net Income Per Share	Net Income Per Share Basic net income per share is computed by dividing net income by the weighted average number of common shares outstanding for the period. Diluted net income per share reflects the additional dilution from potential issuance of common stock, such as stock issuable pursuant to the exercise of stock options and unvested restricted stock units and performance shares. Potentially dilutive shares are excluded from the computation of diluted net income per share when their effect is antidilutive.
Fair Value Measurements	Fair Value Measurements The Company has certain financial assets and liabilities recorded at fair value which have been classified as Level 1, 2 or 3 within the fair value hierarchy. Fair values determined by Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access. Fair values determined by Level 2 inputs utilize data points that are observable such as quoted prices for similar assets in active markets, or identical or similar assets in inactive markets, interest rates and yield curves. Fair values determined by Level 3 inputs utilize unobservable data points for the asset or liability. On a recurring basis, the Company measures certain financial assets and liabilities at fair value, including its marketable securities and foreign currency contracts. The Company’s cash equivalents and investment instruments are classified within Level 1 or Level 2 of the fair value hierarchy because they are valued using inputs such as quoted market prices, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency. The types of instruments valued based on quoted market prices for identical assets in active markets include money market funds. Such instruments are generally classified within Level 1 of the fair value hierarchy. The types of instruments valued based on other observable inputs include U.S. Treasury, other government agencies, and corporate debt securities. Such instruments are generally classified within Level 2 of the fair value hierarchy. Level 2 instruments are priced using quoted market prices for similar instruments or nonbinding market prices that are corroborated by observable market data. The principal market where the Company executes its foreign currency contracts is the retail market in an over-the-counter environment with a relatively high level of price transparency. The Company’s foreign currency contracts valuation inputs are based on quoted prices and quoted pricing intervals from public data sources such as spot rates, interest rate differentials and credit default rates, which do not involve management judgment. These contracts are typically classified within Level 2 of the fair value hierarchy. In addition, the Company has facilities-related liabilities related to restructuring which were calculated based on the discounted future lease payments less sublease assumptions. This non-recurring fair value measurement is classified as a Level 3 measurement under ASC 820. The key assumptions used in the valuation model include discount rates, cash flow projections and estimated sublease income. These assumptions involve significant judgment, and are based on management’s estimate of current and forecasted market conditions and are sensitive and susceptible to change. The carrying amounts reflected in the Consolidated Balance Sheets for cash and cash equivalents, accounts receivable, accounts payable, and other current accrued liabilities approximate fair value due to their short-term maturities.
Stock-Based Compensation	Stock-Based Compensation The Company’s stock-based compensation programs consist of grants of stock-based awards to employees and non-employee directors, including stock options, restricted stock units and performance shares, as well as purchase rights pursuant to the Company’s Employee Stock Purchase Plan (“ESPP”). Stock-based compensation expense based on the estimated fair value of these awards is charged to operations over the requisite service period, which is generally the vesting period, including the effect of forfeitures. The fair value of stock option and ESPP awards is estimated at the grant date using the Black-Scholes option valuation model. The fair value of restricted stock units is based on the market value of the Company’s common stock on the date of grant. The fair value of a performance share with a market condition is estimated on the date of award, using a Monte Carlo simulation model to estimate the total return ranking of the Company’s stock in relation to the target index of peer companies over each performance period. Stock-based compensation cost on performance shares with a market condition is not adjusted for subsequent changes regardless of the level of ultimate vesting.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In January 2016, the Financial Accounting Standards Board (“FASB”) issued an accounting standard update which amends the current guidance related to accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. The standard is effective for fiscal years beginning after December 15, 2017, and interim periods within fiscal years beginning after December 15, 2017. The Company is evaluating the impact of adopting this standard on its Consolidated Financial Statements and disclosures. In November 2015, the FASB issued an accounting standard update which simplifies presentation of deferred income taxes in the balance sheet by requiring deferred tax liabilities and assets to be classified as noncurrent in lieu of current requirement of separating them into current and noncurrent classification. The standard is effective for fiscal years beginning after December 15, 2016, and interim periods within those annual periods. Early adoption is permitted. The standard can be applied either prospectively to all deferred tax liabilities and assets or retrospectively to all periods presented. The Company prospectively adopted the guidance in 2015 and it reclassified current deferred tax liabilities and assets to noncurrent on its December 31, 2015 Consolidated Balance Sheets. In April 2015, the FASB issued an accounting standard update which provides guidance on whether a cloud computing arrangement includes a software license to a customer of such an arrangement. If a cloud computing arrangement includes a software license, a customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses, otherwise the customer should account for the arrangement as a service contract. The standard is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The standard can be applied prospectively to all arrangements entered into or materially modified after the effective date, or retrospectively. The Company prospectively adopted the guidance in 2015, and such adoption did not have a material impact on the Company’s Consolidated Financial Statements. In April 2015, the FASB issued an accounting standard update which requires an entity to present debt issuance costs in the balance sheet as a direct deduction from the related debt liability rather than as an asset. Amortization of the costs will continue to be reported as interest expense. The standard is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The standard will be applied retrospectively to each prior period presented. The Company adopted the guidance in 2015, and it reclassified approximately $2.0 million of debt issuance costs related to the term loan as a deduction to the carrying amounts on its 2014 Consolidated Balance Sheets. In May 2014, the FASB an accounting standard update which promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services Companies may use either a full retrospective or a modified retrospective approach to adopt the standard. The Company is evaluating the potential effects of the adoption of this standard on its Consolidated Financial Statements.

Summary of Significant Accoun30

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Change of Foreign Currency Translation Adjustments	The following table sets forth the change of foreign currency translation adjustments during each reporting period and the balances as of December 31 (in thousands): 2015 2014 2013 Beginning balance $ 2,797 $ 4,219 $ 3,180 Foreign currency translation adjustments (3,744 ) (1,422 ) 1,039 Ending balance $ (947 ) $ 2,797 $ 4,219

Goodwill, Purchased Intangibl31

Goodwill, Purchased Intangibles, and Software Development Costs (Tables)	12 Months Ended
	Dec. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Goodwill by Segment	The following table summarizes the changes in carrying amount of goodwill in each of the Company’s segments for the periods presented (in thousands): Segments Americas EMEA APAC Total Balance at December 31, 2013 $ 308,159 $ 101,882 $ 149,419 $ 559,460 Foreign currency translation — — (229 ) (229 ) Balance at December 31, 2014 308,159 101,882 149,190 559,231 Foreign currency translation — — (456 ) (456 ) Balance at December 31, 2015 $ 308,159 $ 101,882 $ 148,734 $ 558,775
Schedule of Purchased Intangible Assets by Major Class	The following table sets forth details of the Company’s total purchased intangible assets and capitalized software development costs for products to be sold as of the following periods (in thousands): December 31, 2015 December 31, 2014 Gross Value Accumulated Amortization & Net Value Gross Value Accumulated Amortization & Impairment Net Value Core and developed technology $ 81,178 $ (80,945 ) $ 233 $ 81,178 $ (79,986 ) $ 1,192 Customer and partner relationships 79,525 (66,742 ) 12,783 79,525 (57,983 ) 21,542 Non-compete agreements 1,800 (1,700 ) 100 1,800 (1,100 ) 700 Trade name 3,400 (3,369 ) 31 3,400 (3,229 ) 171 Other 4,462 (4,462 ) — 4,462 (4,418 ) 44 Finite-lived intangible assets 170,365 (157,218 ) 13,147 170,365 (146,716 ) 23,649 Indefinite-lived trade name 918 — 918 918 — 918 Total acquired intangible assets $ 171,283 $ (157,218 ) $ 14,065 $ 171,283 $ (146,716 ) $ 24,567 Capitalized software development costs for products to be sold $ 12,993 $ (5,002 ) $ 7,991 $ 7,416 $ (1,900 ) $ 5,516
Summary of Amortization Expenses	The following table summarizes amortization expense recorded in the following periods (in thousands): Year Ended December 31, 2015 2014 2013 Amortization of purchased intangibles in revenues $ 51 $ 75 $ 75 Amortization of purchased intangibles in cost of product revenues 956 3,035 9,361 Amortization of purchased intangibles in operating expenses 9,495 9,781 10,389 Total amortization expenses of purchased intangibles $ 10,502 $ 12,891 $ 19,825
Estimated Future Amortization Expense of Purchased Intangible Assets	The estimated future amortization expense of purchased intangible assets as of December 31, 2015 is as follows (in thousands): Year ending December 31, Amount 2016 $ 8,478 2017 4,669 2018 — 2019 — 2020 — Total $ 13,147

Balance Sheet Details (Tables)

Balance Sheet Details (Tables)	12 Months Ended
	Dec. 31, 2015
Balance Sheet Related Disclosures [Abstract]
Schedule of Trade Receivables	Trade receivables, net, consist of the following (in thousands): December 31, 2015 2014 Gross trade receivables $ 242,911 $ 214,664 Returns and other reserves (52,000 ) (42,224 ) Allowance for doubtful accounts (3,023 ) (3,040 ) Total $ 187,888 $ 169,400
Schedule of Inventories	Inventories consist of the following (in thousands): December 31, 2015 2014 Raw materials $ 824 $ 1,496 Work in process 117 545 Finished goods 88,451 98,287 Total $ 89,392 $ 100,328
Prepaid Expenses and Other Current Assets	Prepaid expenses and other current assets consist of the following (in thousands): December 31, 2015 2014 Non-trade receivables $ 7,689 $ 6,547 Prepaid expenses 33,174 37,385 Derivative assets 10,396 14,342 Other current assets 1,593 2,265 Total $ 52,852 $ 60,539
Schedule of Property and Equipment	Property and equipment, net, consist of the following (in thousands): December 31, Estimated 2015 2014 Computer equipment and software 3 to 5 years $ 315,828 $ 294,724 Equipment, furniture and fixtures 1 to 7 years 123,124 115,226 Tooling equipment 3 years 18,123 16,325 Leasehold improvements 3 to 13 years 59,962 59,663 Total gross property and equipment 517,037 485,938 Less: Accumulated depreciation and amortization (415,184 ) (376,743 ) Total $ 101,853 $ 109,195
Schedule of Deferred Revenue	Deferred revenue consist of the following (in thousands): December 31, 2015 2014 Short-term: Service $ 165,594 $ 171,355 Product — 94 License 4,965 2,083 Total $ 170,559 $ 173,532 Long-term: Service $ 82,598 $ 85,925 License 3,593 3,441 Total $ 86,191 $ 89,366
Changes In Deferred Service Revenue	Changes in the deferred service revenue in 2015 and 2014 are as follows (in thousands): Year Ended December 31, 2015 2014 Balance at beginning of period $ 257,280 $ 253,793 Additions to deferred service revenue 331,876 347,896 Amortization of deferred service revenue (340,964 ) (344,409 ) Balance at end of period $ 248,192 $ 257,280
Changes In Deferred License Revenue	Changes in the deferred license revenue in 2015 and 2014 are as follows (in thousands): Year Ended December 31, 2015 2014 Balance at beginning of period $ 5,524 $ 5,775 Additions to deferred license revenue 5,706 1,345 Amortization of deferred license revenue (2,672 ) (1,596 ) Balance at end of period $ 8,558 $ 5,524
Schedule of Other Current Accrued Liabilities	Other current accrued liabilities consist of the following (in thousands): December 31, 2015 2014 Accrued expenses $ 25,179 $ 27,523 Accrued co-op expenses 2,670 4,102 Restructuring reserves 16,187 12,207 Warranty obligations 10,172 11,613 Derivative liabilities 6,031 8,175 Employee stock purchase plan withholdings 9,668 10,658 Other accrued liabilities 15,188 11,915 Total $ 85,095 $ 86,193
Changes in Warranty Obligation	Changes in the warranty obligations in 2015 and 2014 are as follows (in thousands): Year Ended December 31, 2015 214 Balance at beginning of period $ 11,613 $ 9,475 Accruals for warranties issued during the period 12,444 16,753 Charges against warranty reserve during the period (13,885 ) (14,615 ) Balance at end of period $ 10,172 $ 11,613

Restructuring Costs (Tables)

Restructuring Costs (Tables)	12 Months Ended
	Dec. 31, 2015
Restructuring And Related Activities [Abstract]
Summary of Activity of Restructuring Reserves	The following table summarizes the activity of the Company’s restructuring reserves (in thousands): Severance/Other Facilities Other Total Balance at December 31, 2012 $ 1,362 $ 7,464 $ — $ 8,826 Additions to the reserve, net 10,185 36,770 2,880 49,835 Interest accretion — 1,461 — 1,461 Non-cash adjustments — (3,547 ) — (3,547 ) Cash payments (10,404 ) (8,362 ) (2,880 ) (21,646 ) Balance at December 31, 2013 1,143 33,786 — 34,929 Additions to the reserve, net 11,755 28,524 — 40,279 Interest accretion — 2,347 — 2,347 Non-cash adjustments — (4,855 ) — (4,855 ) Cash payments (12,234 ) (18,893 ) — (31,127 ) Balance at December 31, 2014 664 40,909 — 41,573 Additions to the reserve, net 13,999 (5,268 ) 801 9,532 Interest accretion — 1,564 — 1,564 Non-cash adjustments — (696 ) — (696 ) Cash payments (6,591 ) (18,054 ) — (24,645 ) Balance at December 31, 2015 $ 8,072 $ 18,455 $ 801 $ 27,328

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Interest Expense Recognized Related to Term Loan	The following table summarizes interest expense recognized related to the Term Loan for the periods presented (in thousands): Year Ended December 31, 2015 2014 2013 Contractual interest expense $ 5,246 $ 4,940 $ 1,605 Amortization of debt issuance costs 532 533 178 Total $ 5,778 $ 5,473 $ 1,783
Future Principal Payments for Long-term Debt Including Current Portion	As of December 31, 2015, future principal payments for long-term debt, including the current portion, are summarized as follows (in thousands): Year Ending December 31, Amount 2016 $ 6,250 2017 6,250 2018 223,438 2019 — 2020 — Thereafter — Total $ 235,938

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2015
Investments Debt And Equity Securities [Abstract]
Short-Term and Long-Term Investments in Debt Securities	In addition, the Company has short-term and long-term investments in debt securities which are summarized as follows (in thousands): Cost Basis Unrealized Gains Unrealized Losses Fair Value Balances at December 31, 2015: Investments-Short-term: U.S. government securities $ 49,036 $ 4 $ (45 ) $ 48,995 U.S. government agency securities 67,723 1 (30 ) 67,694 Non-U.S. government securities 7,303 — (1 ) 7,302 Corporate debt securities 60,290 1 (40 ) 60,251 Total investments - short-term $ 184,352 $ 6 $ (116 ) $ 184,242 Investments-Long-term: U.S. government securities $ 8,058 $ — $ (14 ) $ 8,044 U.S. government agency securities 14,510 — (48 ) 14,462 Corporate debt securities 24,056 2 (80 ) 23,978 Total investments - long-term $ 46,624 $ 2 $ (142 ) $ 46,484 Balances at December 31, 2014: Investments-Short-term: U.S. government securities $ 26,930 $ 7 $ (2 ) $ 26,935 U.S. government agency securities 59,336 7 (6 ) 59,337 Non-U.S. government securities 8,764 2 — 8,766 Corporate debt securities 90,782 10 (47 ) 90,745 Total investments - short-term $ 185,812 $ 26 $ (55 ) $ 185,783 Investments-Long-term: U.S. government securities $ 25,320 $ 4 $ (10 ) $ 25,314 U.S. government agency securities 17,369 1 (14 ) 17,356 Corporate debt securities 16,540 2 (15 ) 16,527 Total investments - long-term $ 59,229 $ 7 $ (39 ) $ 59,197
Schedule of Investment in Unrealized Loss Position	The following table summarizes the fair value and gross unrealized losses of the Company’s investments, including investments categorized as cash equivalents, with unrealized losses, aggregated by type of investment instrument and length of time that individual securities have been in a continuous unrealized loss position (in thousands): Less than 12 Months 12 Months or Greater Total Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses December 31, 2015: U.S. government securities $ 48,445 $ (59 ) $ — $ — $ 48,445 $ (59 ) U.S. government agency securities 71,861 (78 ) — — 71,861 (78 ) Non-U.S. government securities 5,001 (1 ) — — 5,001 (1 ) Corporate debt securities 52,571 (120 ) — — 52,571 (120 ) Total investments $ 177,878 $ (258 ) $ — $ — $ 177,878 $ (258 ) December 31, 2014: U.S. government securities $ 22,355 $ (12 ) $ — $ — $ 22,355 $ (12 ) U.S. government agency securities 27,348 (20 ) — — 27,348 (20 ) Corporate debt securities 59,667 (62 ) — — 59,667 (62 ) Total investments $ 109,370 $ (94 ) $ — $ — $ 109,370 $ (94 )

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Schedule of Fair Value of Marketable Securities and Foreign Currency Contracts	The tables below set forth the Company’s recurring fair value measurements for the periods presented (in thousands): Fair Value Measurements at December 31, 2015 Using Description Total Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs (Level 1) (Level 2) Assets: Fixed income available-for-sale securities Cash and cash equivalents Money market funds $ 10,313 $ 10,313 $ — Non-U.S. government securities 975 — 975 Corporate debt securities 19,799 — 19,799 Short-term investments 184,242 — 184,242 Long-term investments 46,484 — 46,484 Total fixed income available-for-sale securities $ 261,813 $ 10,313 $ 251,500 Foreign currency forward contracts (a) $ 10,396 $ — $ 10,396 Liabilities: Foreign currency forward contracts (b) $ 6,031 $ — $ 6,031 Fair Value Measurements at December 31, 2014 Using Description Total Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs (Level 1) (Level 2) Assets: Fixed income available-for-sale securities Cash and cash equivalents Money market funds $ 1,395 $ 1,395 $ — Corporate debt securities 7,549 — 7,549 Short-term investments 185,783 — 185,783 Long-term investments 59,197 — 59,197 Total fixed income available-for-sale securities $ 253,924 $ 1,395 $ 252,529 Foreign currency forward contracts (a) $ 14,342 $ — $ 14,342 Liabilities: Foreign currency forward contracts (b) $ 8,175 $ — $ 8,175 ( a ) Included in short-term derivative asset as “Prepaid expenses and other current assets” in the Consolidated Balance Sheets. ( b ) Included in short-term derivative liability as “Other accrued liabilities” in the Consolidated Balance Sheets.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2015
Commitments And Contingencies Disclosure [Abstract]
Future Minimum Lease Payments Under Operating Lease	The Company leases certain office facilities and equipment under noncancelable operating leases expiring between 2016 and 2023. As of December 31, 2015, the following future minimum lease payments are due under the current lease obligations (in thousands). In addition to these minimum lease payments, the Company is contractually obligated under the majority of its operating leases to pay certain operating expenses during the term of the lease such as maintenance, taxes and insurance. Gross Net Minimum Minimum Lease Sublease Lease Year Ending December 31, Payments Receipts Payments 2016 $ 26,369 $ (2,499 ) $ 23,870 2017 23,331 (2,932 ) 20,399 2018 18,378 (2,802 ) 15,576 2019 16,737 (2,271 ) 14,466 2020 13,987 (1,050 ) 12,937 Thereafter 18,643 (89 ) 18,554 Total $ 117,445 $ (11,643 ) $ 105,802

Foreign Currency Derivatives (T

Foreign Currency Derivatives (Tables)	12 Months Ended
	Dec. 31, 2015
Derivative Instruments Measured at Gross Fair Value as Reflected in Consolidated Balance Sheets	The following table sets forth the Company’s derivative instruments measured at gross fair value as reflected in the Consolidated Balance Sheets (in thousands): December 31, 2015 December 31, 2014 Fair Derivatives as Hedge Instruments Fair Value of Derivatives Not Instruments Fair Value of Derivatives Designated as Hedge Instruments Fair Value of Derivatives Not Designated as Hedge Instruments Derivative assets (a) Foreign exchange contracts $ 2,283 $ 8,113 $ 5,501 $ 8,841 Derivative liabilities (b) Foreign exchange contracts $ 2,269 $ 3,762 $ 4,041 $ 4,134 (a) All derivative assets are recorded as ”Prepaid expenses and other current assets” in the Consolidated Balance Sheets. (b) All derivative liabilities are recorded as ”Other accrued liabilities” in the Consolidated Balance Sheets.
Offsetting of Derivative Assets	The following table sets forth the offsetting of derivative assets (in thousands): Gross Amounts Not Offset in the Consolidated Balance Sheets Gross Amounts of Recognized Assets Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts of Assets Presented in the Consolidated Balance Sheets Financial Instruments Cash Collateral Pledged Net Amount As of December 31, 2015: Foreign exchange contracts $ 10,396 $ — $ 10,396 $ (5,413 ) $ — $ 4,983 As of December 31, 2014: Foreign exchange contracts $ 14,342 $ — $ 14,342 $ (8,175 ) $ — $ 6,167
Offsetting of Derivative Liabilities	The following table sets forth the offsetting of derivative liabilities (in thousands): Gross Amounts Not Offset in the Consolidated Balance Sheets Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts of Liabilities Presented in the Consolidated Balance Sheets Financial Instruments Cash Collateral Pledged Net Amount As of December 31, 2015: Foreign exchange contracts $ 6,031 $ — $ 6,031 $ (5,413 ) $ — $ 618 As of December 31, 2014: Foreign exchange contracts $ 8,175 $ — $ 8,175 $ (8,175 ) $ — $ —
Cash Flow Hedging
Schedule of Notional Amount of Foreign Currency	The following table summarizes the Company’s notional position by currency, and approximate U.S. dollar equivalent, at December 31, 2015 of the outstanding cash flow hedges, all of which are carried at fair value on the Consolidated Balance Sheet (in thousands): Original Maturities of 360 Days or Less Original Maturities of Greater than 360 Days Foreign Currency USD Equivalent Positions Foreign Currency USD Equivalent Positions Chinese Yuan — $ — — 122,082 $ 18,725 Buy Euro — $ — — 26,824 $ 29,932 Buy Euro — $ — — 73,655 $ 82,077 Sell British Pound — $ — — 24,379 $ 37,070 Buy British Pound — $ — — 34,363 $ 51,741 Sell Israeli Shekel 24,900 $ 6,467 Buy 9,678 $ 2,465 Buy
Effect of Derivative Instruments in Consolidated Statements of Operations	The following tables show the effect of the Company’s derivative instruments designated as cash flow hedges in the Consolidated Statements of Operations for the periods presented (in thousands): Gain or (Loss) Recognized in OCI-Effective Portion Location of Gain or (Loss) Reclassified from OCI into Income-Effective Portion Gain or (Loss) Reclassified from OCI into Income Effective Portion Location of Gain or (Loss) Recognized-Ineffective Portion and Amount Excluded from Effectiveness Testing Gain or (Loss) Recognized Ineffective Portion and Amount Excluded from Effectiveness Testing (a) Year Ended December 31, 2015 Foreign exchange contracts $ 4,954 Product revenues $ 14,028 Interest and other income (expense), net $ 468 Cost of revenues (1,597 ) Sales and marketing (3,864 ) Research and development (800 ) General and administrative (1,388 ) $ 4,954 $ 6,379 $ 468 Year Ended December 31, 2014 Foreign exchange contracts $ 3,627 Product revenues $ 1,170 Interest and other income (expense), net $ 109 Cost of revenues 320 Sales and marketing 772 Research and development 86 General and administrative (7 ) $ 3,627 $ 2,341 $ 109 Year Ended December 31, 2013 Foreign exchange contracts $ 1,374 Product revenues $ 207 Interest and other income (expense), net $ 368 Cost of revenues 279 Sales and marketing 233 Research and development 1,425 General and administrative 164 $ 1,374 $ 2,308 $ 368 ( a) For the year ended December 31, 2015, 2014 and 2013, there were no gains or losses for the ineffective portion.
Not Designated as Hedging Instrument
Schedule of Notional Amount of Foreign Currency	The following table summarizes the Company’s notional position by currency, and approximate U.S. dollar equivalent, at December 31, 2015 of the outstanding non-designated hedges (foreign currency and dollar amounts in thousands): Original Maturities of 360 Days or Less Original Maturities of Greater than 360 Foreign Currency USD Equivalent Positions Foreign Currency USD Equivalent Positions Brazilian Real 18,557 $ 4,752 Buy — $ — — Brazilian Real 36,378 $ 9,141 Sell — $ — — Chinese Yuan — $ — — 85,718 $ 13,364 Buy Chinese Yuan 81,970 $ 12,703 Sell — $ — — Euro 27,878 $ 30,365 Buy 17,876 $ 21,249 Buy Euro 31,275 $ 33,998 Sell 62,745 $ 74,084 Sell British Pound 5,800 $ 8,587 Buy 20,420 $ 31,326 Buy British Pound 5,555 $ 8,214 Sell 24,937 $ 38,446 Sell Israeli Shekel 10,530 $ 2,728 Buy 66,322 $ 17,012 Buy Israeli Shekel 57,984 $ 14,961 Sell — $ — — Mexican Peso 18,178 $ 1,051 Buy — $ — — Mexican Peso 36,063 $ 2,127 Sell — $ — —
Effect of Derivative Instruments in Consolidated Statements of Operations	The following table shows the effect of the Company’s non-designated hedges in the Consolidated Statements of Operations (in thousands): Derivatives Not Designated as Hedging Instruments Location of Gain or (Loss) Recognized in Income on Derivative Amount of Gain or (Loss) Recognized in Income on Derivative Year Ended December 31, 2015 Foreign exchange contracts Interest and other income (expense), net $ 5,440 Year Ended December 31, 2014 Foreign exchange contracts Interest and other income (expense), net $ 6,708 Year Ended December 31, 2013 Foreign exchange contracts Interest and other income (expense), net $ (411 )

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2015
Equity [Abstract]
Changes in Accumulated Other Comprehensive Income (Loss) by Component	The following table summarizes the changes in accumulated other comprehensive income, net of tax, by component (in thousands). The tax effects were not shown separately, as the impacts were not material. Unrealized Gains and Losses on Cash Flow Hedges Unrealized Gains and Losses on Available-for- Sale Foreign Currency Translation Total Balance as of December 31, 2013 $ 80 $ 73 $ 4,219 $ 4,372 Other comprehensive income (loss) before reclassifications 3,627 (115 ) (1,422 ) 2,090 Amounts reclassified from accumulated other comprehensive income (a) (2,341 ) (10 ) — (2,351 ) Net current-period other comprehensive income (loss) 1,286 (125 ) (1,422 ) (261 ) Balance as of December 31, 2014 $ 1,366 $ (52 ) $ 2,797 $ 4,111 Other comprehensive income (loss) before reclassifications 4,954 (159 ) (3,744 ) 1,051 Amounts reclassified from accumulated other comprehensive income (a) (6,379 ) 14 — (6,365 ) Net current-period other comprehensive loss (1,425 ) (145 ) (3,744 ) (5,314 ) Balance as of December 31, 2015 $ (59 ) $ (197 ) $ (947 ) $ (1,203 ) (a) See Note 13 for details of gains and losses, net of taxes, reclassified out of accumulated other comprehensive (loss) income into net income related to cash flow hedges and each line item of net income affected by the reclassification. Gains and losses related to available-for-sale securities were reclassified into “Interest and other income (expense), net” in the Consolidated Statements of Operations, net of taxes.

Stock-Based Employee Benefit 40

Stock-Based Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2015
Activity Under Share-Based Compensation Plan	Activity under the above plans for the year ended December 31, 2015 was as follows: Shares Available for Grant (1) Balances, December 31, 2014 13,439,432 Additional shares available for grant (2) 5,600,000 Performance shares granted (3) (1,709,336 ) Performance shares forfeited 352,930 Restricted stock units granted (5,050,548 ) Restricted stock units forfeited 1,291,177 Options granted — Options forfeited 10,193 Options expired 8,480 Balances, December 31, 2015 13,942,328 (1) For purpose of above table, shares are counted on a fungible basis (i.e., at a higher multiplier than one-for-one) for full value award activity. (2) Approved by stockholders on May 27, 2015. (3) Includes 131,212 additional shares (202,066 shares applying the applicable fungible ratio) resulting from above target performance.
Options Outstanding and Exercisable by Range of Exercise Price	The options outstanding and currently exercisable by exercise price at December 31, 2015 are as follows: Stock Options Outstanding and Exercisable Range of Exercise Price Number Outstanding Weighted Average Remaining Contractual Life (Yrs) Weighted Average Exercise Price $ 0.75 42 4.06 $ 0.75 $ 11.61 168,559 3.41 $ 11.61 168,601 3.41 $ 11.61
Changes in Unvested Performance Shares, Restricted Stock Units and Non-Employee Director Restricted Stock Units	The following table summarizes the changes in unvested performance shares, RSUs and non-employee director RSUs for 2015: Number of Shares (1) Weighted Average Grant Date Fair Value Unvested shares at December 31, 2014 6,825,691 $ 12.26 Performance shares granted (2) 1,109,959 $ 14.07 Restricted stock units granted (3) 3,279,577 $ 13.49 Performance shares vested and issued (782,210 ) $ 13.81 Restricted stock units vested and issued (2,670,181 ) $ 12.47 Performance shares forfeited (217,108 ) $ 12.54 Restricted stock units forfeited (803,545 ) $ 12.34 Unvested shares at December 31, 2015 6,742,183 $ 12.88 (1) For the purposes of this table, shares are counted on a one-for-one basis, not on a fungible share counting basis. (2) Includes 131,212 additional shares resulting from above target performance. (3) Includes 135,000 restricted stock units granted to non-employee directors.
Summary and Allocation of Stock-Based Compensation Expense	The following table summarizes stock-based compensation expense recorded and its allocation within the Consolidated Statements of Operations (in thousands): Year Ended December 31, 2015 2014 2013 Cost of product revenues $ 2,917 $ 2,463 $ 2,892 Cost of service revenues 4,711 4,293 5,852 Stock-based compensation expense included in cost of revenues 7,628 6,756 8,744 Sales and marketing 13,187 14,893 26,570 Research and development 9,307 10,299 15,634 General and administrative 15,017 16,012 13,517 Stock-based compensation expense included in operating expenses 37,511 41,204 55,721 Stock-based compensation expense related to employee equity awards and employee stock purchases 45,139 47,960 64,465 Tax benefit 8,171 9,492 11,174 Stock-based compensation expense related to employee equity awards and employee stock purchases, net of tax $ 36,968 $ 38,468 $ 53,291
Significant Assumptions Used to Estimate Fair Value of Employee Stock Purchase Plan	The estimated fair value per share of employee stock purchase rights granted pursuant to ESPP in 2015, 2014, and 2013 ranged from $2.56 to $4.27, from $2.80 to $4.48, and from $2.60 to $4.57, respectively, and was estimated on the date of grant using the Black-Scholes option valuation model based on the following assumptions: 2015 2014 2013 Expected volatility 28.08-30.73% 26.47-32.18% 42.40-48.89% Risk-free interest rate 0.07-0.68% 0.05-0.47% 0.08-0.35% Expected dividends 0.0% 0.0% 0.0% Expected life (years) 0.49-2.0 0.5-2.0 0.5-2.0
Employee Stock Option Plans
Activity Under Share-Based Compensation Plan	Activity under the stock option plans for the year ended December 31, 2015 was as follows: Outstanding Options Number of Shares Weighted Avg Exercise Price Weighted Avg Contractual Term (Years) Aggregate Intrinsic Value (in thousands) Balances, December 31, 2014 240,493 $ 11.62 Options granted — — Options exercised (53,219 ) $ 11.65 Options forfeited (10,193 ) $ 11.61 Options expired (8,480 ) $ 11.74 Balances, December 31, 2015 168,601 $ 11.61 3.41 $ 165,685

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Components of Income Tax Expense	Income tax expense (benefit) consists of the following (in thousands): Year Ended December 31, 2015 2014 2013 Income tax expense from continuing operations Current Federal $ 4,486 $ (2,843 ) $ (953 ) State 360 (235 ) (72 ) Foreign 8,176 8,352 8,604 $ 13,022 $ 5,274 $ 7,579 Deferred Federal $ 202 $ (2,562 ) $ (10,715 ) State 43 (273 ) (818 ) Foreign 2,677 (1,483 ) 285 $ 2,922 $ (4,318 ) $ (11,248 ) Total income tax expense (benefit) from continuing operations $ 15,944 $ 956 $ (3,669 ) Income tax expense from discontinued operations $ — $ — $ 96
Sources of Income Before Provision for Income Taxes	Income from continuing operations before income taxes is categorized geographically as follows (in thousands): Year Ended December 31, 2015 2014 2013 United States $ 15,998 $ (2,317 ) $ (17,823 ) Foreign 69,921 45,332 (4,381 ) Total income (loss) from continuing operations before income taxes $ 85,919 $ 43,015 $ (22,204 )
Reconciliation of Tax Provision Computed Using Statutory Rates to Effective Income Tax Provision	The Company’s tax provision from continuing operations differs from the provision computed using statutory tax rates as follows (in thousands): Year Ended December 31, 2015 2014 2013 Federal tax at statutory rate $ 30,071 $ 15,055 $ (7,771 ) State taxes, net of federal benefit 1,129 (508 ) (1,571 ) Non-deductible share-based compensation expense 1,138 (346 ) 2,900 Foreign income at tax rates different than U.S. rates (17,715 ) (14,025 ) 7,104 Changes in reserves for uncertain tax positions (751 ) (756 ) (2,497 ) Research and development tax credit (1,612 ) (1,898 ) (4,243 ) Domestic production activities deduction — (22 ) (757 ) Non-deductible executive compensation expense 725 778 460 Subpart F income 1,018 679 716 Non-deductible acquisition and divestiture costs 146 (4 ) (355 ) Sale of intellectual property 947 2,115 2,947 Foreign tax credit (625 ) (317 ) (359 ) Other 1,473 205 (243 ) Tax provision (benefit) $ 15,944 $ 956 $ (3,669 )
Summary of Temporary Differences Resulting in Deferred Tax Assets (Liabilities)	The tax effects of temporary differences that give rise to the deferred tax assets (liabilities) are presented below (in thousands): December 31, 2015 2014 Property and equipment, net, principally due to difference in depreciation $ 9,154 $ 7,534 Acquired intangibles 4,942 4,490 Inventory 5,824 5,685 Restructuring reserves 7,222 13,722 Deferred revenue 11,852 10,964 Other reserves 21,791 20,400 Share-based compensation 10,616 11,910 Net operating loss and capital loss carryforwards 6,512 2,535 Tax credit carryforwards 25,512 21,237 Deferred tax asset 103,425 98,477 Capitalized research and development costs (560 ) (766 ) Acquired intangibles (1,759 ) (1,843 ) Deferred tax asset before valuation allowance $ 101,106 $ 95,868 Valuation allowance (11,375 ) (3,216 ) Deferred tax asset, net of valuation allowance $ 89,731 $ 92,652
Aggregate Changes in Gross Unrecognized Tax Benefits	The aggregate changes in the balance of the Company’s gross unrecognized tax benefits were as follows for the periods indicated (in thousands): December 31, 2015 2014 2013 Beginning balance $ 21,642 $ 22,012 $ 23,049 Additions based on tax positions taken during the current period 441 531 1,414 Reductions related to a lapse of applicable statue of limitations (1,956 ) (901 ) (2,451 ) Ending balance $ 20,127 $ 21,642 $ 22,012

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	12 Months Ended
	Dec. 31, 2015
Earnings Per Share [Abstract]
Reconciliation of Numerator and Denominator of Basic and Diluted Net Income (Loss) Per Share	The following table sets forth the computation of basic and diluted net income (loss) per share (in thousands, except per-share amounts): Year Ended December 31, 2015 2014 2013 Numerator Net income (loss) from continuing operations $ 69,975 $ 42,059 $ (18,535 ) Gain from sale of discontinued operations, net of taxes — — 459 Net income (loss) $ 69,975 $ 42,059 $ (18,076 ) Denominator Weighted average shares outstanding, basic 133,581 136,801 167,272 Effect of dilutive potential common shares 3,813 5,204 — Weighted average shares outstanding, diluted 137,394 142,005 167,272 Basic net income (loss) per share Net income (loss) per share from continuing operations $ 0.52 $ 0.31 $ (0.11 ) Gain per share from sale of discontinued operations, net of taxes — — — Basic net income (loss) per share $ 0.52 $ 0.31 $ (0.11 ) Diluted net income (loss) per share Net income (loss) per share from continuing operations $ 0.51 $ 0.30 $ (0.11 ) Gain per share from sale of discontinued operations, net of taxes — — — Diluted net income (loss) per share $ 0.51 $ 0.30 $ (0.11 ) Antidilutive employee stock-based awards, excluded 449 213 5,045

Business Segment Information (T

Business Segment Information (Tables)	12 Months Ended
	Dec. 31, 2015
Segment Reporting [Abstract]
Financial Information by Reportable Segment	Financial information for each reportable geographical segment as of and for the fiscal years ended December 31, 2015, 2014, and 2013, based on the Company’s internal management system and as utilized by the Company’s Chief Operating Decision Maker (“CODM”), its Chief Executive Officer, is as follows (in thousands): Americas EMEA APAC Total 2015: Revenue $ 617,211 $ 336,894 $ 313,120 $ 1,267,225 % of total revenue 49 % 26 % 25 % 100 % Contribution margin $ 236,482 $ 141,744 $ 147,512 $ 525,738 % of segment revenue 38 % 42 % 47 % 41 % 2014: Revenue $ 662,533 $ 349,821 $ 332,800 $ 1,345,154 % of total revenue 49 % 26 % 25 % 100 % Contribution margin $ 270,265 $ 150,426 $ 140,365 $ 561,056 % of segment revenue 41 % 43 % 42 % 42 % 2013: Revenue $ 694,522 $ 338,035 $ 335,832 $ 1,368,389 % of total revenue 50 % 25 % 25 % 100 % Contribution margin $ 270,786 $ 142,686 $ 136,462 $ 549,934 % of segment revenue 39 % 42 % 41 % 40 % At December 31, 2015: Gross accounts receivable $ 97,742 $ 78,726 $ 66,443 $ 242,911 % of total gross accounts receivable 40 % 33 % 27 % 100 % At December 31, 2014: Gross accounts receivable $ 88,316 $ 62,540 $ 63,808 $ 214,664 % of total gross accounts receivable 41 % 29 % 30 % 100 %
Reconciliation of Segment Information to Consolidated Totals	The following tables set forth the reconciliation of segment information to Polycom consolidated totals (in thousands): Year Ended December 31, 2015 2014 2013 Segment contribution margin $ 525,738 $ 561,056 $ 549,934 Corporate and unallocated costs (370,368 ) (409,700 ) (430,471 ) Stock-based compensation (45,139 ) (47,960 ) (64,465 ) Effect of stock-based compensation cost on warranty expense (336 ) (494 ) (547 ) Amortization of purchased intangibles (10,451 ) (12,816 ) (19,750 ) Restructuring costs (11,096 ) (40,347 ) (48,470 ) Litigation reserves and payments — (3,130 ) — Transaction-related costs (574 ) (156 ) (3,424 ) Interest and other income (expense), net (1,855 ) (3,438 ) (5,011 ) Income (loss) from continuing operations before provision for (benefit from) income taxes $ 85,919 $ 43,015 $ (22,204 )
Revenues by Groups of Similar Products and Services	The following table sets forth the Company’s revenues by groups of similar products and services as follows (in thousands): Year Ended December 31, 2015 2014 2013 Revenues: UC group systems $ 772,744 $ 868,311 $ 904,923 UC personal devices 267,249 236,781 219,103 UC platform 227,232 240,062 244,363 Total $ 1,267,225 $ 1,345,154 $ 1,368,389
Long-lived Assets by Geographic Areas	The Company’s fixed assets, net of accumulated depreciation, are located in the following geographical areas (in thousands): December 31, 2015 2014 United States $ 77,082 $ 78,692 EMEA 10,149 11,254 APAC 13,486 17,663 Other 1,136 1,586 Total $ 101,853 $ 109,195

Summary of Significant Accoun44

Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Summary Of Significant Accounting Policies [Line Items]
Capitalized software development costs	$ 5.6	$ 5.1	$ 2.4
Advertising expense	$ 13.6	13.6	$ 14.9
Measuring benefits for uncertain tax positions more likely than not of being sustained upon audit, threshold percentage	50.00%
Debt issuance cost related to term loan		$ 2
Hardware Products
Summary Of Significant Accounting Policies [Line Items]
Warranty period	1 year
Software Products
Summary Of Significant Accounting Policies [Line Items]
Warranty period	90 days
Minimum
Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life, years	1 year
Minimum | Hardware Products
Summary Of Significant Accounting Policies [Line Items]
Service period of recognizing maintenance service revenue, years	1 year
Minimum | Software Products
Summary Of Significant Accounting Policies [Line Items]
Service period of recognizing maintenance service revenue, years	1 year
Maximum
Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life, years	7 years
Intangible assets with finite lives, estimated economic lives, years	6 years
Maximum | Hardware Products
Summary Of Significant Accounting Policies [Line Items]
Service period of recognizing maintenance service revenue, years	5 years
Maximum | Software Products
Summary Of Significant Accounting Policies [Line Items]
Service period of recognizing maintenance service revenue, years	5 years
Leasehold Improvements | Minimum
Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life, years	3 years
Leasehold Improvements | Maximum
Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life, years	13 years
Software and Software Development Costs
Summary Of Significant Accounting Policies [Line Items]
Intangible assets with finite lives, estimated economic lives, years	3 years

Summary of Significant Accoun45

Summary of Significant Accounting Policies - Foreign Currency Translation Adjustment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Beginning balance	$ 2,797	$ 4,219	$ 3,180
Foreign currency translation adjustments	(3,744)	(1,422)	1,039
Ending balance	$ (947)	$ 2,797	$ 4,219

Discontinued Operations - Addit

Discontinued Operations - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2013
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gain from sale of discontinued operations, net of taxes		$ 459,000
Mobile Devices Holdings LLC | Maximum
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Additional cash consideration payable over the next two years subject to certain conditions, including meeting certain agreed-upon EBITDA-based milestones	$ 25,000,000

Accounts Receivable Financing -

Accounts Receivable Financing - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounts Notes And Loans Receivable [Line Items]
Amount of total outstanding accounts receivable under a financing arrangement	$ 232.6	$ 194.4	$ 123.4
Amount due from the financing company	32.7	28.5
Fees incurred pursuant to the factoring agreement	3.4	2.6	1.8
Transfer of Financial Assets Under Financing Arrangement
Accounts Notes And Loans Receivable [Line Items]
Amount of total outstanding accounts receivable under a financing arrangement	139.4	136	$ 109.4
Amount due from the financing company	$ 22.1	$ 20.2

Goodwill, Purchased Intangibl48

Goodwill, Purchased Intangibles, and Software Development Costs - Additional Information (Details)	12 Months Ended
	Dec. 31, 2015USD ($)Site	Dec. 31, 2014USD ($)Site	Dec. 31, 2013USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Number of reporting units | Site	4	4
Goodwill, Impairment Loss	$ 0
Indefinite-lived trade name	918,000	$ 918,000
Impairment charges related to purchase of intangible assets	$ 0	$ 0	$ 0

Goodwill, Purchased Intangibl49

Goodwill, Purchased Intangibles, and Software Development Costs - Schedule of Goodwill by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Beginning Balance	$ 559,231	$ 559,460
Foreign currency translation	(456)	(229)
Ending Balance	558,775	559,231
Americas
Goodwill [Line Items]
Beginning Balance	308,159	308,159
Ending Balance	308,159	308,159
EMEA
Goodwill [Line Items]
Beginning Balance	101,882	101,882
Ending Balance	101,882	101,882
APAC
Goodwill [Line Items]
Beginning Balance	149,190	149,419
Foreign currency translation	(456)	(229)
Ending Balance	$ 148,734	$ 149,190

Goodwill, Purchased Intangibl50

Goodwill, Purchased Intangibles, and Software Development Costs - Schedule of Purchased Intangible Assets by Major Class (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Acquired And Internally Developed Finite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets, Gross Value	$ 170,365	$ 170,365
Finite Lived Intangible Assets, Accumulated Amortization and Impairment	(157,218)	(146,716)
Finite Lived Intangible Assets, Net Value	13,147	23,649
Indefinite-lived trade name	918	918
Total intangible assets, Gross Value	171,283	171,283
Total intangible assets, Accumulated Amortization and Impairment	(157,218)	(146,716)
Total intangible assets, Net Value	14,065	24,567
Capitalized software development costs for products to be sold, Gross Value	12,993	7,416
Capitalized software development costs for products to be sold, Accumulated Amortization & Impairment	(5,002)	(1,900)
Capitalized software development costs for products to be sold, Net Value	7,991	5,516
Core and developed technology
Acquired And Internally Developed Finite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets, Gross Value	81,178	81,178
Finite Lived Intangible Assets, Accumulated Amortization and Impairment	(80,945)	(79,986)
Finite Lived Intangible Assets, Net Value	233	1,192
Customer and partner relationships
Acquired And Internally Developed Finite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets, Gross Value	79,525	79,525
Finite Lived Intangible Assets, Accumulated Amortization and Impairment	(66,742)	(57,983)
Finite Lived Intangible Assets, Net Value	12,783	21,542
Non-compete agreements
Acquired And Internally Developed Finite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets, Gross Value	1,800	1,800
Finite Lived Intangible Assets, Accumulated Amortization and Impairment	(1,700)	(1,100)
Finite Lived Intangible Assets, Net Value	100	700
Trade name
Acquired And Internally Developed Finite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets, Gross Value	3,400	3,400
Finite Lived Intangible Assets, Accumulated Amortization and Impairment	(3,369)	(3,229)
Finite Lived Intangible Assets, Net Value	31	171
Other
Acquired And Internally Developed Finite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets, Gross Value	4,462	4,462
Finite Lived Intangible Assets, Accumulated Amortization and Impairment	$ (4,462)	(4,418)
Finite Lived Intangible Assets, Net Value		$ 44

Goodwill, Purchased Intangibl51

Goodwill, Purchased Intangibles, and Software Development Costs - Summary of Amortization Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization of purchased intangibles in revenues	$ 51	$ 75	$ 75
Amortization of purchased intangibles in cost of product revenues	956	3,035	9,361
Amortization of purchased intangibles in operating expenses	9,495	9,781	10,389
Total amortization expenses of purchased intangibles	$ 10,502	$ 12,891	$ 19,825

Goodwill, Purchased Intangibl52

Goodwill, Purchased Intangibles, and Software Development Costs - Estimated Future Amortization Expense of Purchased Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Goodwill And Intangible Assets Disclosure [Abstract]
2,016	$ 8,478
2,017	4,669
Finite Lived Intangible Assets, Net Value	$ 13,147	$ 23,649

Balance Sheet Details - Schedul

Balance Sheet Details - Schedule of Trade Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Receivables [Abstract]
Gross trade receivables	$ 242,911	$ 214,664
Returns and other reserves	(52,000)	(42,224)
Allowance for doubtful accounts	(3,023)	(3,040)
Total	$ 187,888	$ 169,400

Balance Sheet Details - Sched54

Balance Sheet Details - Schedule of Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Inventory Disclosure [Abstract]
Raw materials	$ 824	$ 1,496
Work in process	117	545
Finished goods	88,451	98,287
Total	$ 89,392	$ 100,328

Balance Sheet Details - Prepaid

Balance Sheet Details - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Non-trade receivables	$ 7,689	$ 6,547
Prepaid expenses	33,174	37,385
Derivative assets	10,396	14,342
Other current assets	1,593	2,265
Total	$ 52,852	$ 60,539

Balance Sheet Details - Sched56

Balance Sheet Details - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Property Plant And Equipment [Line Items]
Total gross property and equipment	$ 517,037	$ 485,938
Less: Accumulated depreciation and amortization	(415,184)	(376,743)
Total	$ 101,853	109,195
Minimum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful life, years	1 year
Maximum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful life, years	7 years
Computer Equipment And Software
Property Plant And Equipment [Line Items]
Total gross property and equipment	$ 315,828	294,724
Computer Equipment And Software | Minimum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful life, years	3 years
Computer Equipment And Software | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful life, years	5 years
Equipment Furniture And Fixtures
Property Plant And Equipment [Line Items]
Total gross property and equipment	$ 123,124	115,226
Equipment Furniture And Fixtures | Minimum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful life, years	1 year
Equipment Furniture And Fixtures | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful life, years	7 years
Tooling Equipment
Property Plant And Equipment [Line Items]
Total gross property and equipment	$ 18,123	16,325
Tooling Equipment | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful life, years	3 years
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total gross property and equipment	$ 59,962	$ 59,663
Leasehold Improvements | Minimum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful life, years	3 years
Leasehold Improvements | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful life, years	13 years

Balance Sheet Details - Sched57

Balance Sheet Details - Schedule of Deferred Revenue (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred Revenue Arrangement [Line Items]
Short-term deferred revenue	$ 170,559	$ 173,532
Long-term deferred revenue	86,191	89,366
Software Service, Support and Maintenance Arrangement
Deferred Revenue Arrangement [Line Items]
Short-term deferred revenue	165,594	171,355
Long-term deferred revenue	82,598	85,925
Software License Arrangement
Deferred Revenue Arrangement [Line Items]
Short-term deferred revenue	4,965	2,083
Long-term deferred revenue	$ 3,593	3,441
Product
Deferred Revenue Arrangement [Line Items]
Short-term deferred revenue		$ 94

Balance Sheet Details - Changes

Balance Sheet Details - Changes in Deferred Services Revenue (Details) - Software Service, Support and Maintenance Arrangement - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Deferred Revenue Arrangement [Line Items]
Balance at beginning of period	$ 257,280	$ 253,793
Additions to deferred service revenue	331,876	347,896
Amortization of deferred service revenue	(340,964)	(344,409)
Balance at end of period	$ 248,192	$ 257,280

Balance Sheet Details - Chang59

Balance Sheet Details - Changes in Deferred License Revenue (Details) - Deferred License Revenue - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Deferred Revenue Arrangement [Line Items]
Balance at beginning of period	$ 5,524	$ 5,775
Additions to deferred license revenue	5,706	1,345
Amortization of deferred service revenue	(2,672)	(1,596)
Balance at end of period	$ 8,558	$ 5,524

Balance Sheet Details - Sched60

Balance Sheet Details - Schedule of Other Current Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Payables And Accruals [Abstract]
Accrued expenses	$ 25,179	$ 27,523
Accrued co-op expenses	2,670	4,102
Restructuring reserves	16,187	12,207
Warranty obligations	10,172	11,613	$ 9,475
Derivative liabilities	6,031	8,175
Employee stock purchase plan withholdings	9,668	10,658
Other accrued liabilities	15,188	11,915
Total	$ 85,095	$ 86,193

Balance Sheet Details - Chang61

Balance Sheet Details - Changes in Warranty Obligation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Standard Product Warranty Disclosure [Abstract]
Balance at beginning of period	$ 11,613	$ 9,475
Accruals for warranties issued during the period	12,444	16,753
Charges against warranty reserve during the period	(13,885)	(14,615)
Balance at end of period	$ 10,172	$ 11,613

Restructuring Costs - Additiona

Restructuring Costs - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restructuring Cost And Reserve [Line Items]
Restructuring costs			$ 11,096	$ 40,347	$ 48,470
Global workforce elimination percentage under restructuring plan			11.00%	6.00%	4.00%
Additions to the reserve			$ 9,532	$ 40,279	$ 49,835
Other Restructuring Costs					2,900
EMEA | Minimum
Restructuring Cost And Reserve [Line Items]
Restructuring and related cost, expected cost remaining	$ 13,000	$ 13,000	13,000
EMEA | Maximum
Restructuring Cost And Reserve [Line Items]
Restructuring and related cost, expected cost remaining	16,000	16,000	16,000
Severance / Other
Restructuring Cost And Reserve [Line Items]
Additions to the reserve	$ 9,400	4,600	13,999	11,755	10,185
Employees Severance Payments
Restructuring Cost And Reserve [Line Items]
Additions to the reserve		$ 2,700
Facilities Related Restructuring Reserves Change in Estimate Assumption
Restructuring Cost And Reserve [Line Items]
Additions to the reserve			(8,000)
Deferred Rent
Restructuring Cost And Reserve [Line Items]
Additions to the reserve			$ 1,600	2,300	2,800
Idle Facility
Restructuring Cost And Reserve [Line Items]
Additions to the reserve				$ 28,600	$ 38,200

Restructuring Costs - Summary o

Restructuring Costs - Summary of Activity of Restructuring Reserves (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restructuring Cost And Reserve [Line Items]
Beginning balance			$ 41,573	$ 34,929	$ 8,826
Additions to the reserve, net			9,532	40,279	49,835
Interest accretion			1,564	2,347	1,461
Non-cash adjustments			(696)	(4,855)	(3,547)
Cash payments			(24,645)	(31,127)	(21,646)
Ending balance	$ 27,328	$ 27,328	27,328	41,573	34,929
Severance / Other
Restructuring Cost And Reserve [Line Items]
Beginning balance			664	1,143	1,362
Additions to the reserve, net	9,400	4,600	13,999	11,755	10,185
Cash payments			(6,591)	(12,234)	(10,404)
Ending balance	8,072	8,072	8,072	664	1,143
Facilities
Restructuring Cost And Reserve [Line Items]
Beginning balance			40,909	33,786	7,464
Additions to the reserve, net			(5,268)	28,524	36,770
Interest accretion			1,564	2,347	1,461
Non-cash adjustments			(696)	(4,855)	(3,547)
Cash payments			(18,054)	(18,893)	(8,362)
Ending balance	18,455	18,455	18,455	$ 40,909	33,786
Other
Restructuring Cost And Reserve [Line Items]
Additions to the reserve, net			801		2,880
Cash payments					$ (2,880)
Ending balance	$ 801	$ 801	$ 801

Debt - Additional Information (

Debt - Additional Information (Details) - USD ($) $ in Thousands	Sep. 13, 2013	Dec. 31, 2015	Dec. 31, 2014	Sep. 30, 2013
Debt Instrument [Line Items]
Term loan	$ 250,000			$ 250,000
Maturity date of term loan	Sep. 13, 2018
Debt instrument description of variable rate basis		a $250.0 million term loan (the “Term Loan”) maturing on September 13, 2018 (the “Maturity Date”), which bears interest at the Company’s option at either a base rate plus a spread of 0.50% to 1.00%, or a reserve adjusted LIBOR rate plus a spread of 1.50% to 2.00% based on the Company’s consolidated leverage ratio for the preceding four fiscal quarters.
Term loan quarterly installments		$ 1,600
Debt instrument, covenant compliance		The Company was in compliance with these covenants as of December 31, 2015.
Default interest rate applicable for any overdue principal		2.00%
Default interest rate for base rate loans for any other overdue amounts		2.00%
Weighted average interest rate		2.30%
Accrued interest on Term loan		$ 600
Term loan, current		5,717	$ 5,717
Long-term debt		228,799	$ 234,516
Term Loan - Current Portion
Debt Instrument [Line Items]
Unamortized debt issuance costs		500
Term Loan - Noncurrent Portion
Debt Instrument [Line Items]
Unamortized debt issuance costs		$ 900
Base Rate | Minimum | Term Loan
Debt Instrument [Line Items]
Term loan interest rate, applicable margin	0.50%
Base Rate | Maximum | Term Loan
Debt Instrument [Line Items]
Term loan interest rate, applicable margin	1.00%
LIBOR rate plus | Minimum | Term Loan
Debt Instrument [Line Items]
Term loan interest rate, applicable margin	1.50%
LIBOR rate plus | Maximum | Term Loan
Debt Instrument [Line Items]
Term loan interest rate, applicable margin	2.00%

Debt - Interest Expenses Recogn

Debt - Interest Expenses Recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Debt Disclosure [Abstract]
Contractual interest expense	$ 5,246	$ 4,940	$ 1,605
Amortization of debt issuance costs	532	533	178
Total	$ 5,778	$ 5,473	$ 1,783

Debt - Future Principal Payment

Debt - Future Principal Payments for Long-term Debt Including Current Portion (Details) $ in Thousands	Dec. 31, 2015USD ($)
Long Term Debt By Maturity [Abstract]
2,016	$ 6,250
2,017	6,250
2,018	223,438
Total	$ 235,938

Investments - Additional Inform

Investments - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Investments Debt And Equity Securities [Abstract]
Cash and cash equivalents	$ 435,093,000	$ 443,132,000	$ 392,629,000	$ 477,073,000
Long-term investments, contractual maturity period, minimum	1 year
Long-term investments, contractual maturity period, maximum	2 years
Investments other than temporarily impaired	$ 0	0
Material realized gains (losses), net	$ 0	$ 0	$ 0

Investments - Short-Term and Lo

Investments - Short-Term and Long-Term Investments in Debt Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available for Sale Securities [Line Items]
Short-term investments	$ 184,242	$ 185,783
Long-term investments	46,484	59,197
Non-U.S. Government Securities
Schedule of Available for Sale Securities [Line Items]
Short-term investments	975
Corporate Debt Securities
Schedule of Available for Sale Securities [Line Items]
Short-term investments	19,799	7,549
Short-term Investments
Schedule of Available for Sale Securities [Line Items]
Cost Basis	184,352	185,812
Unrealized Gains	6	26
Unrealized Losses	(116)	(55)
Short-term investments	184,242	185,783
Short-term Investments | U.S. Government Securities
Schedule of Available for Sale Securities [Line Items]
Cost Basis	49,036	26,930
Unrealized Gains	4	7
Unrealized Losses	(45)	(2)
Short-term investments	48,995	26,935
Short-term Investments | U.S. Government Agency Securities
Schedule of Available for Sale Securities [Line Items]
Cost Basis	67,723	59,336
Unrealized Gains	1	7
Unrealized Losses	(30)	(6)
Short-term investments	67,694	59,337
Short-term Investments | Non-U.S. Government Securities
Schedule of Available for Sale Securities [Line Items]
Cost Basis	7,303	8,764
Unrealized Gains		2
Unrealized Losses	(1)
Short-term investments	7,302	8,766
Short-term Investments | Corporate Debt Securities
Schedule of Available for Sale Securities [Line Items]
Cost Basis	60,290	90,782
Unrealized Gains	1	10
Unrealized Losses	(40)	(47)
Short-term investments	60,251	90,745
Long-term investments
Schedule of Available for Sale Securities [Line Items]
Cost Basis	46,624	59,229
Unrealized Gains	2	7
Unrealized Losses	(142)	(39)
Long-term investments	46,484	59,197
Long-term investments | U.S. Government Securities
Schedule of Available for Sale Securities [Line Items]
Cost Basis	8,058	25,320
Unrealized Gains		4
Unrealized Losses	(14)	(10)
Long-term investments	8,044	25,314
Long-term investments | U.S. Government Agency Securities
Schedule of Available for Sale Securities [Line Items]
Cost Basis	14,510	17,369
Unrealized Gains		1
Unrealized Losses	(48)	(14)
Long-term investments	14,462	17,356
Long-term investments | Corporate Debt Securities
Schedule of Available for Sale Securities [Line Items]
Cost Basis	24,056	16,540
Unrealized Gains	2	2
Unrealized Losses	(80)	(15)
Long-term investments	$ 23,978	$ 16,527

Investments - Schedule of Inves

Investments - Schedule of Investment in Unrealized Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available for Sale Securities [Line Items]
Fair Value, Less than 12 Months	$ 177,878	$ 109,370
Gross Unrealized Losses, Less than 12 Months	(258)	(94)
Total Fair Value	177,878	109,370
Total Gross Unrealized Losses	(258)	(94)
U.S. Government Securities
Schedule of Available for Sale Securities [Line Items]
Fair Value, Less than 12 Months	48,445	22,355
Gross Unrealized Losses, Less than 12 Months	(59)	(12)
Total Fair Value	48,445	22,355
Total Gross Unrealized Losses	(59)	(12)
U.S. Government Agency Securities
Schedule of Available for Sale Securities [Line Items]
Fair Value, Less than 12 Months	71,861	27,348
Gross Unrealized Losses, Less than 12 Months	(78)	(20)
Total Fair Value	71,861	27,348
Total Gross Unrealized Losses	(78)	(20)
Non-U.S. Government Securities
Schedule of Available for Sale Securities [Line Items]
Fair Value, Less than 12 Months	5,001
Gross Unrealized Losses, Less than 12 Months	(1)
Total Fair Value	5,001
Total Gross Unrealized Losses	(1)
Corporate Debt Securities
Schedule of Available for Sale Securities [Line Items]
Fair Value, Less than 12 Months	52,571	59,667
Gross Unrealized Losses, Less than 12 Months	(120)	(62)
Total Fair Value	52,571	59,667
Total Gross Unrealized Losses	$ (120)	$ (62)

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Fair Value of Marketable Securities and Foreign Currency Contracts (Details) - USD ($) $ in Thousands		Dec. 31, 2015	Dec. 31, 2014
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed income available-for-sale securities, short-term		$ 184,242	$ 185,783
Fixed income available-for-sale securities, long-term		46,484	59,197
Total fixed income available-for-sale securities		261,813	253,924
Foreign currency forward contracts, Assets	[1]	10,396	14,342
Foreign currency forward contracts, Liabilities	[2]	6,031	8,175
Non-U.S. Government Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed income available-for-sale securities, short-term		975
Corporate Debt Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed income available-for-sale securities, short-term		19,799	7,549
Money market funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed income available-for-sale securities, short-term		10,313	1,395
Quoted Prices in Active Markets for Identical Assets, Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total fixed income available-for-sale securities		10,313	1,395
Quoted Prices in Active Markets for Identical Assets, Level 1 | Money market funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed income available-for-sale securities, short-term		10,313	1,395
Significant Other Observable Inputs, Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total fixed income available-for-sale securities		251,500	252,529
Foreign currency forward contracts, Assets	[1]	10,396	14,342
Foreign currency forward contracts, Liabilities	[2]	6,031	8,175
Significant Other Observable Inputs, Level 2 | Non-U.S. Government Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed income available-for-sale securities, short-term		975
Significant Other Observable Inputs, Level 2 | Corporate Debt Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed income available-for-sale securities, short-term		19,799	7,549
Short-term Investments
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed income available-for-sale securities, short-term		184,242	185,783
Short-term Investments | Non-U.S. Government Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed income available-for-sale securities, short-term		7,302	8,766
Short-term Investments | Corporate Debt Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed income available-for-sale securities, short-term		60,251	90,745
Short-term Investments | Significant Other Observable Inputs, Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed income available-for-sale securities, short-term		184,242	185,783
Long-term investments
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed income available-for-sale securities, long-term		46,484	59,197
Long-term investments | Corporate Debt Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed income available-for-sale securities, long-term		23,978	16,527
Long-term investments | Significant Other Observable Inputs, Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed income available-for-sale securities, long-term		$ 46,484	$ 59,197
[1]	Included in short-term derivative asset as “Prepaid expenses and other current assets” in the Consolidated Balance Sheets.
[2]	Included in short-term derivative liability as “Other accrued liabilities” in the Consolidated Balance Sheets.

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value transfers between Level 1 and Level 2	$ 0	$ 0
Fair value of Term Loan	226,500,000	234,900,000
Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investments holdings	$ 0	$ 0

Business Risks and Credit Con72

Business Risks and Credit Concentration - Additional Information (Detail) - Customer Concentration Risk - ScanSource Communications - Customer	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Total Net Revenues
Concentration Risk [Line Items]
Concentration risk percentage	20.00%	17.00%	16.00%
Number of customer partners contributing more than 10% of total revenues	1	1	1
Accounts Receivable
Concentration Risk [Line Items]
Concentration risk percentage	20.00%	19.00%
Number of customer accounted for more than 10% of gross accounts receivable	1	1

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($)	1 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Commitment And Contingencies [Line Items]
Litigation reserves and payments		$ 0	$ 3,130,000
Litigation settlement	$ 750,000
Operating leases expiration term		2016 and 2023
Rent expense		$ 23,500,000	26,800,000	$ 32,300,000
Standby Letters of Credit
Commitment And Contingencies [Line Items]
Letters of credit outstanding amount		$ 1,500,000	$ 7,200,000

Commitments and Contingencies74

Commitments and Contingencies - Future Minimum Lease Payments Under Operating Lease (Details) $ in Thousands	Dec. 31, 2015USD ($)
Gross Minimum Lease Payments
Gross Minimum Lease Payments, 2016	$ 26,369
Gross Minimum Lease Payments, 2017	23,331
Gross Minimum Lease Payments, 2018	18,378
Gross Minimum Lease Payments, 2019	16,737
Gross Minimum Lease Payments, 2020	13,987
Gross Minimum Lease Payments, Thereafter	18,643
Total Gross Minimum Lease Payments	117,445
Sublease Receipts
Sublease Receipts, 2016	(2,499)
Sublease Receipts, 2017	(2,932)
Sublease Receipts, 2018	(2,802)
Sublease Receipts, 2019	(2,271)
Sublease Receipts, 2020	(1,050)
Sublease Receipts, Thereafter	(89)
Total Sublease Receipts	(11,643)
Net Minimum Lease Payments
Net Minimum Lease Payments, 2016	23,870
Net Minimum Lease Payments, 2017	20,399
Net Minimum Lease Payments, 2018	15,576
Net Minimum Lease Payments, 2019	14,466
Net Minimum Lease Payments, 2020	12,937
Net Minimum Lease Payments, Thereafter	18,554
Total Net Minimum Lease Payments	$ 105,802

Foreign Currency Derivatives -

Foreign Currency Derivatives - Notional Position by Currency of Outstanding Non-designated Hedges (Details) - Dec. 31, 2015 - Not Designated as Hedging Instrument € in Thousands, ₪ in Thousands, ¥ in Thousands, £ in Thousands, MXN in Thousands, BRL in Thousands, $ in Thousands	USD ($)	BRL	CNY (¥)	EUR (€)	GBP (£)	ILS (₪)	MXN
Buy | Original Maturities of 360 Days or Less | Brazilian Real
Derivative [Line Items]
Notional amount of foreign currency	$ 4,752	BRL 18,557
Buy | Original Maturities of 360 Days or Less | E U R
Derivative [Line Items]
Notional amount of foreign currency	30,365			€ 27,878
Buy | Original Maturities of 360 Days or Less | British Pound
Derivative [Line Items]
Notional amount of foreign currency	8,587				£ 5,800
Buy | Original Maturities of 360 Days or Less | Israeli Shekel
Derivative [Line Items]
Notional amount of foreign currency	2,728					₪ 10,530
Buy | Original Maturities of 360 Days or Less | Mexican Peso
Derivative [Line Items]
Notional amount of foreign currency	1,051						MXN 18,178
Buy | Original Maturities of Greater than 360 Days | Chinese Yuan
Derivative [Line Items]
Notional amount of foreign currency	13,364		¥ 85,718
Buy | Original Maturities of Greater than 360 Days | E U R
Derivative [Line Items]
Notional amount of foreign currency	21,249			17,876
Buy | Original Maturities of Greater than 360 Days | British Pound
Derivative [Line Items]
Notional amount of foreign currency	31,326				20,420
Buy | Original Maturities of Greater than 360 Days | Israeli Shekel
Derivative [Line Items]
Notional amount of foreign currency	17,012					66,322
Sell | Original Maturities of 360 Days or Less | Brazilian Real
Derivative [Line Items]
Notional amount of foreign currency	9,141	BRL 36,378
Sell | Original Maturities of 360 Days or Less | Chinese Yuan
Derivative [Line Items]
Notional amount of foreign currency	12,703		¥ 81,970
Sell | Original Maturities of 360 Days or Less | E U R
Derivative [Line Items]
Notional amount of foreign currency	33,998			31,275
Sell | Original Maturities of 360 Days or Less | British Pound
Derivative [Line Items]
Notional amount of foreign currency	8,214				5,555
Sell | Original Maturities of 360 Days or Less | Israeli Shekel
Derivative [Line Items]
Notional amount of foreign currency	14,961					₪ 57,984
Sell | Original Maturities of 360 Days or Less | Mexican Peso
Derivative [Line Items]
Notional amount of foreign currency	2,127						MXN 36,063
Sell | Original Maturities of Greater than 360 Days | E U R
Derivative [Line Items]
Notional amount of foreign currency	74,084			€ 62,745
Sell | Original Maturities of Greater than 360 Days | British Pound
Derivative [Line Items]
Notional amount of foreign currency	$ 38,446				£ 24,937

Foreign Currency Derivatives 76

Foreign Currency Derivatives - Effect of Non-Designated Hedges in Condensed Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Interest and other income (expense), net
Derivative Instruments Gain Loss [Line Items]
Amount of Gain or (Loss) Recognized in Income on Derivative	$ 5,440	$ 6,708	$ (411)

Foreign Currency Derivatives 77

Foreign Currency Derivatives - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Maximum duration of foreign exchange forward contracts designated as cash flow hedges	13 months
Unrealized Gain (Loss) in income due to ineffectiveness	$ 0	$ 0	$ 0

Foreign Currency Derivatives 78

Foreign Currency Derivatives - Effect of Derivative Instruments Designated as Cash Flow Hedges in Condensed Consolidated Statements of Operations (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Derivative Instruments Gain Loss [Line Items]
Foreign exchange contracts, Gain or (loss) recognized in OCI-effective portion, total		$ 4,954	$ 3,627	$ 1,374
Gain or (loss) reclassified from OCI into income- effective portion, total		6,379	2,341	2,308
Gain or (Loss) Recognized-Ineffective Portion and Amount Excluded from Effectiveness Testing	[1]	468	109	368
Product revenues
Derivative Instruments Gain Loss [Line Items]
Gain or (loss) reclassified from OCI into income- effective portion, total		14,028	1,170	207
Cost of revenues
Derivative Instruments Gain Loss [Line Items]
Gain or (loss) reclassified from OCI into income- effective portion, total		(1,597)	320	279
Sales and marketing
Derivative Instruments Gain Loss [Line Items]
Gain or (loss) reclassified from OCI into income- effective portion, total		(3,864)	772	233
Research and development
Derivative Instruments Gain Loss [Line Items]
Gain or (loss) reclassified from OCI into income- effective portion, total		(800)	86	1,425
General and administrative
Derivative Instruments Gain Loss [Line Items]
Gain or (loss) reclassified from OCI into income- effective portion, total		(1,388)	(7)	164
Interest and other income (expense), net
Derivative Instruments Gain Loss [Line Items]
Gain or (Loss) Recognized-Ineffective Portion and Amount Excluded from Effectiveness Testing	[1]	468	109	368
Foreign exchange contract
Derivative Instruments Gain Loss [Line Items]
Foreign exchange contracts, Gain or (loss) recognized in OCI-effective portion, total		$ 4,954	$ 3,627	$ 1,374
[1]	For the year ended December 31, 2015, 2014 and 2013, there were no gains or losses for the ineffective portion.

Effect of Derivative Instrument

Effect of Derivative Instruments Designated as Cash Flow Hedges in Condensed Consolidated Statements of Operations (Parenthetical) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Unrealized Gain (Loss) in income due to ineffectiveness	$ 0	$ 0	$ 0

Foreign Currency Derivatives 80

Foreign Currency Derivatives - Notional Position by Currency of Outstanding Cash Flow Hedges (Details) - Dec. 31, 2015 - Cash Flow Hedging € in Thousands, ₪ in Thousands, ¥ in Thousands, £ in Thousands, $ in Thousands	USD ($)	CNY (¥)	EUR (€)	GBP (£)	ILS (₪)
Buy | Chinese Yuan | Original Maturities of Greater than 360 Days
Derivative [Line Items]
Notional amount of foreign currency	$ 18,725	¥ 122,082
Buy | E U R | Original Maturities of Greater than 360 Days
Derivative [Line Items]
Notional amount of foreign currency	29,932		€ 26,824
Buy | British Pound | Original Maturities of Greater than 360 Days
Derivative [Line Items]
Notional amount of foreign currency	37,070			£ 24,379
Buy | Israeli Shekel | Original Maturities of 360 Days or Less
Derivative [Line Items]
Notional amount of foreign currency	6,467				₪ 24,900
Buy | Israeli Shekel | Original Maturities of Greater than 360 Days
Derivative [Line Items]
Notional amount of foreign currency	2,465				₪ 9,678
Sell | E U R | Original Maturities of Greater than 360 Days
Derivative [Line Items]
Notional amount of foreign currency	82,077		€ 73,655
Sell | British Pound | Original Maturities of Greater than 360 Days
Derivative [Line Items]
Notional amount of foreign currency	$ 51,741			£ 34,363

Foreign Currency Derivatives 81

Foreign Currency Derivatives - Derivative Instruments Measured at Gross Fair Value as Reflected in Condensed Consolidated Balance Sheets (Details) - Foreign exchange contract - USD ($) $ in Thousands		Dec. 31, 2015	Dec. 31, 2014
Derivatives Fair Value [Line Items]
Derivative assets		$ 10,396	$ 14,342
Derivative liabilities		6,031	8,175
Designated as Hedge Instruments
Derivatives Fair Value [Line Items]
Derivative assets	[1]	2,283	5,501
Derivative liabilities	[2]	2,269	4,041
Not Designated as Hedging Instrument
Derivatives Fair Value [Line Items]
Derivative assets	[1]	8,113	8,841
Derivative liabilities	[2]	$ 3,762	$ 4,134
[1]	All derivative assets are recorded as ”Prepaid expenses and other current assets” in the Consolidated Balance Sheets
[2]	All derivative liabilities are recorded as ”Other accrued liabilities” in the Consolidated Balance Sheets.

Foreign Currency Derivatives 82

Foreign Currency Derivatives - Offsetting of Derivative Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Offsetting Assets [Line Items]
Net Amounts Of Assets Presented In the Consolidated Balance Sheets	$ 10,396	$ 14,342
Foreign exchange contract
Offsetting Assets [Line Items]
Gross Amounts of Recognized Assets	10,396	14,342
Net Amounts Of Assets Presented In the Consolidated Balance Sheets	10,396	14,342
Gross Amounts of Assets Not Offset in the Consolidated Balance Sheets, Financial Instruments	(5,413)	(8,175)
Gross Amounts Not Offset in the Consolidated Balance Sheets, Net Amount	$ 4,983	$ 6,167

Foreign Currency Derivatives 83

Foreign Currency Derivatives - Offsetting of Derivative Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Offsetting Liabilities [Line Items]
Net Amounts Of Liabilities Presented In the Consolidated Balance Sheets	$ 6,031	$ 8,175
Foreign exchange contract
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	6,031	8,175
Net Amounts Of Liabilities Presented In the Consolidated Balance Sheets	6,031	8,175
Gross Amounts of Liabilities Not Offset in the Consolidated Balance Sheets, Financial Instruments	(5,413)	$ (8,175)
Gross Amounts Not Offset in the Consolidated Balance Sheets, Net Amount	$ 618

Stockholders' Equity - Share Re

Stockholders' Equity - Share Repurchase Programs - Additional Information (Details) - USD ($) shares in Millions	1 Months Ended			3 Months Ended	7 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Oct. 31, 2013	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Jul. 31, 2014	Dec. 04, 2013
Share Repurchases Program [Line Items]
Shares repurchase authorized amount									$ 200,000,000
Purchase of common stock, shares			27.4
Purchase of common stock, value						$ 105,288,000	$ 64,762,000	$ 487,180,000
Payments for repurchase of common stock						$ 89,953,000	$ 49,981,000	$ 505,898,000
Accelerated Share Repurchase Agreements
Share Repurchases Program [Line Items]
Shares repurchase authorized amount										$ 114,600,000
Purchase of common stock, shares	1.5	8		1.5	9.5		1.5	8
Payments for repurchase of common stock		$ 114,600,000
2014 Stock Repurchase Program
Share Repurchases Program [Line Items]
Purchase of common stock, shares						7	3.8	45.2
Purchase of common stock, value						$ 90,000,000	$ 50,000,000	$ 502,300,000
Share repurchase plan, remaining authorized amount						$ 60,100,000
Return of Capital Program
Share Repurchases Program [Line Items]
Shares repurchase authorized amount										$ 400,000,000

Stockholders' Equity - Changes

Stockholders' Equity - Changes in Accumulated Other Comprehensive Income (Loss) by Component (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning balance		$ 4,111	$ 4,372
Other comprehensive income (loss) before reclassifications		1,051	2,090
Amounts reclassified from accumulated other comprehensive income	[1]	(6,365)	(2,351)
Other comprehensive income (loss)		(5,314)	(261)	$ 176
Accumulated Other Comprehensive Income (loss) , Ending balance		(1,203)	4,111	4,372
Unrealized Gains and Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning balance		1,366	80
Other comprehensive income (loss) before reclassifications		4,954	3,627
Amounts reclassified from accumulated other comprehensive income	[1]	(6,379)	(2,341)
Other comprehensive income (loss)		(1,425)	1,286
Accumulated Other Comprehensive Income (loss) , Ending balance		(59)	1,366	80
Unrealized Gains and Losses on Available-for-Sale securities
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning balance		(52)	73
Other comprehensive income (loss) before reclassifications		(159)	(115)
Amounts reclassified from accumulated other comprehensive income	[1]	14	(10)
Other comprehensive income (loss)		(145)	(125)
Accumulated Other Comprehensive Income (loss) , Ending balance		(197)	(52)	73
Foreign Currency Translation
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated Other Comprehensive Income (Loss), Beginning balance		2,797	4,219
Other comprehensive income (loss) before reclassifications		(3,744)	(1,422)
Other comprehensive income (loss)		(3,744)	(1,422)
Accumulated Other Comprehensive Income (loss) , Ending balance		$ (947)	$ 2,797	$ 4,219
[1]	See Note 13 for details of gains and losses, net of taxes, reclassified out of accumulated other comprehensive (loss) income into net income related to cash flow hedges and each line item of net income affected by the reclassification. Gains and losses related to available-for-sale securities were reclassified into “Interest and other income (expense), net” in the Consolidated Statements of Operations, net of taxes.

Stock-Based Employee Benefit 86

Stock-Based Employee Benefit Plans - Equity Incentive Plans - Additional Information (Details) - shares	May. 26, 2011	May. 27, 2015	Jun. 05, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares reserved for issuance under the 2011 equity incentive plan, post stock split	19,800,000
Additional shares reserved for issuance under the 2011 equity incentive plan, post stock split		5,600,000	10,500,000
2004 or 1996 Equity Stock Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expired Cancelled or Forfeited Shares of Past Plans Added To Reserve of 2011 Plan Post Split Maximum	13,636,548

Stock-Based Employee Benefit 87

Stock-Based Employee Benefit Plans - Activity Under Share-Based Compensation Equity Incentive Plans (Details)	12 Months Ended
	Dec. 31, 2015shares	[1]
Shares Available for Grant
Shares Available for Grant, Beginning Balance	13,439,432
Additional shares available for grant	5,600,000	[2]
Performance shares granted	(1,709,336)	[3]
Performance shares forfeited	352,930
Restricted stock units granted	(5,050,548)
Restricted stock units forfeited	1,291,177
Options forfeited	10,193
Options expired	8,480
Shares Available for Grant, Ending Balance	13,942,328
[1]	For purpose of above table, shares are counted on a fungible basis (i.e., at a higher multiplier than one-for-one) for full value award activity.
[2]	Approved by stockholders on May 27, 2015
[3]	Includes 131,212 additional shares (202,066 shares applying the applicable fungible ratio) resulting from above target performance.

Stock-Based Employee Benefit 88

Stock-Based Employee Benefit Plans - Activity Under Share-Based Compensation Equity Incentive Plans (Parenthetical) (Details)	Dec. 31, 2015shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Additional common stock shares issued	131,212
Fungible Ratio
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Additional common stock shares issued	202,066

Stock-Based Employee Benefit 89

Stock-Based Employee Benefit Plans - Stock Options - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total pre-tax intrinsic value of options exercised	$ 0.1	$ 0.2	$ 0.3
Stock options exercisable	168,601
Stock options exercisable, weighted average exercise price	$ 11.61
Employee Stock Option Plans
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options granted expiry period	7 years
Stock options granted	0	0	0

Stock-Based Employee Benefit 90

Stock-Based Employee Benefit Plans - Activity Under Share-Based Compensation Stock Option Plans (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)$ / sharesshares
Outstanding Number of Shares
Outstanding Options, Number of Shares, Beginning Balance | shares	240,493
Options exercised | shares	(53,219)
Options forfeited | shares	(10,193)	[1]
Options expired | shares	(8,480)	[1]
Outstanding Options, Number of Shares, Ending Balance | shares	168,601
Options Weighted Avg Exercise Price
Options Weighted Avg Exercise Price, Beginning Balances | $ / shares	$ 11.62
Options exercised | $ / shares	11.65
Options forfeited | $ / shares	11.61
Options expired | $ / shares	11.74
Options Weighted Avg Exercise Price, Ending Balances | $ / shares	$ 11.61
Options Weighted Avg Contractual Term (Years), Ending Balances	3 years 4 months 28 days
Options Aggregate Intrinsic Value, Ending Balances | $	$ 165,685
[1]	For purpose of above table, shares are counted on a fungible basis (i.e., at a higher multiplier than one-for-one) for full value award activity.

Stock-Based Employee Benefit 91

Stock-Based Employee Benefit Plans - Options Outstanding and Exercisable by Range of Exercise Price (Details)	12 Months Ended
	Dec. 31, 2015$ / sharesshares
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Stock Options Number Outstanding | shares	168,601
Stock Options Exercisable Weighted Average Remaining Contractual Life (Yrs)	3 years 4 months 28 days
Weighted Average Exercise Price | $ / shares	$ 11.61
$ 0.75
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Stock Options Number Outstanding | shares	42
Stock Options Exercisable Weighted Average Remaining Contractual Life (Yrs)	4 years 22 days
Weighted Average Exercise Price | $ / shares	$ 0.75
$ 11.61
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Stock Options Number Outstanding | shares	168,559
Stock Options Exercisable Weighted Average Remaining Contractual Life (Yrs)	3 years 4 months 28 days
Weighted Average Exercise Price | $ / shares	$ 11.61

Stock-Based Employee Benefit 92

Stock-Based Employee Benefit Plans - Performance Shares and Restricted Stock Units - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award target performance rate, low	0.00%
Award target performance rate, high	150.00%
Unvested Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation cost not yet recognized	$ 33.4
Compensation cost not yet recognized, period for recognition	1 year
Total fair value of shares vested	$ 44.1	$ 46.1	$ 44.2
Minimum | Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period (in years)	1 year
Maximum | Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period (in years)	3 years

Stock-Based Employee Benefit 93

Stock-Based Employee Benefit Plans - Changes in Unvested Performance Shares, Restricted Stock Units and Non-Employee Director Restricted Stock Units (Details)	12 Months Ended
	Dec. 31, 2015$ / sharesshares
Number of shares
Unvested Shares Beginning Balance | shares	6,825,691	[1]
Unvested Shares Ending Balance | shares	6,742,183	[1]
Weighted Avg Grant Date Fair Value
Weighted Avg Grant Date Fair Value, Beginning Balance | $ / shares	$ 12.26
Weighted Avg Grant Date Fair Value, Ending Balance | $ / shares	$ 12.88
Performance Shares
Number of shares
Performance shares granted | shares	1,109,959	[1],[2]
Performance shares vested and issued | shares	(782,210)	[1]
Performance shares forfeited | shares	(217,108)	[1]
Weighted Avg Grant Date Fair Value
Granted, Weighted Avg Grant Date Fair Value | $ / shares	$ 14.07	[2]
Vested and issued, Weighted Avg Grant Date Fair Value | $ / shares	13.81
Forfeited, Weighted Avg Grant Date Fair Value | $ / shares	$ 12.54
Restricted Stock Units (RSUs)
Number of shares
Performance shares granted | shares	3,279,577	[1],[3]
Performance shares vested and issued | shares	(2,670,181)	[1]
Performance shares forfeited | shares	(803,545)	[1]
Weighted Avg Grant Date Fair Value
Granted, Weighted Avg Grant Date Fair Value | $ / shares	$ 13.49	[3]
Vested and issued, Weighted Avg Grant Date Fair Value | $ / shares	12.47
Forfeited, Weighted Avg Grant Date Fair Value | $ / shares	$ 12.34
[1]	For the purposes of this table, shares are counted on a one-for-one basis, not on a fungible share counting basis.
[2]	Includes 131,212 additional shares resulting from above target performance.
[3]	Includes 135,000 restricted stock units granted to non-employee directors.

Stock-Based Employee Benefit 94

Stock-Based Employee Benefit Plans - Changes in Unvested Performance Shares, Restricted Stock Units and Non-Employee Director Restricted Stock Units (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2015shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Restricted stock units granted to non-employee directors	135,000
Additional common stock shares issued	131,212

Stock-Based Employee Benefit 95

Stock-Based Employee Benefit Plans - Stock Option Plans and Employee Stock Purchase Plan - Additional Information (Details) - USD ($)		3 Months Ended	12 Months Ended
		Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares approved and available under the Employee Stock Purchase Plan	[1]		13,942,328	13,439,432
Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Purchase period			6 months
Offering period			2 years
Maximum percentage of employees' compensation deductions			15.00%
Discount from market price			85.00%
Maximum worth of shares per employee			$ 25,000
Maximum number of shares per employee			10,000
Number of shares approved and available under the Employee Stock Purchase Plan			9,164,481
Shares purchased under employee stock purchase plan, shares			2,150,586	2,944,069	2,904,287
Average price per share for shares purchased			$ 9.89	$ 7.55	$ 7.41
Cumulative incremental expenses incurred		$ 7,100,000
Incremental expenses recognized			$ 2,300,000
[1]	For purpose of above table, shares are counted on a fungible basis (i.e., at a higher multiplier than one-for-one) for full value award activity.

Stock-Based Employee Benefit 96

Stock-Based Employee Benefit Plans - Summary and Allocation of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 45,139	$ 47,960	$ 64,465
Tax benefit	8,171	9,492	11,174
Stock-based compensation expense related to employee equity awards and employee stock purchases, net of tax	36,968	38,468	53,291
Cost of product revenues
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	2,917	2,463	2,892
Cost of service revenues
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	4,711	4,293	5,852
Cost of revenues
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	7,628	6,756	8,744
Sales and marketing
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	13,187	14,893	26,570
Research and development
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	9,307	10,299	15,634
General and administrative
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	15,017	16,012	13,517
Operating Expenses
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 37,511	$ 41,204	$ 55,721

Stock-Based Employee Benefit 97

Stock-Based Employee Benefit Plans - Valuation Assumptions - Additional Information (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Employee Stock Purchase Plan | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average estimated fair value of share granted	$ 2.56	$ 2.80	$ 2.60
Employee Stock Purchase Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average estimated fair value of share granted	$ 4.27	$ 4.48	$ 4.57
Nonqualified Stock Option Plan And Employee Stock Purchase | Historical Volatility
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Blended volatility	50.00%
Nonqualified Stock Option Plan And Employee Stock Purchase | Implied Volatility
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Blended volatility	50.00%

Stock-Based Employee Benefit 98

Stock-Based Employee Benefit Plans - Significant Assumptions Used to Estimate Fair Value of Employee Stock Purchase Plan (Details) - Employee Stock Purchase Plan	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected volatility, minimum	28.08%	26.47%	42.40%
Expected volatility, maximum	30.73%	32.18%	48.89%
Risk-free interest rate, minimum	0.07%	0.05%	0.08%
Risk-free interest rate, maximum	0.68%	0.47%	0.35%
Expected dividends	0.00%	0.00%	0.00%
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected life (years)	5 months 27 days	6 months	6 months
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected life (years)	2 years	2 years	2 years

Employee Benefit Plan - Additio

Employee Benefit Plan - Additional Information (Details) - 401(k) Plan - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Cash matching percentage of matching contribution on rate of compensation employee's compensation	50.00%
Rate of compensation employees' contribution serving as base for matching contribution	6.00%
Employer's matching contribution vested percentage	100.00%
Employer's matching contribution vested rights description	after one year of employment
Company's contribution to employee benefit plans	$ 2.7	$ 2.8	$ 3

Income Taxes - Components of In

Income Taxes - Components of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income tax expense from continuing operations
Federal	$ 4,486	$ (2,843)	$ (953)
State	360	(235)	(72)
Foreign	8,176	8,352	8,604
Total current	13,022	5,274	7,579
Federal	202	(2,562)	(10,715)
State	43	(273)	(818)
Foreign	2,677	(1,483)	285
Total deferred	2,922	(4,318)	(11,248)
Total income tax expense (benefit) from continuing operations	$ 15,944	$ 956	(3,669)
Income tax expense from discontinued operations			$ 96

Income Taxes - Sources of Incom

Income Taxes - Sources of Income Before Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
United States	$ 15,998	$ (2,317)	$ (17,823)
Foreign	69,921	45,332	(4,381)
Income (loss) from continuing operations before provision for (benefit from) income taxes	$ 85,919	$ 43,015	$ (22,204)

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Tax Provision Computed Using Statutory Rates to Effective Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Federal tax at statutory rate	$ 30,071	$ 15,055	$ (7,771)
State taxes, net of federal benefit	1,129	(508)	(1,571)
Non-deductible share-based compensation expense	1,138	(346)	2,900
Foreign income at tax rates different than U.S. rates	(17,715)	(14,025)	7,104
Changes in reserves for uncertain tax positions	(751)	(756)	(2,497)
Research and development tax credit	(1,612)	(1,898)	(4,243)
Domestic production activities deduction		(22)	(757)
Non-deductible executive compensation expense	725	778	460
Subpart F income	1,018	679	716
Non-deductible acquisition and divestiture costs	146	(4)	(355)
Sale of intellectual property	947	2,115	2,947
Foreign tax credit	(625)	(317)	(359)
Other	1,473	205	(243)
Total income tax expense (benefit) from continuing operations	$ 15,944	$ 956	$ (3,669)

Income Taxes - Summary of Tempo

Income Taxes - Summary of Temporary Differences Resulting in Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Property and equipment, net, principally due to difference in depreciation	$ 9,154	$ 7,534
Acquired intangibles	4,942	4,490
Inventory	5,824	5,685
Restructuring reserves	7,222	13,722
Deferred revenue	11,852	10,964
Other reserves	21,791	20,400
Share-based compensation	10,616	11,910
Net operating loss and capital loss carryforwards	6,512	2,535
Tax credit carryforwards	25,512	21,237
Deferred tax asset	103,425	98,477
Capitalized research and development costs	(560)	(766)
Acquired intangibles	(1,759)	(1,843)
Deferred tax asset before valuation allowance	101,106	95,868
Valuation allowance	(11,375)	(3,216)
Deferred tax asset, net of valuation allowance	$ 89,731	$ 92,652

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Information [Line Items]
Net operating losses	$ 6,300
Capital loss carry-forwards	300
Tax credit carryforwards	25,512	$ 21,237
Valuation allowance related to operating losses and credits	11,375	3,216
Deferred tax assets, tax credit carryforwards, research	3,000
Cumulative amount of earnings upon which U.S. income tax has not been provided	403,800
Reductions of income taxes payable resulting from exercise of employee stock options and other employee stock programs	2,700
Income tax benefit attributable to tax incentives	$ 3,900	$ 3,100	$ 1,700
income tax benefit attributable to tax incentives, per share	$ 0.03	$ 0.02	$ 1.01
Accrued interest and penalties related to uncertain tax positions	$ 1,900	$ 1,600
Anticipated reduction in uncertain tax positions	1,300
Expired at the end of Fiscal 2016
Income Tax Information [Line Items]
Income tax benefit attributable to tax incentives	2,700
Expired at the end of Fiscal 2015
Income Tax Information [Line Items]
Income tax benefit attributable to tax incentives		200
U.S. And Foreign Jurisdictions
Income Tax Information [Line Items]
Recorded reserve releases	1,900	$ 900	$ 2,400
Acquisition
Income Tax Information [Line Items]
Tax credit carryforwards	100
Net operating loss carryforwards related to acquisitions	1,400
Deferred tax assets net operating loss and other deferred tax assets
Income Tax Information [Line Items]
Valuation allowance related to operating losses and credits	8,400
Deferred tax assets net operating loss
Income Tax Information [Line Items]
Valuation allowance related to operating losses and credits	4,400
Other deferred tax assets
Income Tax Information [Line Items]
Valuation allowance related to operating losses and credits	$ 4,000

Income Taxes - Aggregate Change

Income Taxes - Aggregate Changes in Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Beginning balance	$ 21,642	$ 22,012	$ 23,049
Additions based on tax positions taken during the current period	441	531	1,414
Reductions related to a lapse of applicable statue of limitations	(1,956)	(901)	(2,451)
Ending balance	$ 20,127	$ 21,642	$ 22,012

Net Income (Loss) Per Share - R

Net Income (Loss) Per Share - Reconciliation of Numerator and Denominator of Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Numerator
Net income (loss) from continuing operations	$ 69,975	$ 42,059	$ (18,535)
Gain from sale of discontinued operations, net of taxes			459
Net income (loss)	$ 69,975	$ 42,059	$ (18,076)
Denominator
Weighted average shares outstanding, basic	133,581	136,801	167,272
Effect of dilutive potential common shares	3,813	5,204
Weighted average shares outstanding, diluted	137,394	142,005	167,272
Basic net income (loss) per share:
Net income (loss) per share from continuing operations	$ 0.52	$ 0.31	$ (0.11)
Basic net income (loss) per share	0.52	0.31	(0.11)
Diluted net income (loss) per share:
Net income (loss) per share from continuing operations	0.51	0.30	(0.11)
Diluted net income (loss) per share	$ 0.51	$ 0.30	$ (0.11)
Antidilutive employee stock-based awards, excluded	449	213	5,045

Net Income (Loss) Per Share Dis

Net Income (Loss) Per Share Disclosures - Additional Information (Details) - shares shares in Millions	1 Months Ended			3 Months Ended	7 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Oct. 31, 2013	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Shares Repurchased Through Agreements Included From Computation Of Earnings Per Share [Line Items]
Purchase of common stock, shares			27.4
Tender Offer expiration date							Oct. 31, 2013
Accelerated Share Repurchase Agreements
Shares Repurchased Through Agreements Included From Computation Of Earnings Per Share [Line Items]
Purchase of common stock, shares	1.5	8		1.5	9.5	1.5	8

Business Segment Information -

Business Segment Information - Additional Information (Details)	12 Months Ended
	Dec. 31, 2015Location
Segment Reporting [Abstract]
Business organized number of geographical theatres (area)	3
Number of foreign countries holding more than 10% of total net fixed assets	No single country outside of the United States has more than 10% of total net fixed assets for 2015 and 2014

Business Segment Information109

Business Segment Information - Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenue	$ 1,267,225	$ 1,345,154	$ 1,368,389
% of total revenue	100.00%	100.00%	100.00%
Contribution margin	$ 525,738	$ 561,056	$ 549,934
% of segment revenue	41.00%	42.00%	40.00%
Gross accounts receivable	$ 242,911	$ 214,664
% of total gross accounts receivable	100.00%	100.00%
Americas
Segment Reporting Information [Line Items]
Revenue	$ 617,211	$ 662,533	$ 694,522
% of total revenue	49.00%	49.00%	50.00%
Contribution margin	$ 236,482	$ 270,265	$ 270,786
% of segment revenue	38.00%	41.00%	39.00%
Gross accounts receivable	$ 97,742	$ 88,316
% of total gross accounts receivable	40.00%	41.00%
EMEA
Segment Reporting Information [Line Items]
Revenue	$ 336,894	$ 349,821	$ 338,035
% of total revenue	26.00%	26.00%	25.00%
Contribution margin	$ 141,744	$ 150,426	$ 142,686
% of segment revenue	42.00%	43.00%	42.00%
Gross accounts receivable	$ 78,726	$ 62,540
% of total gross accounts receivable	33.00%	29.00%
APAC
Segment Reporting Information [Line Items]
Revenue	$ 313,120	$ 332,800	$ 335,832
% of total revenue	25.00%	25.00%	25.00%
Contribution margin	$ 147,512	$ 140,365	$ 136,462
% of segment revenue	47.00%	42.00%	41.00%
Gross accounts receivable	$ 66,443	$ 63,808
% of total gross accounts receivable	27.00%	30.00%

Business Segment Information110

Business Segment Information - Financial Information by Reportable Segment (Parenthetical) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)Customer	Dec. 31, 2014USD ($)Customer	Dec. 31, 2013USD ($)Customer
Segment Reporting Information [Line Items]
Revenue	$ 1,267,225	$ 1,345,154	$ 1,368,389
Customer Concentration Risk | United States
Segment Reporting Information [Line Items]
Revenue	528,000	565,900	589,600
Customer Concentration Risk | China
Segment Reporting Information [Line Items]
Revenue	$ 143,400	$ 144,700	$ 147,300
Customer Concentration Risk | Total Net Revenues | ScanSource Communications
Segment Reporting Information [Line Items]
Concentration risk percentage	20.00%	17.00%	16.00%
Number of customer partners contributing more than 10% of total revenues | Customer	1	1	1
Customer Concentration Risk | Accounts Receivable | ScanSource Communications
Segment Reporting Information [Line Items]
Concentration risk percentage	20.00%	19.00%
Number of customer accounted for more than 10% of gross accounts receivable | Customer	1	1

Business Segment Information111

Business Segment Information - Reconciliation of Segment Information to Consolidated Totals (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting [Abstract]
Segment contribution margin	$ 525,738	$ 561,056	$ 549,934
Corporate and unallocated costs	(370,368)	(409,700)	(430,471)
Stock-based compensation	(45,139)	(47,960)	(64,465)
Effect of stock-based compensation cost on warranty expense	(336)	(494)	(547)
Amortization of purchased intangibles	(10,451)	(12,816)	(19,750)
Restructuring costs	(11,096)	(40,347)	(48,470)
Litigation reserves and payments	0	(3,130)
Transaction-related costs	(574)	(156)	(3,424)
Interest and other income (expense), net	(1,855)	(3,438)	(5,011)
Income (loss) from continuing operations before provision for (benefit from) income taxes	$ 85,919	$ 43,015	$ (22,204)

Business Segment Information112

Business Segment Information - Revenues by Groups of Similar Products and Services (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Entity Wide Information Revenue From External Customer [Line Items]
Net Revenues	$ 1,267,225	$ 1,345,154	$ 1,368,389
UC Group Systems
Entity Wide Information Revenue From External Customer [Line Items]
Net Revenues	772,744	868,311	904,923
UC Personal Devices
Entity Wide Information Revenue From External Customer [Line Items]
Net Revenues	267,249	236,781	219,103
UC Platform
Entity Wide Information Revenue From External Customer [Line Items]
Net Revenues	$ 227,232	$ 240,062	$ 244,363

Business Segment Information113

Business Segment Information - Fixed Assets, Net of Accumulated Depreciation by Geographical Area (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Property and equipment, net	$ 101,853	$ 109,195
United States
Segment Reporting Information [Line Items]
Property and equipment, net	77,082	78,692
EMEA
Segment Reporting Information [Line Items]
Property and equipment, net	10,149	11,254
APAC
Segment Reporting Information [Line Items]
Property and equipment, net	13,486	17,663
Other
Segment Reporting Information [Line Items]
Property and equipment, net	$ 1,136	$ 1,586

Valuation and Qualifying Acc114

Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for doubtful accounts
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	$ 3,040	$ 2,827	$ 2,921
Additions	0	600	0
Deductions	(17)	(387)	(94)
Balance at End of Year	3,023	3,040	2,827
Sales returns and allowances
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	37,350	34,654	37,422
Additions	135,395	86,649	93,101
Deductions	(124,378)	(83,953)	(95,869)
Balance at End of Year	48,367	37,350	34,654
Income tax valuation allowance
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	3,216	3,359	3,161
Additions	8,620	0	460
Deductions	(461)	(143)	(262)
Balance at End of Year	$ 11,375	$ 3,216	$ 3,359