Plantronics (POLY) 10-Q 27 Jan 14 2014 Q3 Quarterly report Financial data

DOCUMENT_AND_ENTITY_INFORMATIO

DOCUMENT AND ENTITY INFORMATION Document (USD $)	9 Months Ended
	Dec. 31, 2013	Jan. 25, 2014	Sep. 28, 2013
Document and Entity Information [Abstract]	'	'	'
Entity Registrant Name	'PLANTRONICS INC /CA/	'	'
Entity Central Index Key	'0000914025	'	'
Current Fiscal Year End Date	'--03-31	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Document Type	'10-Q	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'Q3	'	'
Amendment Flag	'false	'	'
Entity Common Stock, Shares Outstanding	'	42,998,159	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Public Float	'	'	$2,043,949,950

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $)	Dec. 31, 2013	Mar. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$235,534	$228,776
Short-term investments	86,397	116,581
Accounts receivable, net	133,379	128,209
Inventory, net	66,569	67,435
Deferred tax assets	14,351	10,120
Other current assets	16,875	15,369
Total current assets	553,105	566,490
Long-term investments	106,800	80,261
Property, plant, and equipment, net	124,933	99,111
Goodwill and purchased intangibles, net	16,215	16,440
Other assets	2,317	2,303
Total assets	803,370	764,605
Current liabilities:	'	'
Accounts payable	26,728	37,067
Accrued liabilities	66,615	66,419
Total current liabilities	93,343	103,486
Deferred tax liabilities	2,024	1,742
Long-term income taxes payable	13,460	12,005
Other long-term liabilities	2,295	925
Total liabilities	111,122	118,158
Commitments and contingencies (Note 7)	'	'
Stockholders' equity:	'	'
Common stock	768	757
Additional paid-in capital	652,503	612,283
Accumulated other comprehensive income	1,773	5,567
Retained earnings	99,713	28,344
Total stockholders' equity before treasury stock	754,757	646,951
Less: Treasury stock, at cost	-62,509	-504
Total stockholders' equity	692,248	646,447
Total liabilities and stockholders' equity	$803,370	$764,605

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Net revenues	$212,739	$197,402	$609,537	$558,047
Cost of revenues	102,412	95,238	293,964	260,959
Gross profit	110,327	102,164	315,573	297,088
Operating expenses:	'	'	'	'
Research, development, and engineering	21,018	20,248	62,328	59,525
Selling, general, and administrative	51,467	45,442	148,071	134,476
Restructuring and other related charges	0	1,868	547	1,868
Total operating expenses	72,485	67,558	210,946	195,869
Operating income	37,842	34,606	104,627	101,219
Interest and other income, net	186	177	59	464
Income before income taxes	38,028	34,783	104,686	101,683
Income tax expense	3,645	6,577	20,212	23,990
Net income	$34,383	$28,206	$84,474	$77,693
Earnings per common share:	'	'	'	'
Basic	$0.81	$0.68	$1.98	$1.87
Diluted	$0.80	$0.66	$1.94	$1.82
Shares used in computing basic earnings per common share	42,441	41,745	42,647	41,629
Shares used in computing diluted earnings per common share	43,228	42,618	43,554	42,579
Cash dividends declared per common share	$0.10	$0.10	$0.30	$0.30

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Net income	$34,383	$28,206	$84,474	$77,693
Other comprehensive income (loss), net of tax:	'	'	'	'
Foreign currency translation adjustments	-73	61	-114	-58
Unrealized cash flow hedge gains (losses) arising during the period	-218	-944	-3,794	590
Net (gains) losses reclassified into income for revenue hedges	114	-262	258	-3,281
Net (gains) losses reclassified into income for cost of revenue hedges	63	-399	-176	-109
Net unrealized losses on cash flow hedges	-41	-1,605	-3,712	-2,800
Unrealized holding gains (losses) during the period	-1	-33	5	25
Other comprehensive loss	-115	-1,577	-3,821	-2,833
Comprehensive income	$34,268	$26,629	$80,653	$74,860

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES	'	'
Net income	$84,474	$77,693
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	11,671	12,104
Stock-based compensation	16,996	14,173
Provision for excess and obsolete inventories	4,419	1,306
Deferred income taxes	530	-1,030
Excess tax benefit from stock-based compensation	-4,434	-930
Other operating activities	1,345	1,639
Changes in assets and liabilities:	'	'
Accounts receivable, net	-6,539	-1,215
Inventory, net	-3,135	-13,943
Current and other assets	826	-4,928
Accounts payable	-10,339	1,723
Accrued liabilities	1,388	3,840
Income taxes	-5,080	2,822
Cash provided by operating activities	92,122	93,254
CASH FLOWS FROM INVESTING ACTIVITIES	'	'
Proceeds from sales of investments	89,682	38,078
Proceeds from maturities of investments	95,210	117,665
Purchase of investments	-181,836	-188,062
Acquisitions, net of cash acquired	0	-1,926
Capital expenditures	-37,657	-29,378
Cash used for investing activities	-34,601	-63,623
CASH FLOWS FROM FINANCING ACTIVITIES	'	'
Repurchase of common stock	-56,754	-23,626
Proceeds from issuances under stock-based compensation plans	19,599	13,091
Employees' tax withheld and paid for restricted stock and restricted stock units	-6,014	-2,848
Proceeds from revolving line of credit	0	18,000
Repayments of revolving line of credit	0	-35,000
Payment of cash dividends	-13,105	-12,756
Excess tax benefit from stock-based compensation	4,434	930
Cash used for financing activities	-51,840	-42,209
Effect of exchange rate changes on cash and cash equivalents	1,077	-101
Net increase (decrease) in cash and cash equivalents	6,758	-12,679
Cash and cash equivalents at beginning of period	228,776	209,335
Cash and cash equivalents at end of period	$235,534	$196,656

BASIS_OF_PRESENTATION

BASIS OF PRESENTATION	9 Months Ended
	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
BASIS OF PRESENTATION	'
	BASIS OF PRESENTATION
	The accompanying unaudited condensed consolidated financial statements (“financial statements”) of Plantronics, Inc. (“Plantronics” or "the Company”) have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) applicable to interim financial information.  Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") have been condensed or omitted pursuant to such rules and regulations.  In the opinion of management, the financial statements have been prepared on a basis consistent with the Company's March 31, 2013 audited consolidated financial statements and include all adjustments, consisting of normal recurring adjustments, necessary to fairly state the information set forth herein.  The financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2013, which was filed with the SEC on May 24, 2013.  The results of operations for the interim period ended December 31, 2013 are not indicative of the results to be expected for the entire fiscal year or any future period.
	The financial statements include the accounts of the Company and its wholly owned subsidiaries.  All intercompany balances and transactions have been eliminated.
	The Company’s fiscal year ends on the Saturday closest to the last day of March.  The Company’s current fiscal year ends on March 29, 2014 and consists of 52 weeks. The Company's prior fiscal year ended on March 30, 2013 and also consisted of 52 weeks.  The Company’s results of operations for the three and nine months ended December 28, 2013 and December 29, 2012 both contain 13 and 39 weeks, respectively. For purposes of presentation, the Company has indicated its accounting year as ending on March 31 and its interim quarterly periods as ending on the applicable calendar month end.
	Out of Period Corrections of Immaterial Errors
	During the third quarter of fiscal 2014, the Company identified immaterial out of period errors related to its estimated warranty obligation and return material authorization ("RMA") reserves, the correction of which decreased its cost of revenues by approximately $2.4 million and increased net income by approximately $2.1 million. The Company recorded these corrections in the quarter ended December 31, 2013 because the errors were not material, either individually or in the aggregate, to any of the prior reporting periods. In addition, the Company expects the cumulative amount of these adjustments, both individually and in the aggregate, will not be material for the fiscal year ending March 31, 2014.

RECENT_ACCOUNTING_PRONOUNCEMEN

RECENT ACCOUNTING PRONOUNCEMENTS	9 Months Ended
	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
RECENT ACCOUNTING PRONOUNCEMENTS	'
	RECENT ACCOUNTING PRONOUNCEMENTS
	Recently Issued Pronouncements
	Recent accounting pronouncements issued by the Financial Accounting Standards Board ("FASB") and the SEC did not and are not expected by the Company to have a material impact on the Company's present or future consolidated financial statements.

CASH_CASH_EQUIVALENTS_AND_INVE

CASH, CASH EQUIVALENTS, AND INVESTMENTS	9 Months Ended
	Dec. 31, 2013
CASH, CASH EQUIVALENTS AND INVESTMENTS [Abstract]	'
CASH, CASH EQUIVALENTS, AND INVESTMENTS	'
	CASH, CASH EQUIVALENTS, AND INVESTMENTS
	The following table represents the Company’s cash, cash equivalents, and investments as of December 31, 2013 and March 31, 2013:
	(in thousands)	December 31, 2013									March 31, 2013
		Amortized		Gross		Gross			Fair		Amortized		Gross		Gross			Fair
		Cost		Unrealized		Unrealized			Value		Cost		Unrealized		Unrealized			Value
				Gains		Losses							Gains		Losses
	Cash and cash equivalents:
	Cash	$	225,310	$	—	$	—		$	225,310	$	118,881	$	—	$	—		$	118,881
	Cash equivalents	10,223		1		—			10,224		109,895		—		—			109,895
	Total cash and cash equivalents	$	235,533	$	1	$	—		$	235,534	$	228,776	$	—	$	—		$	228,776
	Short-term investments (due in 1 year or less):
	U.S. Treasury Bills and Government Agency Securities	$	19,227	$	6	$	(1	)	$	19,232	$	66,092	$	18	$	(3	)	$	66,107
	Commercial paper	43,792		13		—			43,805		15,670		9		—			15,679
	Corporate bonds	22,353		6		(2		)	22,357		34,766		31		(2		)	34,795
	Certificates of deposit ("CDs")	1,002		1		—			1,003		—		—		—			—
	Total short-term investments	$	86,374	$	26	$	(3	)	$	86,397	$	116,528	$	58	$	(5	)	$	116,581
	Long-term investments (due in 1 to 3 years):
	U.S. Treasury Bills and Government Agency Securities	$	36,929	$	23	$	(14	)	$	36,938	$	55,317	$	42	$	(1	)	$	55,358
	Corporate bonds	69,772		116		(26		)	69,862		23,878		23		(3		)	23,898
	CDs	—		—		—			—		1,002		3		—			1,005
	Total long-term investments	$	106,701	$	139	$	(40	)	$	106,800	$	80,197	$	68	$	(4	)	$	80,261
	Total cash, cash equivalents and investments	$	428,608	$	166	$	(43	)	$	428,731	$	425,501	$	126	$	(9	)	$	425,618
	As of December 31, 2013 and March 31, 2013, all of the Company’s investments are classified as available-for-sale securities.  The carrying value of available-for-sale securities included in cash equivalents approximates fair value because of the short maturity of those instruments.
	The Company did not incur any material realized or unrealized net gains or losses in the three and nine months ended December 31, 2013 and 2012.

FAIR_VALUE_MEASUREMENTS

FAIR VALUE MEASUREMENTS	9 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
FAIR VALUE MEASUREMENTS	'
	FAIR VALUE MEASUREMENTS
	The following tables present the Company’s cash and financial assets and liabilities, measured at fair value, by level within the fair value hierarchy as of December 31, 2013 and March 31, 2013.
	Fair Values as of December 31, 2013:
	(in thousands)	Level 1		Level 2		Total
	Cash and cash equivalents:
	Cash	$	225,310	$	—	$	225,310
	Mutual funds	1,227		—		1,227
	Commercial paper	—		8,997		8,997
	Short-term investments:
	Government Agency Securities	—		19,232		19,232
	Commercial paper	—		43,805		43,805
	Corporate bonds	—		22,357		22,357
	CDs	—		1,003		1,003
	Long-term investments:
	Government Agency Securities	—		36,938		36,938
	Corporate bonds	—		69,862		69,862
	Other current assets:
	Derivative assets	—		967		967
	Total assets measured at fair value	$	226,537	$	203,161	$	429,698
	Accrued liabilities:
	Derivative liabilities	$	—	$	3,841	$	3,841
	Fair Values as of March 31, 2013:
	(in thousands)	Level 1		Level 2		Total
	Cash and cash equivalents:
	Cash	$	118,881	$	—	$	118,881
	U.S. Treasury Bills	104,995		—		104,995
	Commercial paper	—		4,900		4,900
	Short-term investments:
	U.S. Treasury Bills and Government Agency Securities	7,243		58,864		66,107
	Commercial paper	—		15,679		15,679
	Corporate bonds	—		34,795		34,795
	Long-term investments:
	U.S. Treasury Bills and Government Agency Securities	22,904		32,454		55,358
	Corporate bonds	—		23,898		23,898
	CDs	—		1,005		1,005
	Other current assets:
	Derivative assets	—		1,665		1,665
	Total assets measured at fair value	$	254,023	$	173,260	$	427,283
	Accrued liabilities:
	Derivative liabilities	$	3	$	291	$	294
	There were no transfers between fair value measurement levels during the three and nine months ended December 31, 2013 and 2012.
	Refer to Note 12, Foreign Currency Derivatives, which discloses the nature of the Company's derivative assets and liabilities as of December 31, 2013 and March 31, 2013.
	All financial assets and liabilities are recognized or disclosed at fair value in the financial statements. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement:
	Level 1
	The Company's Level 1 financial assets consist of Mutual Funds. The fair value of Level 1 financial instruments is measured based on the quoted market price of identical securities.
	Level 2
	The Company's Level 2 financial assets and liabilities consist of Government Agency Securities, Commercial Paper, Corporate Bonds, CDs, and derivative foreign currency call and put option contracts and cross-currency swaps. The fair value of Level 2 investment securities is determined based on other observable inputs, including multiple non-binding quotes from independent pricing services. Non-binding quotes are based on proprietary valuation models that are prepared by the independent pricing services and use algorithms based on inputs such as observable market data, quoted market prices for similar securities, issuer spreads, and internal assumptions of the broker. The Company corroborates the reasonableness of non-binding quotes received from the independent pricing services using a variety of techniques depending on the underlying instrument, including: (i) comparing them to actual experience gained from the purchases and maturities of investment securities, (ii) comparing them to internally developed cash flow models based on observable inputs, and (iii) monitoring changes in ratings of similar securities and the related impact on fair value. The fair value of Level 2 derivative foreign currency contracts is determined using pricing models that use observable market inputs.

DETAILS_OF_CERTAIN_BALANCE_SHE

DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS	9 Months Ended
	Dec. 31, 2013
Balance Sheet Related Disclosures [Abstract]	'
DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS	'
	DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS
	Accounts receivable, net:
		December 31,			March 31,
	(in thousands)	2013			2013
	Accounts receivable	$	159,317		$	151,250
	Provisions for returns	(8,912		)	(8,957		)
	Provisions for promotions, rebates, and other	(16,814		)	(13,675		)
	Provisions for doubtful accounts and sales allowances	(212		)	(409		)
	Accounts receivable, net	$	133,379		$	128,209
	Inventory, net:
		December 31,			March 31,
	(in thousands)	2013			2013
	Raw materials	$	34,258		$	28,743
	Work in process	432			82
	Finished goods	31,879			38,610
	Inventory, net	$	66,569		$	67,435
	Accrued Liabilities:
		December 31,			March 31,
	(in thousands)	2013			2013
	Employee compensation and benefits	$	31,779		$	29,796
	Warranty obligation	7,963			13,410
	Accrued advertising, sales, and marketing	4,847			3,735
	Accrued other	22,026			19,478
	Accrued liabilities	$	66,615		$	66,419
	The Company's warranty obligation is included as a component of accrued liabilities in the condensed consolidated balance sheets. Changes in the warranty obligation during the nine months ended December 31, 2013 were as follows:
		Nine Months Ended			Nine Months Ended
	(in thousands)	December 31, 2013			December 31, 2012
	Warranty obligation at beginning of period	$	13,410		$	13,346
	Correction of immaterial prior period error (2)	(5,042		)	—
	Warranty provision relating to products shipped	6,851			11,856
	Deductions for warranty claims processed	(7,256		)	(12,147		)
	Warranty obligation at end of period	$	7,963		$	13,055
	(2)Refer to Note 1, Basis of Presentation, for details about the prior period error corrected in the quarter ended December 31, 2013.

GOODWILL_AND_PURCHASED_INTANGI

GOODWILL AND PURCHASED INTANGIBLE ASSETS	9 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
GOODWILL	'
	GOODWILL
	Goodwill as of December 31, 2013 and March 31, 2013 was $15.5 million, net of accumulated impairment of $54.6 million.

COMMITMENTS_AND_CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	9 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
COMMITMENTS AND CONTINGENCIES	'
	COMMITMENTS AND CONTINGENCIES
	Unconditional Purchase Obligations
	The Company contracts with several outsourcing partners to manufacture sub-assemblies for the Company’s products. These outsourcing partners acquire components and build product based on demand information supplied by the Company, which typically covers periods up to 270 days. The Company also obtains individual components for its products from a wide variety of individual suppliers. Consistent with industry practice, the Company acquires components through a combination of purchase orders, supplier contracts, and open orders based on projected demand information. As of December 31, 2013, the Company had outstanding off-balance sheet third-party manufacturing, component purchase, and other general and administrative commitments of $215.7 million.
	Other Guarantees and Obligations
	In the ordinary course of business, the Company may provide indemnifications of varying scope and terms to customers, vendors, lessors, business partners, purchasers of assets or subsidiaries and other parties with respect to certain matters, including, but not limited to, losses arising out of the Company's breach of agreements or representations and warranties made by the Company, services to be provided by the Company, intellectual property infringement claims made by third parties or, with respect to the sale of assets or a subsidiary, matters related to the Company's conduct of business and tax matters prior to the sale. From time to time, the Company indemnifies customers against combinations of loss, expense, or liability arising from various triggering events relating to the sale and use of its products and services.  In addition, the Company also provides protection to customers against claims related to undiscovered liabilities, additional product liability, or environmental obligations.  In addition, the Company has entered into indemnification agreements with its directors and certain of its officers that will require the Company, among other things, to indemnify them against certain liabilities that may arise by reason of their status or service as directors or officers of the Company. The Company maintains director and officer insurance, which may cover certain liabilities arising from its obligation to indemnify its directors and officers in certain circumstances. It is not possible to determine the aggregate maximum potential loss under these indemnification agreements due to the limited history of prior indemnification claims and the unique facts and circumstances involved in each particular agreement. Such indemnification agreements might not be subject to maximum loss clauses. Historically, the Company has not incurred material costs as a result of obligations under these agreements and it has not accrued any liabilities related to such indemnification obligations in the condensed consolidated financial statements.
	Claims and Litigation
	On October 12, 2012, GN Netcom, Inc. sued Plantronics, Inc. in the U.S. District Court for the District of Delaware, alleging violations of the Sherman Act, the Clayton Act, and Delaware common law. In its complaint, GN specifically alleges four causes of action: monopolization, attempted monopolization, concerted action in restraint of trade, and tortious interference with business relations. GN claims that the Company dominates the market for headsets sold into contact centers in the United States and that a critical channel for sales of headsets to contact centers is through a limited network of specialized independent distributors (“SIDs”). GN asserts that the Company attracts SIDs through exclusive distributor agreements and alleges that the use of these agreements is illegal. The Company denies each of the allegations in the complaint and is vigorously defending itself. Given the preliminary nature of the case, the Company is unable to estimate an amount or range of any reasonably possible losses resulting from these allegations.
	In addition, the Company is involved in various legal proceedings arising in the normal course of conducting business. For such legal proceedings, where applicable, the Company has accrued an amount that reflects the aggregate liability deemed probable and estimable, but this amount is not material to the Company's financial condition, results of operations, or cash flows. With respect to proceedings for which no accrual has been made, the Company is not able to estimate an amount or range of any reasonably possible additional losses because of the preliminary nature of many of these proceedings, the difficulty in ascertaining the applicable facts relating to many of these proceedings, the variable treatment of claims made in many of these proceedings, and the difficulty of predicting the settlement value of many of these proceedings. However, based upon the Company's historical experience, the resolution of these proceedings is not expected to have a material effect on the Company's financial condition, results of operations or cash flows. The Company may incur substantial legal fees, which are expensed as incurred, in defending against these legal proceedings.

CREDIT_AGREEMENT

CREDIT AGREEMENT	9 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
CREDIT AGREEMENT	'
	CREDIT AGREEMENT
	On May 9, 2011, the Company entered into a credit agreement with Wells Fargo Bank, National Association ("the Bank"), which was most recently amended on January 27, 2014 to extend its term to May 9, 2017 (as amended, "the Credit Agreement"). The Credit Agreement provides for a $100.0 million unsecured revolving line of credit ("line of credit") and, if requested by the Company, the Bank may increase its commitment thereunder by up to $100.0 million, for a total facility size of up to $200.0 million. As of December 31, 2013 and March 31, 2013, the Company had no outstanding borrowings under the line of credit.
	Loans under the Credit Agreement bear interest at the election of the Company (i) at the Bank's announced prime rate less 1.50% per annum, (ii) at a daily one month LIBOR rate plus 1.10% per annum or (iii) at an adjusted LIBOR rate, for a term of one, three or six months, plus 1.10% per annum. Interest on the loans is payable quarterly in arrears. In addition, the Company pays a fee equal to 0.20% per annum on the average daily unused amount of the line of credit, which is payable quarterly in arrears.
	Principal, together with accrued and unpaid interest, is due on the amended maturity date, May 9, 2017. The Company may prepay the loans and terminate the commitments in whole at any time, without premium or penalty, subject to reimbursement of certain costs in the case of LIBOR loans.
	The Company's obligations under the Credit Agreement are guaranteed by the Company's domestic subsidiaries, subject to certain exceptions.
	The line of credit requires the Company to comply with a maximum ratio of funded debt to earnings before interest, taxes, depreciation and amortization ("EBITDA") and a minimum EBITDA coverage ratio, in each case, at each fiscal quarter end and determined on a rolling four-quarter basis. In addition, the Company and its subsidiaries are required to maintain unrestricted cash, cash equivalents, and marketable securities plus availability under the Credit Agreement at the end of each fiscal quarter of at least $200.0 million.
	The line of credit contains affirmative covenants, including covenants regarding the payment of taxes and other liabilities, maintenance of insurance, reporting requirements and compliance with applicable laws and regulations. The line of credit also contains negative covenants, among other things, limiting, subject to certain monetary thresholds, the ability of the Company to incur debt, make capital expenditures, grant liens, make acquisitions, and make investments. The events of default under the line of credit include payment defaults, cross defaults with certain other indebtedness, breaches of covenants, judgment defaults, and bankruptcy and insolvency events involving the Company or any of its subsidiaries. The Company was in compliance with all covenants at December 31, 2013.

STOCKBASED_COMPENSATION

STOCK-BASED COMPENSATION	9 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
STOCK-BASED COMPENSATION	'
	STOCK-BASED COMPENSATION
	The Company recognizes the grant-date fair value of stock-based compensation as compensation expense using the straight-line attribution approach over the service period for which the stock-based compensation is expected to vest. The following table summarizes the amount of stock-based compensation included in the condensed consolidated statements of operations:
			Three Months Ended							Nine Months Ended
			December 31,							December 31,
	(in thousands)		2013				2012			2013			2012
	Cost of revenues		$	686			$	507		$	1,859		$	1,629
	Research, development and engineering		1,688				1,336			4,708			3,715
	Selling, general and administrative		3,669				2,848			10,429			8,829
	Stock-based compensation included in operating expenses		5,357				4,184			15,137			12,544
	Total stock-based compensation		6,043				4,691			16,996			14,173
	Income tax benefit		(1,788		)		(1,342		)	(5,063		)	(4,256		)
	Total stock-based compensation, net of tax		$	4,255			$	3,349		$	11,933		$	9,917
	Stock Options
	The following is a summary of the Company’s stock option activity during the nine months ended December 31, 2013:
		Options Outstanding
		Number of			Weighted				Weighted	Aggregate
		Shares			Average				Average	Intrinsic
					Exercise				Remaining	Value
					Price				Contractual Life
		(in thousands)							(in years)	(in thousands)
	Outstanding at March 31, 2013	2,415			$	27.96
	Options granted	297			$	44.75
	Options exercised	(702	)		$	24.27
	Options forfeited or expired	(13	)		$	33.28
	Outstanding at December 31, 2013	1,997			$	31.71			4.2	$	29,100
	Vested and expected to vest at December 31, 2013	1,952			$	31.52			4.1	$	28,834
	Exercisable at December 31, 2013	1,364			$	28.4			3.4	$	24,373
	The total intrinsic value of options exercised during the nine months ended December 31, 2013 and 2012 was $15.1 million and $5.1 million, respectively.  Intrinsic value is defined as the amount by which the fair value of the underlying stock exceeds the exercise price at the time of option exercise. The total cash received as a result of stock option exercises during the nine months ended December 31, 2013 was $17.0 million, net of taxes.
	As of December 31, 2013, total unrecognized compensation cost related to unvested stock options was $5.8 million, which is expected to be recognized over a weighted average period of 2.0 years.
	Restricted Stock
	Restricted stock consists of awards of restricted stock and restricted stock units ("RSUs"). The following is a summary of the Company’s restricted stock activity during the nine months ended December 31, 2013:
		Number of			Weighted Average Grant Date Fair Value
		Shares
		(in thousands)
	Non-vested at March 31, 2013	1,025			$	33.34
	Restricted stock granted	570			$	46.09
	Restricted stock vested	(373	)		$	33.09
	Restricted stock forfeited	(36	)		$	37.07
	Non-vested at December 31, 2013	1,186			$	39.43
	The weighted average grant-date fair value of awards of restricted stock is based on the quoted market price of the Company's common stock on the date of grant. The weighted average grant-date fair value of restricted stock granted during the nine months ended December 31, 2013 and 2012 was $46.09 and $32.13, respectively. The total fair value of restricted stock that vested during the nine months ended December 31, 2013 and 2012 was $12.3 million and $6.5 million, respectively.
	As of December 31, 2013, total unrecognized compensation cost related to unvested restricted stock was $31.8 million, which is expected to be recognized over a weighted average period of 2.2 years.
	Valuation Assumptions
	The Company estimates the fair value of stock options and Employee Stock Purchase Plan (“ESPP”) shares using a Black-Scholes option valuation model.  At the date of grant, the Company estimated the fair value of each stock option grant and purchase right granted under the ESPP using the following weighted average assumptions:
			Three Months Ended							Nine Months Ended
			December 31,							December 31,
	Employee Stock Options		2013				2012			2013			2012
	Expected volatility		30.1		%		41.2		%	32.2		%	41.8		%
	Risk-free interest rate		1.1		%		0.6		%	0.9		%	0.6		%
	Expected dividend yield		0.9		%		1.2		%	0.9		%	1.2		%
	Expected life (in years)		4.2				4.3			4.2			4.3
	Weighted-average grant date fair value		$	10.15			$	10.1		$	11.15		$	10.31
	ESPP (1)
	Expected volatility									24.9		%	38.4		%
	Risk-free interest rate									0.1		%	0.1		%
	Expected dividend yield									0.9		%	1.1		%
	Expected life (in years)									0.5			0.5
	Weighted-average grant date fair value									$	9.58		$	8.95
	(1) No purchase rights were granted under the ESPP during the three months ended December 31, 2013 or 2012.

COMMON_STOCK_REPURCHASES

COMMON STOCK REPURCHASES	9 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
COMMON STOCK REPURCHASES	'
	COMMON STOCK REPURCHASES
	From time to time, the Company's Board of Directors ("Board") has authorized programs under which the Company may repurchase shares of its common stock, depending on market conditions, in the open market or through privately negotiated transactions. Repurchased shares are held as treasury stock until they are retired or re-issued. Repurchases by the Company pursuant to Board authorized programs during the nine months ended December 31, 2013 and 2012 are discussed below. As of December 31, 2013, there remained 600,000 shares authorized for repurchase under the program approved by the Board on November 11, 2013 and there were no remaining shares authorized under previously approved programs.
	Open Market Repurchases
	In the nine months ended December 31, 2013 and 2012, the Company repurchased 1,281,907 shares and 743,818 shares, respectively, of its common stock in the open market for a total cost of $56.8 million and $23.6 million, respectively, and at an average price per share of $44.27 and $31.76, respectively.
	In addition, the Company withheld shares valued at $6.0 million and $2.8 million in the nine months ended December 31, 2013, and 2012, respectively, in satisfaction of employee tax withholding obligations upon the vesting of restricted stock granted under the Company's stock plans. The amounts withheld were equivalent to the employees' minimum statutory tax withholding requirements and are reflected as a financing activity within the Company's condensed consolidated statements of cash flows. These share withholdings have the effect of share repurchases by the Company as they reduce the number of shares that would have otherwise been issued in connection with the vesting of shares subject to the restricted stock grants and did not represent an expense to the Company.

ACCUMULATED_OTHER_COMPREHENSIV

ACCUMULATED OTHER COMPREHENSIVE INCOME	9 Months Ended
	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]	'
ACCUMULATED OTHER COMPREHENSIVE INCOME	'
	ACCUMULATED OTHER COMPREHENSIVE INCOME
	The components of accumulated other comprehensive income ("AOCI"), net of immaterial tax effects, are as follows:
	(in thousands)	December 31, 2013			31-Mar-13
	Accumulated unrealized gain (loss) on cash flow hedges (1)	$	(2,335	)	$	1,349
	Accumulated foreign currency translation adjustments	4,017			4,131
	Accumulated unrealized gain on investments	91			87
	Accumulated other comprehensive income	$	1,773		$	5,567
	(1)Refer to Note 12, Foreign Currency Derivatives, which discloses the nature of the Company's derivative assets and liabilities as of December 31, 2013 and March 31, 2013.

FOREIGN_CURRENCY_DERIVATIVES

FOREIGN CURRENCY DERIVATIVES	9 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
FOREIGN CURRENCY DERIVATIVES	'
	FOREIGN CURRENCY DERIVATIVES
	The Company's foreign currency derivatives consist primarily of foreign currency forward exchange contracts, option contracts and cross-currency swaps.  The derivatives expose the Company to credit risk to the extent the counterparties may be unable to meet the terms of the derivative instrument.  The Company's maximum exposure to loss due to credit risk that it would incur if parties to derivative contracts failed completely to perform according to the terms of the contracts was equal to the carrying value of the Company's derivative assets as of December 31, 2013.  The Company seeks to mitigate such risk by limiting its counterparties to large financial institutions.  In addition, the Company monitors the potential risk of loss with any one counterparty resulting from this type of credit risk on an ongoing basis.
	The Company enters into master netting arrangements with counterparties when possible to mitigate credit risk in derivative transactions. A master netting arrangement may allow each counterparty to net settle amounts owed between Plantronics and the counterparty as a result of multiple, separate derivative transactions. As of December 31, 2013, the Company has International Swaps and Derivatives Association (ISDA) agreements with three applicable banks and financial institutions which contain netting provisions. Plantronics has elected to present the fair value of derivative assets and liabilities within the Company's consolidated balance sheet on a gross basis even when derivative transactions are subject to master netting arrangements and may otherwise qualify for net presentation. For each counterparty, if netted, the Company would offset the asset and liability balances of all derivatives at the end of the reporting period. Derivatives not subject to master netting agreements are not eligible for net presentation. As of December 31, 2013 and March 31, 2013, no cash collateral had been received or pledged related to these derivative instruments.
	Refer to Note 4, Fair Value Measurements, for disclosure of the Company's fair value hierarchy for its derivative instruments and Note 11, Accumulated Other Comprehensive Income, for further discussion.
	Non-Designated Hedges
	As of December 31, 2013, the Company had foreign currency forward contracts denominated in Euros ("EUR"), British Pound Sterling ("GBP"), and Australian Dollars ("AUD").  The Company does not elect to obtain hedge accounting for these forward contracts. These forward contracts hedge against a portion of the Company’s foreign currency-denominated cash balances, receivables and payables. The following table summarizes the notional value of the Company’s outstanding foreign exchange currency contracts and approximate U.S. Dollar ("USD") equivalent at December 31, 2013:
	(in thousands)	Local Currency				USD Equivalent				Position		Maturity
	EUR	€	24,000			$	33,045			Sell EUR		1 month
	GBP	£	1,300			$	2,144			Sell GBP		1 month
	AUD	A$	3,350			$	2,971			Sell AUD		1 month
	Effect of Non-Designated Derivative Contracts on the Condensed Consolidated Statements of Operations
	The effect of non-designated derivative contracts on results of operations recognized in interest and other income, net in the condensed consolidated statements of operations was as follows:
			Three Months Ended								Nine Months Ended
			December 31,								December 31,
	(in thousands)		2013				2012				2013			2012
	Gain (loss) on foreign exchange contracts		$	(372	)		$	(618	)		$	(1,564	)	$	202
	Cash Flow Hedges
	On a monthly basis, the Company enters into option contracts with a one-year term.  The Company hedges a portion of the forecasted EUR and GBP denominated revenues with costless collars. The Company does not purchase options for trading purposes.  As of December 31, 2013, the Company had foreign currency option contracts of approximately €53.4 million and £22.2 million.  As of March 31, 2013, the Company had foreign currency option contracts of approximately €50.2 million and £19.9 million. A loss of $2.4 million, net of tax, in accumulated other comprehensive income ("AOCI") as of December 31, 2013 is expected to be reclassified to net revenues during the next 12 months due to the recognition of the hedged forecasted sales.
	The Company hedges a portion of the forecasted Mexican Peso (“MXN”) denominated expenditures with a cross-currency swap.  There were no material gains or losses in AOCI as of December 31, 2013 expected to be reclassified into cost of revenues during the next 12 months due to the recognition of the hedged forecasted expenditures. As of December 31, 2013 and March 31, 2013, the Company had foreign currency swap contracts of approximately MXN278.4 million and MXN325.4 million, respectively.
	The following table summarizes the notional value of the Company’s outstanding MXN cross-currency swaps and approximate USD Equivalent at December 31, 2013:
	(in thousands)	Local Currency			USD Equivalent				Position		Maturity
	MXN	278,350			$	21,060			Buy MXN		Monthly over	12 months
	Effect of Designated Derivative Contracts on AOCI and Condensed Consolidated Statements of Operations
	The following table presents the pre-tax effects of derivative instruments designated as cash flow hedges on the accumulated other comprehensive income and condensed consolidated statements of income for the three and nine months ended December 31, 2013 and 2012:
			Three Months Ended December 31,								Nine Months Ended December 31,
	(in thousands)		2013				2012				2013			2012
	Gain (loss) included in AOCI as of beginning of period		$	(2,373	)		$	717			$	1,371		$	1,937
	Amount of gain (loss) recognized in OCI (effective portion)		(222		)		(961		)		(3,869		)	587
	Amount of gain (loss) reclassified from OCI into net revenues (effective portion)		(116		)		266				(262		)	3,329
	Amount of gain (loss) reclassified from OCI into cost of revenues (effective portion)		(64		)		404				179			109
	Total amount of gain (loss) reclassified from AOCI to income (loss) (effective portion)		(180		)		670				(83		)	3,438
	Loss included in AOCI as of end of period		$	(2,415	)		$	(914	)		$	(2,415	)	$	(914	)

INCOME_TAXES

INCOME TAXES	9 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
INCOME TAXES	'
	INCOME TAXES
	The Company and its subsidiaries are subject to taxation in the U.S. and in various foreign and state jurisdictions. The effective tax rate for the three and nine months ended December 31, 2013 was 9.6% and 19.3%, respectively, compared to 18.9% and 23.6%, respectively, for the same periods in the prior year. The effective tax rates differ from the statutory rate due primarily to the generation of a foreign tax credit carryover, changes in Mexican tax law that resulted in the reversal of a valuation allowance, a first time tax deduction for qualifying domestic production activities that were not in the same period a year ago, and a larger proportion of income in foreign jurisdictions taxed at lower rates.
	Included in long-term income taxes payable in the condensed consolidated balance sheets as of December 31, 2013 and March 31, 2013 were unrecognized tax benefits of $12.7 million and $11.1 million, respectively, which would favorably impact the effective tax rate in future periods if recognized.
	The Company’s continuing practice is to recognize interest and/or penalties related to income tax matters in income tax expense in the condensed consolidated statements of operations.  The accrued interest related to unrecognized tax benefits is $1.8 million as of December 31, 2013 as compared to $2.0 million as of March 31, 2013.  No penalties have been accrued.
	The Company is under examination by the Internal Revenue Service for its 2010 tax year and the California Franchise Tax Board for its 2007 and 2008 tax years.  Foreign income tax matters for material tax jurisdictions have been concluded for tax years prior to fiscal 2007, except for the United Kingdom, which has been concluded for tax years prior to fiscal year 2012.
	The Company believes that an adequate provision has been made for any adjustments that may result from tax examinations; however, the outcome of such examinations cannot be predicted with certainty. If any issues addressed in the tax examinations are resolved in a manner inconsistent with the Company's expectations, the Company could be required to adjust its provision for income tax in the period such resolution occurs.

COMPUTATION_OF_EARNINGS_PER_CO

COMPUTATION OF EARNINGS PER COMMON SHARE	9 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
COMPUTATION OF EARNINGS PER COMMON SHARE	'
	COMPUTATION OF EARNINGS PER COMMON SHARE
	The Company has a share-based compensation plan under which employees, non-employee directors, and consultants may be granted share-based awards, including shares of restricted stock on which non-forfeitable dividends are paid on unvested shares. As such, shares of restricted stock are considered participating securities under the two-class method of calculating earnings per share as described in the Earnings per Share Topic of the FASB ASC. The two-class method of calculating earnings per share did not have a material impact on the Company's earnings per share calculation for the three and nine month periods ending December 31, 2013 or 2012.
	The following table sets forth the computation of basic and diluted earnings per common share for the three and nine months ended December 31, 2013 and 2012:
		Three Months Ended				Nine Months Ended
		December 31,				December 31,
	(in thousands, except per share data)	2013		2012		2013		2012
	Numerator:
	Net income	$	34,383	$	28,206	$	84,474	$	77,693
	Denominator:
	Weighted average common shares-basic	42,441		41,745		42,647		41,629
	Dilutive effect of employee equity incentive plans	787		873		907		950
	Weighted average common shares-diluted	43,228		42,618		43,554		42,579
	Basic earnings per common share	$	0.81	$	0.68	$	1.98	$	1.87
	Diluted earnings per common share	$	0.8	$	0.66	$	1.94	$	1.82
	Potentially dilutive securities excluded from diluted earnings per common share because their effect is anti-dilutive	268		1,210		173		1,125

REVENUE_AND_MAJOR_CUSTOMERS

REVENUE AND MAJOR CUSTOMERS	9 Months Ended
	Dec. 31, 2013
REVENUE AND MAJOR CUSTOMERS [Abstract]	'
REVENUE AND MAJOR CUSTOMERS	'
	REVENUE AND MAJOR CUSTOMERS
	The Company designs, manufactures, markets, and sells headsets for business and consumer applications, and other specialty products for the hearing impaired.  With respect to headsets, it makes products for use in offices and contact centers, with mobile and cordless phones, and with computers and gaming consoles.  Major product categories include “Office and Contact Center”, which includes corded and cordless communication headsets, audio processors, and telephone systems; “Mobile”, which includes Bluetooth and corded products for mobile phone applications; “Gaming and Computer Audio”, which includes personal computer ("PC") and gaming headsets; and “Clarity”, which includes specialty products marketed for hearing impaired individuals.
	The following table presents net revenues by product group for the three and nine months ended December 31, 2013 and 2012:
		Three Months Ended				Nine Months Ended
		December 31,				December 31,
	(in thousands)	2013		2012		2013		2012
	Net revenues from unaffiliated customers:
	Office and Contact Center	$	146,636	$	139,449	$	437,764	$	406,601
	Mobile	52,804		44,138		137,113		113,600
	Gaming and Computer Audio	9,360		9,024		23,967		23,610
	Clarity	3,939		4,791		10,693		14,236
	Total net revenues	$	212,739	$	197,402	$	609,537	$	558,047
	For reporting purposes, revenue is attributed to each geographic region based on the location of the customer. Other than the U.S., no country accounted for 10% or more of the Company's net revenues for the three and nine months ended December 31, 2013 and 2012. The following table presents net revenues by geography:
		Three Months Ended				Nine Months Ended
		December 31,				31-Dec-13
	(in thousands)	2013		2012		2013		2012
	Net revenues from unaffiliated customers:
	U.S.	$	113,042	$	111,847	$	350,155	$	323,438
	Europe and Africa	58,997		51,095		146,476		131,622
	Asia Pacific	25,917		20,637		73,077		64,055
	Americas, excluding U.S.	14,783		13,823		39,829		38,932
	Total international net revenues	99,697		85,555		259,382		234,609
	Total net revenues	$	212,739	$	197,402	$	609,537	$	558,047
	No customer accounted for more than 10% of net revenues for the three and nine months ended December 31, 2013. One customer, Ingram Micro, accounted for 10% of net revenues for the three months ended December 31, 2012. No customer accounted for 10% or more of net revenues for the nine months ended December 31, 2012.
	Ingram Micro also accounted for 10.5% and 10.3% of net accounts receivable at December 31, 2013 and March 31, 2013, respectively.

SUBSEQUENT_EVENTS

SUBSEQUENT EVENTS	9 Months Ended
	Dec. 31, 2013
Subsequent Events [Abstract]	'
SUBSEQUENT EVENTS	'
	SUBSEQUENT EVENTS
	On January 27, 2014, the Company's Board of Directors declared a cash dividend of $0.10 per share of the Company's common stock, payable on March 10, 2014 to stockholders of record at the close of business on February 20, 2014.

CASH_CASH_EQUIVALENTS_AND_INVE1

CASH, CASH EQUIVALENTS, AND INVESTMENTS (Tables)	9 Months Ended
	Dec. 31, 2013
CASH, CASH EQUIVALENTS AND INVESTMENTS [Abstract]	'
Cash, Cash Equivalents, and Investments	'
	The following table represents the Company’s cash, cash equivalents, and investments as of December 31, 2013 and March 31, 2013:
	(in thousands)	December 31, 2013									March 31, 2013
		Amortized		Gross		Gross			Fair		Amortized		Gross		Gross			Fair
		Cost		Unrealized		Unrealized			Value		Cost		Unrealized		Unrealized			Value
				Gains		Losses							Gains		Losses
	Cash and cash equivalents:
	Cash	$	225,310	$	—	$	—		$	225,310	$	118,881	$	—	$	—		$	118,881
	Cash equivalents	10,223		1		—			10,224		109,895		—		—			109,895
	Total cash and cash equivalents	$	235,533	$	1	$	—		$	235,534	$	228,776	$	—	$	—		$	228,776
	Short-term investments (due in 1 year or less):
	U.S. Treasury Bills and Government Agency Securities	$	19,227	$	6	$	(1	)	$	19,232	$	66,092	$	18	$	(3	)	$	66,107
	Commercial paper	43,792		13		—			43,805		15,670		9		—			15,679
	Corporate bonds	22,353		6		(2		)	22,357		34,766		31		(2		)	34,795
	Certificates of deposit ("CDs")	1,002		1		—			1,003		—		—		—			—
	Total short-term investments	$	86,374	$	26	$	(3	)	$	86,397	$	116,528	$	58	$	(5	)	$	116,581
	Long-term investments (due in 1 to 3 years):
	U.S. Treasury Bills and Government Agency Securities	$	36,929	$	23	$	(14	)	$	36,938	$	55,317	$	42	$	(1	)	$	55,358
	Corporate bonds	69,772		116		(26		)	69,862		23,878		23		(3		)	23,898
	CDs	—		—		—			—		1,002		3		—			1,005
	Total long-term investments	$	106,701	$	139	$	(40	)	$	106,800	$	80,197	$	68	$	(4	)	$	80,261
	Total cash, cash equivalents and investments	$	428,608	$	166	$	(43	)	$	428,731	$	425,501	$	126	$	(9	)	$	425,618

FAIR_VALUE_MEASUREMENTS_Tables

FAIR VALUE MEASUREMENTS (Tables)	9 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Hierarchy of Financial Assets and Liabilities	'
	The following tables present the Company’s cash and financial assets and liabilities, measured at fair value, by level within the fair value hierarchy as of December 31, 2013 and March 31, 2013.
	Fair Values as of December 31, 2013:
	(in thousands)	Level 1		Level 2		Total
	Cash and cash equivalents:
	Cash	$	225,310	$	—	$	225,310
	Mutual funds	1,227		—		1,227
	Commercial paper	—		8,997		8,997
	Short-term investments:
	Government Agency Securities	—		19,232		19,232
	Commercial paper	—		43,805		43,805
	Corporate bonds	—		22,357		22,357
	CDs	—		1,003		1,003
	Long-term investments:
	Government Agency Securities	—		36,938		36,938
	Corporate bonds	—		69,862		69,862
	Other current assets:
	Derivative assets	—		967		967
	Total assets measured at fair value	$	226,537	$	203,161	$	429,698
	Accrued liabilities:
	Derivative liabilities	$	—	$	3,841	$	3,841
	Fair Values as of March 31, 2013:
	(in thousands)	Level 1		Level 2		Total
	Cash and cash equivalents:
	Cash	$	118,881	$	—	$	118,881
	U.S. Treasury Bills	104,995		—		104,995
	Commercial paper	—		4,900		4,900
	Short-term investments:
	U.S. Treasury Bills and Government Agency Securities	7,243		58,864		66,107
	Commercial paper	—		15,679		15,679
	Corporate bonds	—		34,795		34,795
	Long-term investments:
	U.S. Treasury Bills and Government Agency Securities	22,904		32,454		55,358
	Corporate bonds	—		23,898		23,898
	CDs	—		1,005		1,005
	Other current assets:
	Derivative assets	—		1,665		1,665
	Total assets measured at fair value	$	254,023	$	173,260	$	427,283
	Accrued liabilities:
	Derivative liabilities	$	3	$	291	$	294

DETAILS_OF_CERTAIN_BALANCE_SHE1

DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS (Tables)	9 Months Ended
	Dec. 31, 2013
Balance Sheet Related Disclosures [Abstract]	'
Accounts receivable, net	'
	Accounts receivable, net:
		December 31,			March 31,
	(in thousands)	2013			2013
	Accounts receivable	$	159,317		$	151,250
	Provisions for returns	(8,912		)	(8,957		)
	Provisions for promotions, rebates, and other	(16,814		)	(13,675		)
	Provisions for doubtful accounts and sales allowances	(212		)	(409		)
	Accounts receivable, net	$	133,379		$	128,209
Inventory, net	'
	Inventory, net:
		December 31,			March 31,
	(in thousands)	2013			2013
	Raw materials	$	34,258		$	28,743
	Work in process	432			82
	Finished goods	31,879			38,610
	Inventory, net	$	66,569		$	67,435
Accrued liabilities	'
	Accrued Liabilities:
		December 31,			March 31,
	(in thousands)	2013			2013
	Employee compensation and benefits	$	31,779		$	29,796
	Warranty obligation	7,963			13,410
	Accrued advertising, sales, and marketing	4,847			3,735
	Accrued other	22,026			19,478
	Accrued liabilities	$	66,615		$	66,419
Changes in the warranty obligation	'
	Changes in the warranty obligation during the nine months ended December 31, 2013 were as follows:
		Nine Months Ended			Nine Months Ended
	(in thousands)	December 31, 2013			December 31, 2012
	Warranty obligation at beginning of period	$	13,410		$	13,346
	Correction of immaterial prior period error (2)	(5,042		)	—
	Warranty provision relating to products shipped	6,851			11,856
	Deductions for warranty claims processed	(7,256		)	(12,147		)
	Warranty obligation at end of period	$	7,963		$	13,055
	(2)Refer to Note 1, Basis of Presentation, for details about the prior period error corrected in the quarter ended December 31, 2013.

STOCKBASED_COMPENSATION_Tables

STOCK-BASED COMPENSATION (Tables)	9 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock-Based Compensation Expense Included in Statements of Operations	'
	The following table summarizes the amount of stock-based compensation included in the condensed consolidated statements of operations:
			Three Months Ended							Nine Months Ended
			December 31,							December 31,
	(in thousands)		2013				2012			2013			2012
	Cost of revenues		$	686			$	507		$	1,859		$	1,629
	Research, development and engineering		1,688				1,336			4,708			3,715
	Selling, general and administrative		3,669				2,848			10,429			8,829
	Stock-based compensation included in operating expenses		5,357				4,184			15,137			12,544
	Total stock-based compensation		6,043				4,691			16,996			14,173
	Income tax benefit		(1,788		)		(1,342		)	(5,063		)	(4,256		)
	Total stock-based compensation, net of tax		$	4,255			$	3,349		$	11,933		$	9,917
Summary of Stock Option Activity	'
	The following is a summary of the Company’s stock option activity during the nine months ended December 31, 2013:
		Options Outstanding
		Number of			Weighted				Weighted	Aggregate
		Shares			Average				Average	Intrinsic
					Exercise				Remaining	Value
					Price				Contractual Life
		(in thousands)							(in years)	(in thousands)
	Outstanding at March 31, 2013	2,415			$	27.96
	Options granted	297			$	44.75
	Options exercised	(702	)		$	24.27
	Options forfeited or expired	(13	)		$	33.28
	Outstanding at December 31, 2013	1,997			$	31.71			4.2	$	29,100
	Vested and expected to vest at December 31, 2013	1,952			$	31.52			4.1	$	28,834
	Exercisable at December 31, 2013	1,364			$	28.4			3.4	$	24,373
Summary of Restricted Stock Activity	'
	Restricted stock consists of awards of restricted stock and restricted stock units ("RSUs"). The following is a summary of the Company’s restricted stock activity during the nine months ended December 31, 2013:
		Number of			Weighted Average Grant Date Fair Value
		Shares
		(in thousands)
	Non-vested at March 31, 2013	1,025			$	33.34
	Restricted stock granted	570			$	46.09
	Restricted stock vested	(373	)		$	33.09
	Restricted stock forfeited	(36	)		$	37.07
	Non-vested at December 31, 2013	1,186			$	39.43
Valuation Assumptions	'
	At the date of grant, the Company estimated the fair value of each stock option grant and purchase right granted under the ESPP using the following weighted average assumptions:
			Three Months Ended							Nine Months Ended
			December 31,							December 31,
	Employee Stock Options		2013				2012			2013			2012
	Expected volatility		30.1		%		41.2		%	32.2		%	41.8		%
	Risk-free interest rate		1.1		%		0.6		%	0.9		%	0.6		%
	Expected dividend yield		0.9		%		1.2		%	0.9		%	1.2		%
	Expected life (in years)		4.2				4.3			4.2			4.3
	Weighted-average grant date fair value		$	10.15			$	10.1		$	11.15		$	10.31
	ESPP (1)
	Expected volatility									24.9		%	38.4		%
	Risk-free interest rate									0.1		%	0.1		%
	Expected dividend yield									0.9		%	1.1		%
	Expected life (in years)									0.5			0.5
	Weighted-average grant date fair value									$	9.58		$	8.95
	(1) No purchase rights were granted under the ESPP during the three months ended December 31, 2013 or 2012.

ACCUMULATED_OTHER_COMPREHENSIV1

ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables)	9 Months Ended
	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]	'
Schedule of Accumulated Other Comprehensive Income	'
	The components of accumulated other comprehensive income ("AOCI"), net of immaterial tax effects, are as follows:
	(in thousands)	December 31, 2013			31-Mar-13
	Accumulated unrealized gain (loss) on cash flow hedges (1)	$	(2,335	)	$	1,349
	Accumulated foreign currency translation adjustments	4,017			4,131
	Accumulated unrealized gain on investments	91			87
	Accumulated other comprehensive income	$	1,773		$	5,567
	(1)Refer to Note 12, Foreign Currency Derivatives, which discloses the nature of the Company's derivative assets and liabilities as of December 31, 2013 and March 31, 2013.

FOREIGN_CURRENCY_DERIVATIVES_T

FOREIGN CURRENCY DERIVATIVES (Tables)	9 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Notional Value of Outstanding Foreign Exchange Currency Contracts	'
	The following table summarizes the notional value of the Company’s outstanding foreign exchange currency contracts and approximate U.S. Dollar ("USD") equivalent at December 31, 2013:
	(in thousands)	Local Currency				USD Equivalent				Position		Maturity
	EUR	€	24,000			$	33,045			Sell EUR		1 month
	GBP	£	1,300			$	2,144			Sell GBP		1 month
	AUD	A$	3,350			$	2,971			Sell AUD		1 month
Effect of Non-Designated Derivative Contracts Recognized in Interest and Other Income, Net	'
	The effect of non-designated derivative contracts on results of operations recognized in interest and other income, net in the condensed consolidated statements of operations was as follows:
			Three Months Ended								Nine Months Ended
			December 31,								December 31,
	(in thousands)		2013				2012				2013			2012
	Gain (loss) on foreign exchange contracts		$	(372	)		$	(618	)		$	(1,564	)	$	202
Notional Value of Outstanding Cross-Currency Swaps	'
	The following table summarizes the notional value of the Company’s outstanding MXN cross-currency swaps and approximate USD Equivalent at December 31, 2013:
	(in thousands)	Local Currency			USD Equivalent				Position		Maturity
	MXN	278,350			$	21,060			Buy MXN		Monthly over	12 months
Reclassification out of Accumulated Other Comprehensive Income	'
	The following table presents the pre-tax effects of derivative instruments designated as cash flow hedges on the accumulated other comprehensive income and condensed consolidated statements of income for the three and nine months ended December 31, 2013 and 2012:
			Three Months Ended December 31,								Nine Months Ended December 31,
	(in thousands)		2013				2012				2013			2012
	Gain (loss) included in AOCI as of beginning of period		$	(2,373	)		$	717			$	1,371		$	1,937
	Amount of gain (loss) recognized in OCI (effective portion)		(222		)		(961		)		(3,869		)	587
	Amount of gain (loss) reclassified from OCI into net revenues (effective portion)		(116		)		266				(262		)	3,329
	Amount of gain (loss) reclassified from OCI into cost of revenues (effective portion)		(64		)		404				179			109
	Total amount of gain (loss) reclassified from AOCI to income (loss) (effective portion)		(180		)		670				(83		)	3,438
	Loss included in AOCI as of end of period		$	(2,415	)		$	(914	)		$	(2,415	)	$	(914	)

COMPUTATION_OF_EARNINGS_PER_CO1

COMPUTATION OF EARNINGS PER COMMON SHARE (Tables)	9 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Computation of Basic and Diluted Earnings per Common Share	'
	The following table sets forth the computation of basic and diluted earnings per common share for the three and nine months ended December 31, 2013 and 2012:
		Three Months Ended				Nine Months Ended
		December 31,				December 31,
	(in thousands, except per share data)	2013		2012		2013		2012
	Numerator:
	Net income	$	34,383	$	28,206	$	84,474	$	77,693
	Denominator:
	Weighted average common shares-basic	42,441		41,745		42,647		41,629
	Dilutive effect of employee equity incentive plans	787		873		907		950
	Weighted average common shares-diluted	43,228		42,618		43,554		42,579
	Basic earnings per common share	$	0.81	$	0.68	$	1.98	$	1.87
	Diluted earnings per common share	$	0.8	$	0.66	$	1.94	$	1.82
	Potentially dilutive securities excluded from diluted earnings per common share because their effect is anti-dilutive	268		1,210		173		1,125

REVENUE_AND_MAJOR_CUSTOMERS_Ta

REVENUE AND MAJOR CUSTOMERS (Tables)	9 Months Ended
	Dec. 31, 2013
REVENUE AND MAJOR CUSTOMERS [Abstract]	'
Net Revenues by Product Group	'
	The following table presents net revenues by product group for the three and nine months ended December 31, 2013 and 2012:
		Three Months Ended				Nine Months Ended
		December 31,				December 31,
	(in thousands)	2013		2012		2013		2012
	Net revenues from unaffiliated customers:
	Office and Contact Center	$	146,636	$	139,449	$	437,764	$	406,601
	Mobile	52,804		44,138		137,113		113,600
	Gaming and Computer Audio	9,360		9,024		23,967		23,610
	Clarity	3,939		4,791		10,693		14,236
	Total net revenues	$	212,739	$	197,402	$	609,537	$	558,047
Net Revenues by Geography	'
	The following table presents net revenues by geography:
		Three Months Ended				Nine Months Ended
		December 31,				31-Dec-13
	(in thousands)	2013		2012		2013		2012
	Net revenues from unaffiliated customers:
	U.S.	$	113,042	$	111,847	$	350,155	$	323,438
	Europe and Africa	58,997		51,095		146,476		131,622
	Asia Pacific	25,917		20,637		73,077		64,055
	Americas, excluding U.S.	14,783		13,823		39,829		38,932
	Total international net revenues	99,697		85,555		259,382		234,609
	Total net revenues	$	212,739	$	197,402	$	609,537	$	558,047

BASIS_OF_PRESENTATION_Details

BASIS OF PRESENTATION (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2013
Number of weeks in fiscal year	'	'	'P52W	'	'P52W
Quarter to date number of weeks in fiscal quarter	'P13W	'P13W	'	'	'
Year to date number of weeks in fiscal quarter	'	'	'P39W	'P39W	'
Cost of revenues	$102,412	$95,238	$293,964	$260,959	'
Net income	34,383	28,206	84,474	77,693	'
Error Related to Estimated Warranty Obligation and Return Material Authorization [Member]	'	'	'	'	'
Net income	2,100	'	'	'	'
Cost of revenues [Member] | Error Related to Estimated Warranty Obligation and Return Material Authorization [Member]	'	'	'	'	'
Cost of revenues	$2,400	'	'	'	'

CASH_CASH_EQUIVALENTS_AND_INVE2

CASH, CASH EQUIVALENTS, AND INVESTMENTS (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012
Schedule of Cash, Cash Equivalents and Investments [Line Items]	'	'	'	'
Cash and Cash Equivalents, Fair Value	$235,534	$228,776	$196,656	$209,335
Cash, Cash Equivalents Before Unrealized Gains And Losses, and Amortized Cost Basis of Available-For-Sale Securities	428,608	425,501	'	'
Cash Equivalents and Available-For-Sale Securities, Gross Unrealized Gains	166	126	'	'
Cash Equivalents and Available-For-Sale Securities, Gross Unrealized Losses	-43	-9	'	'
Cash and Fair Value of Cash Equivalents and Available-For-Sale Securities	428,731	425,618	'	'
U.S. Treasury Bills and Government Agency Securities [Member]	'	'	'	'
Schedule of Cash, Cash Equivalents and Investments [Line Items]	'	'	'	'
Available-for-sale securities, gross unrealized gains	23	42	'	'
Available-for-sale securities, gross unrealized losses	-14	-1	'	'
Available-for-sale securities, Long-term investments (due in 1 to 3 years), Amortized Cost	36,929	55,317	'	'
Available-for-sale securities, Long term investments (due in 1 to 3 years), Fair Value	36,938	55,358	'	'
Corporate Bonds [Member]	'	'	'	'
Schedule of Cash, Cash Equivalents and Investments [Line Items]	'	'	'	'
Available-for-sale securities, gross unrealized gains	116	23	'	'
Available-for-sale securities, gross unrealized losses	-26	-3	'	'
Available-for-sale securities, Long-term investments (due in 1 to 3 years), Amortized Cost	69,772	23,878	'	'
Available-for-sale securities, Long term investments (due in 1 to 3 years), Fair Value	69,862	23,898	'	'
Certificates of Deposit [Member]	'	'	'	'
Schedule of Cash, Cash Equivalents and Investments [Line Items]	'	'	'	'
Available-for-sale securities, gross unrealized gains	0	3	'	'
Available-for-sale securities, gross unrealized losses	0	0	'	'
Available-for-sale securities, Long-term investments (due in 1 to 3 years), Amortized Cost	0	1,002	'	'
Available-for-sale securities, Long term investments (due in 1 to 3 years), Fair Value	0	1,005	'	'
U.S. Treasury Bills and Government Agency Securities [Member]	'	'	'	'
Schedule of Cash, Cash Equivalents and Investments [Line Items]	'	'	'	'
Available-for-sale securities, Short-term investments (due in 1 year or less), Amortized Cost	19,227	66,092	'	'
Available-for-sale securities, gross unrealized gains	6	18	'	'
Available-for-sale securities, gross unrealized losses	-1	-3	'	'
Available-for-sale securities, Short-term investments (due in 1 year or less), Fair Value	19,232	66,107	'	'
Commercial Paper [Member]	'	'	'	'
Schedule of Cash, Cash Equivalents and Investments [Line Items]	'	'	'	'
Available-for-sale securities, Short-term investments (due in 1 year or less), Amortized Cost	43,792	15,670	'	'
Available-for-sale securities, gross unrealized gains	13	9	'	'
Available-for-sale securities, gross unrealized losses	0	0	'	'
Available-for-sale securities, Short-term investments (due in 1 year or less), Fair Value	43,805	15,679	'	'
Corporate Bonds [Member]	'	'	'	'
Schedule of Cash, Cash Equivalents and Investments [Line Items]	'	'	'	'
Available-for-sale securities, Short-term investments (due in 1 year or less), Amortized Cost	22,353	34,766	'	'
Available-for-sale securities, gross unrealized gains	6	31	'	'
Available-for-sale securities, gross unrealized losses	-2	-2	'	'
Available-for-sale securities, Short-term investments (due in 1 year or less), Fair Value	22,357	34,795	'	'
Certificates of Deposit [Member]	'	'	'	'
Schedule of Cash, Cash Equivalents and Investments [Line Items]	'	'	'	'
Available-for-sale securities, Short-term investments (due in 1 year or less), Amortized Cost	1,002	0	'	'
Available-for-sale securities, gross unrealized gains	1	0	'	'
Available-for-sale securities, gross unrealized losses	0	0	'	'
Available-for-sale securities, Short-term investments (due in 1 year or less), Fair Value	1,003	0	'	'
Cash [Member]	'	'	'	'
Schedule of Cash, Cash Equivalents and Investments [Line Items]	'	'	'	'
Cash	225,310	118,881	'	'
Cash Equivalents [Member]	'	'	'	'
Schedule of Cash, Cash Equivalents and Investments [Line Items]	'	'	'	'
Cash Equivalents Before Unrealized Gains And Losses	10,223	109,895	'	'
Cash Equivalents, Gross Unrealized Gains	1	0	'	'
Cash Equivalents, Gross Unrealized Losses	0	0	'	'
Cash equivalents, fair value	10,224	109,895	'	'
Cash and cash equivalents [Member]	'	'	'	'
Schedule of Cash, Cash Equivalents and Investments [Line Items]	'	'	'	'
Cash and Cash Equivalents Before Unrealized Gains And Losses	235,533	228,776	'	'
Cash Equivalents, Gross Unrealized Gains	1	0	'	'
Cash Equivalents, Gross Unrealized Losses	0	0	'	'
Cash and Cash Equivalents, Fair Value	235,534	228,776	'	'
Short-term Investments [Member]	'	'	'	'
Schedule of Cash, Cash Equivalents and Investments [Line Items]	'	'	'	'
Available-for-sale securities, Short-term investments (due in 1 year or less), Amortized Cost	86,374	116,528	'	'
Available-for-sale securities, gross unrealized gains	26	58	'	'
Available-for-sale securities, gross unrealized losses	-3	-5	'	'
Available-for-sale securities, Short-term investments (due in 1 year or less), Fair Value	86,397	116,581	'	'
Long-term investments [Member]	'	'	'	'
Schedule of Cash, Cash Equivalents and Investments [Line Items]	'	'	'	'
Available-for-sale securities, gross unrealized gains	139	68	'	'
Available-for-sale securities, gross unrealized losses	-40	-4	'	'
Available-for-sale securities, Long-term investments (due in 1 to 3 years), Amortized Cost	106,701	80,197	'	'
Available-for-sale securities, Long term investments (due in 1 to 3 years), Fair Value	$106,800	$80,261	'	'

FAIR_VALUE_MEASUREMENTS_Detail

FAIR VALUE MEASUREMENTS (Details) (Fair Value, Measurements, Recurring [Member], USD $)	Dec. 31, 2013	Mar. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Inputs, Level 1 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Total assets measured at fair value	$226,537	$254,023
Fair Value, Inputs, Level 2 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Total assets measured at fair value	203,161	173,260
Estimate of Fair Value Measurement [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Total assets measured at fair value	429,698	427,283
Cash and Cash Equivalents [Member] | Cash [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Cash and cash equivalents, fair value	225,310	118,881
Cash and Cash Equivalents [Member] | Cash [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Cash and cash equivalents, fair value	0	0
Cash and Cash Equivalents [Member] | Cash [Member] | Estimate of Fair Value Measurement [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Cash and cash equivalents, fair value	225,310	118,881
Cash and Cash Equivalents [Member] | Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Cash and cash equivalents, fair value	1,227	'
Cash and Cash Equivalents [Member] | Mutual Funds [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Cash and cash equivalents, fair value	0	'
Cash and Cash Equivalents [Member] | Mutual Funds [Member] | Estimate of Fair Value Measurement [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Cash and cash equivalents, fair value	1,227	'
Cash and Cash Equivalents [Member] | Commercial Paper [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Cash and cash equivalents, fair value	0	0
Cash and Cash Equivalents [Member] | Commercial Paper [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Cash and cash equivalents, fair value	8,997	4,900
Cash and Cash Equivalents [Member] | Commercial Paper [Member] | Estimate of Fair Value Measurement [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Cash and cash equivalents, fair value	8,997	4,900
Cash and Cash Equivalents [Member] | U.S. Treasury Bills and Government Agency Securities [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Cash and cash equivalents, fair value	'	104,995
Cash and Cash Equivalents [Member] | U.S. Treasury Bills and Government Agency Securities [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Cash and cash equivalents, fair value	'	0
Cash and Cash Equivalents [Member] | U.S. Treasury Bills and Government Agency Securities [Member] | Estimate of Fair Value Measurement [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Cash and cash equivalents, fair value	'	104,995
Short-term Investments [Member] | U.S. Treasury Bills and Government Agency Securities [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	0	7,243
Short-term Investments [Member] | U.S. Treasury Bills and Government Agency Securities [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	19,232	58,864
Short-term Investments [Member] | U.S. Treasury Bills and Government Agency Securities [Member] | Estimate of Fair Value Measurement [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	19,232	66,107
Short-term Investments [Member] | Commercial Paper [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	0	0
Short-term Investments [Member] | Commercial Paper [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	43,805	15,679
Short-term Investments [Member] | Commercial Paper [Member] | Estimate of Fair Value Measurement [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	43,805	15,679
Short-term Investments [Member] | Corporate Bonds [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	0	0
Short-term Investments [Member] | Corporate Bonds [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	22,357	34,795
Short-term Investments [Member] | Corporate Bonds [Member] | Estimate of Fair Value Measurement [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	22,357	34,795
Short-term Investments [Member] | Certificates of Deposit [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	0	'
Short-term Investments [Member] | Certificates of Deposit [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	1,003	'
Short-term Investments [Member] | Certificates of Deposit [Member] | Estimate of Fair Value Measurement [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	1,003	'
Long Term Investments [Member] | U.S. Treasury Bills and Government Agency Securities [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	0	22,904
Long Term Investments [Member] | U.S. Treasury Bills and Government Agency Securities [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	36,938	32,454
Long Term Investments [Member] | U.S. Treasury Bills and Government Agency Securities [Member] | Estimate of Fair Value Measurement [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	36,938	55,358
Long Term Investments [Member] | Corporate Bonds [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	0	0
Long Term Investments [Member] | Corporate Bonds [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	69,862	23,898
Long Term Investments [Member] | Corporate Bonds [Member] | Estimate of Fair Value Measurement [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	69,862	23,898
Long Term Investments [Member] | Certificates of Deposit [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	'	0
Long Term Investments [Member] | Certificates of Deposit [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	'	1,005
Long Term Investments [Member] | Certificates of Deposit [Member] | Estimate of Fair Value Measurement [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Available-for-sale securities, fair value	'	1,005
Other Current Assets [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Derivative assets	0	0
Other Current Assets [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Derivative assets	967	1,665
Other Current Assets [Member] | Estimate of Fair Value Measurement [Member]	'	'
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]	'	'
Derivative assets	967	1,665
Accrued Liabilities [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]	'	'
Derivative liabilities	0	3
Accrued Liabilities [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]	'	'
Derivative liabilities	3,841	291
Accrued Liabilities [Member] | Estimate of Fair Value Measurement [Member]	'	'
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]	'	'
Derivative liabilities	$3,841	$294

DETAILS_OF_CERTAIN_BALANCE_SHE2

DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Mar. 31, 2013
Accounts receivable, net [Line Items]	'		'		'
Accounts receivable	$159,317		'		$151,250
Accounts receivable, net	133,379		'		128,209
Inventory, net [Abstract]	'		'		'
Raw materials	34,258		'		28,743
Work in process	432		'		82
Finished goods	31,879		'		38,610
Inventory, net	66,569		'		67,435
Accrued Liabilities [Abstract]	'		'		'
Employee compensation and benefits	31,779		'		29,796
Warranty obligation	7,963		'		13,410
Accrued advertising, sales, and marketing	4,847		'		3,735
Accrued other	22,026		'		19,478
Accrued liabilities	66,615		'		66,419
Changes in the Warranty Obligation [Roll Forward]	'		'		'
Warranty obligation at beginning of period	13,410		13,346		'
Correction of immaterial prior period error (2)	-5,042	[1]	0	[1]	'
Warranty provision relating to products shipped	6,851		11,856		'
Deductions for warranty claims processed	-7,256		-12,147		'
Warranty obligation at end of period	7,963		13,055		'
Provisions for returns [Member]	'		'		'
Accounts receivable, net [Line Items]	'		'		'
Accounts Receivable Reserves	-8,912		'		-8,957
Provisions for promotions, rebates, and other [Member]	'		'		'
Accounts receivable, net [Line Items]	'		'		'
Accounts Receivable Reserves	-16,814		'		-13,675
Provisions for doubtful accounts and sales allowances [Member]	'		'		'
Accounts receivable, net [Line Items]	'		'		'
Accounts Receivable Reserves	($212)		'		($409)
[1]	Refer to Note 1, Basis of Presentation, for details about the prior period error corrected in the quarter ended December 31, 2013.

GOODWILL_AND_PURCHASED_INTANGI1

GOODWILL AND PURCHASED INTANGIBLE ASSETS (Details) (USD $)	Dec. 31, 2013	Mar. 31, 2013
In Millions, unless otherwise specified
Goodwill and Intangible Assets Disclosure [Abstract]	'	'
Goodwill	$15.50	$15.50
Accumulated impairment loss	$54.60	$54.60

COMMITMENTS_AND_CONTINGENCIES_

COMMITMENTS AND CONTINGENCIES (Details) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]	'
Outstanding off balance sheet third-party manufacturing, component purchase, and other general and administrative commitments	$215.70

CREDIT_AGREEMENT_Details

CREDIT AGREEMENT (Details) (USD $)	1 Months Ended	9 Months Ended
	31-May-11	Dec. 31, 2013	Jan. 27, 2014	3-May-13	Mar. 31, 2013
Line of Credit Facility [Line Items]	'	'	'	'	'
Initiation date of credit agreement	9-May-11	'	'	'	'
Latest amendment date of Credit Agreement	'	'	'January 27, 2014	'	'
Credit facility expiration date	'	9-May-17	'	'	'
Unsecured revolving line of credit	'	'	'	$100,000,000	'
Amount of potential increase for commitment	'	'	'	100,000,000	'
Total facility size	'	'	'	200,000,000	'
Outstanding borrowings under line of credit	'	0	'	'	0
One month term	'	'1 month	'	'	'
Three month term	'	'3 months	'	'	'
Six month term	'	'6 months	'	'	'
Commitment fee percentage	'	0.20%	'	'	'
Minimum required liquid funds	'	$200,000,000	'	'	'
Line Of Credit Facility Interest Rate Spread Below The Banks Announced Prime Rate [Member]	'	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'	'
Spread for interest rate	'	1.50%	'	'	'
Line Of Credit Facility Interest Rate Spread Above A Daily One Month LIBOR Rate [Member]	'	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'	'
Spread for interest rate	'	1.10%	'	'	'
Line Of Credit Facility Interest Rate Spread Above Adjusted LIBOR Rate For A Term Of One Three Or Six Months [Member]	'	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'	'
Spread for interest rate	'	1.10%	'	'	'

STOCKBASED_COMPENSATION_Detail

STOCK-BASED COMPENSATION (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation	$4,255	$3,349	$11,933	$9,917
Cost of revenues [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation	686	507	1,859	1,629
Research, development, and engineering [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation	1,688	1,336	4,708	3,715
Selling, general, and administrative [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation	3,669	2,848	10,429	8,829
Stock-based compensation expense included in operating expenses [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation	5,357	4,184	15,137	12,544
Total stock-based compensation [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation	6,043	4,691	16,996	14,173
Income tax benefit [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation	($1,788)	($1,342)	($5,063)	($4,256)

STOCKBASED_COMPENSATION_Stock_

STOCK-BASED COMPENSATION Stock Option Activity (Details) (Stock Options [Member], USD $)	9 Months Ended
Share data in Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Stock Options [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]	'	'
Options outstanding at March 31, 2013	2,415	'
Options granted	297	'
Options exercised	-702	'
Options forfeited or expired	-13	'
Options outstanding at December 31, 2013	1,997	'
Weighted average exercise price of options outstanding, March 31, 2013	$27.96	'
Weighted average exercise price of options granted	$44.75	'
Weighted average exercise price of options exercised	$24.27	'
Weighted average exercise price of options forfeited or expired	$33.28	'
Weighted average exercise price of options outstanding, December 31, 2013	$31.71	'
Weighted average remaining contractual life of options outstanding at December 31, 2013	'4 years 73 days	'
Aggregate intrinsic value of options outstanding at December 31, 2013	$29,100,000	'
Vested and expected to vest at December 31, 2013	1,952	'
Weighted average exercise price of options vested and expected to vest at December 31, 2013	$31.52	'
Weighted average remaining contractual life of options vested and expected to vest at December 31, 2013	'4 years 37 days	'
Aggregate intrinsic value of options vested and expected to vest at December 31, 2013	28,834,000	'
Exercisable at December 31, 2013	1,364	'
Weighted average exercise price of options exercisable at December 31, 2013	$28.40	'
Weighted average remaining contractual life of options exercisable at December 31, 2013	'3 years 146 days	'
Aggregate intrinsic value of options exercisable at December 31, 2013	24,373,000	'
Total intrinsic value of options exercised	15,100,000	5,100,000
Total cash received as a result of stock option exercises, net of taxes	17,000,000	'
Total unrecognized compensation cost related to unvested stock options	$5,800,000	'
Weighted average period of recognition for unrecognized compensation cost related to unvested stock options	'2 years 0 days	'

STOCKBASED_COMPENSATION_Restri

STOCK-BASED COMPENSATION Restricted Stock Activity (Details) (Restricted Stock [Member], USD $)	9 Months Ended
In Millions, except Share data in Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Restricted Stock [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]	'	'
Non-vested Restricted Stock at March 31, 2013	1,025	'
Restricted stock granted	570	'
Restricted stock vested	-373	'
Restricted stock forfeited	-36	'
Non-vested Restricted Stock at December 31, 2013	1,186	'
Weighted Average Grant Date Fair Value of Non-Vested Restricted Stock, March 31, 2013	$33.34	'
Weighted average grant date fair value of restricted stock granted	$46.09	$32.13
Weighted average grant date fair value of restricted stock vested	$33.09	'
Weighted average grant date fair value of restricted stock forfeited	$37.07	'
Weighted Average Grant Date Fair Value of Non-Vested Restricted Stock, December 31, 2013	$39.43	'
Restricted Stock Awards Vested in Period, Total Fair Value	$12.30	$6.50
Non-vested restricted stock awards, total unrecognized compensation cost	$31.80	'
Weighted average number of years over which compensation cost related to non-vested restricted stock awards will be recognized	'2 years 73 days	'

STOCKBASED_COMPENSATION_Valuat

STOCK-BASED COMPENSATION Valuation Assumptions (Details) (USD $)	3 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013		Dec. 31, 2012
Stock Options [Member]	'	'	'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'		'
Expected volatility	30.10%	41.20%	32.20%		41.80%
Risk-free interest rate	1.10%	0.60%	0.90%		0.60%
Expected dividend yield	0.90%	1.20%	0.90%		1.20%
Expected life (in years)	'4 years 73 days	'4 years 110 days	'4 years 73 days		'4 years 110 days
Weighted-average grant date fair value	$10.15	$10.10	$11.15		$10.31
Employee Stock [Member]	'	'	'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'		'
Expected volatility	'	'	24.90%	[1]	38.40%	[1]
Risk-free interest rate	'	'	0.10%	[1]	0.10%	[1]
Expected dividend yield	'	'	0.90%	[1]	1.10%	[1]
Expected life (in years)	'	'	'6 months	[1]	'6 months	[1]
Weighted-average grant date fair value	'	'	$9.58	[1]	$8.95	[1]
[1]	No purchase rights were granted under the ESPP during the three months ended December 31, 2013 or 2012.

COMMON_STOCK_REPURCHASES_Detai

COMMON STOCK REPURCHASES (Details) (USD $)	9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Equity [Abstract]	'	'
Remaining shares authorized for repurchase under program	600,000	'
Shares repurchased	1,281,907	743,818
Total cost of shares repurchased	$56,800,000	$23,600,000
Average cost per share of shares repurchased	$44.27	$31.76
Value of shares withheld in satisfaction of employee tax withholding obligations	$6,014,000	$2,848,000

ACCUMULATED_OTHER_COMPREHENSIV2

ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) (USD $)	Dec. 31, 2013		Mar. 31, 2013
In Thousands, unless otherwise specified
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]	'		'
Accumulated unrealized gain (loss) on cash flow hedges (1)	($2,335)	[1]	$1,349	[1]
Accumulated foreign currency translation adjustments	4,017		4,131
Accumulated unrealized gain on investments	91		87
Accumulated other comprehensive income	$1,773		$5,567
[1]	Refer to Note 12, Foreign Currency Derivatives, which discloses the nature of the Company's derivative assets and liabilities as of DecemberB 31, 2013 and MarchB 31, 2013.

FOREIGN_CURRENCY_DERIVATIVES_D

FOREIGN CURRENCY DERIVATIVES (Details)

Dec. 31, 2013

Dec. 31, 2013

Mar. 31, 2013

Dec. 31, 2013

Mar. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Mar. 31, 2013

USD ($)

Foreign exchange option, EURO [Member]

Foreign exchange option, EURO [Member]

Foreign exchange option, GBP [Member]

Foreign exchange option, GBP [Member]

Foreign Exchange Forward, EURO [Member]

Foreign Exchange Forward, EURO [Member]

Foreign Exchange Forward, GBP [Member]

Foreign Exchange Forward, GBP [Member]

Foreign Exchange Forward, AUD [Member]

Foreign Exchange Forward, AUD [Member]

Foreign currency swap contract [Member]

Foreign currency swap contract [Member]

Foreign currency swap contract [Member]

EUR (€)

EUR (€)

GBP (£)

GBP (£)

USD ($)

EUR (€)

USD ($)

GBP (£)

USD ($)

AUD

USD ($)

MXN

MXN

Derivative [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Notional amount of contracts

'

€ 53,400,000

€ 50,200,000

£ 22,200,000

£ 19,900,000

$33,045,000

€ 24,000,000

$2,144,000

£ 1,300,000

$2,971,000

3,350,000

$21,060,000

278,350,000

325,400,000

Position

'

'

'

'

'

'Sell EUR

'Sell EUR

'Sell GBP

'Sell GBP

'Sell AUD

'Sell AUD

'

'

'

Maturity

'

'

'

'

'

'1 month

'1 month

'1 month

'1 month

'1 month

'1 month

'12 months

'12 months

'

Loss, net of tax, in accumulated other comprehensive income

($2,400,000)

'

'

'

'

'

'

'

'

'

'

'

'

'

Position

'

'

'

'

'

'

'

'

'

'

'

'Buy MXN

'Buy MXN

'

FOREIGN_CURRENCY_DERIVATIVES_D1

FOREIGN CURRENCY DERIVATIVES (Details 1) (Not Designated as Hedging Instrument [Member], USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Not Designated as Hedging Instrument [Member]	'	'	'	'
Derivative [Line Items]	'	'	'	'
Gain (loss) on foreign exchange contracts	($372)	($618)	($1,564)	$202

FOREIGN_CURRENCY_DERIVATIVES_F

FOREIGN CURRENCY DERIVATIVES FOREIGN CURRENCY DERIVATIVES (Details 2) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Gain (Loss) Included in Accumulated Other Comprehensive Income [Roll Forward]	'	'	'	'
Gain (loss) included in AOCI as of beginning of period	($2,373)	$717	$1,371	$1,937
Amount of gain (loss) recognized in OCI (effective portion)	-222	-961	-3,869	587
Net revenues	212,739	197,402	609,537	558,047
Cost of revenues	-102,412	-95,238	-293,964	-260,959
Total amount of gain (loss) reclassified from AOCI to income (loss) (effective portion)	-180	670	-83	3,438
Loss included in AOCI as of end of period	-2,415	-914	-2,415	-914
Reclassification out of Accumulated Other Comprehensive Income [Member]	'	'	'	'
Gain (Loss) Included in Accumulated Other Comprehensive Income [Roll Forward]	'	'	'	'
Net revenues	-116	266	-262	3,329
Cost of revenues	($64)	$404	$179	$109

INCOME_TAXES_Details

INCOME TAXES (Details) (USD $)	3 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2013
Income Tax Disclosure [Abstract]	'	'	'	'	'
Effective tax rate	9.60%	18.90%	19.30%	23.60%	'
Unrecognized tax benefits	$12,700,000	'	$12,700,000	'	$11,100,000
Accrued interest related to unrecognized tax benefits	1,800,000	'	1,800,000	'	2,000,000
Accrued penalties	$0	'	$0	'	$0

COMPUTATION_OF_EARNINGS_PER_CO2

COMPUTATION OF EARNINGS PER COMMON SHARE (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]	'	'	'	'
Net income	$34,383	$28,206	$84,474	$77,693
Earnings Per Share, Basic and Diluted [Abstract]	'	'	'	'
Weighted average common shares-basic	42,441	41,745	42,647	41,629
Dilutive effect of employee equity incentive plans	787	873	907	950
Weighted average common shares-diluted	43,228	42,618	43,554	42,579
Basic earnings per common share	$0.81	$0.68	$1.98	$1.87
Diluted earnings per common share	$0.80	$0.66	$1.94	$1.82
Potentially dilutive securities excluded from diluted earnings per common share because their effect is anti-dilutive	268	1,210	173	1,125

REVENUE_AND_MAJOR_CUSTOMERS_De

REVENUE AND MAJOR CUSTOMERS (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2013
	Customer	Customer	Customer	Customer	Customer
Revenue from External Customer [Line Items]	'	'	'	'	'
Total net revenues	$212,739	$197,402	$609,537	$558,047	'
Number of major customers, ten percent or greater, net revenues	0	1	0	0	'
Number of major customers, ten percent or greater, net accounts receivable	1	'	1	'	1
Concentration, accounts receivable	10.50%	'	10.50%	'	10.30%
Net revenues [Member] | Customer Concentration Risk [Member] | Ingram Micro [Member]	'	'	'	'	'
Revenue from External Customer [Line Items]	'	'	'	'	'
Concentration, net revenues	'	10.00%	'	'	'
US [Member]	'	'	'	'	'
Revenue from External Customer [Line Items]	'	'	'	'	'
Net revenues	113,042	111,847	350,155	323,438	'
Europe and Africa [Member]	'	'	'	'	'
Revenue from External Customer [Line Items]	'	'	'	'	'
Net revenues	58,997	51,095	146,476	131,622	'
Asia Pacific [Member]	'	'	'	'	'
Revenue from External Customer [Line Items]	'	'	'	'	'
Net revenues	25,917	20,637	73,077	64,055	'
Americas, excluding U.S. [Member]	'	'	'	'	'
Revenue from External Customer [Line Items]	'	'	'	'	'
Net revenues	14,783	13,823	39,829	38,932	'
Total international net revenues	'	'	'	'	'
Revenue from External Customer [Line Items]	'	'	'	'	'
Net revenues	99,697	85,555	259,382	234,609	'
Office and Contact Center [Member]	'	'	'	'	'
Revenue from External Customer [Line Items]	'	'	'	'	'
Net revenues	146,636	139,449	437,764	406,601	'
Mobile [Member]	'	'	'	'	'
Revenue from External Customer [Line Items]	'	'	'	'	'
Net revenues	52,804	44,138	137,113	113,600	'
Gaming and Computer Audio [Member]	'	'	'	'	'
Revenue from External Customer [Line Items]	'	'	'	'	'
Net revenues	9,360	9,024	23,967	23,610	'
Clarity [Member]	'	'	'	'	'
Revenue from External Customer [Line Items]	'	'	'	'	'
Net revenues	$3,939	$4,791	$10,693	$14,236	'

SUBSEQUENT_EVENTS_Details

SUBSEQUENT EVENTS (Details) (Subsequent Event [Member], USD $)	0 Months Ended
	Jan. 27, 2014
Subsequent Event [Member]	'
Subsequent Event [Line Items]	'
Dividends declared date	27-Jan-14
Cash dividend payable per share	$0.10
Dividend payable date	10-Mar-14
Date of stockholders on record for dividends declared	20-Feb-14