Logitech International (LOGI) 10-Q 27 Jan 15 2015 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Dec. 31, 2014	Jan. 15, 2015
Document and Entity Information
Entity Registrant Name	LOGITECH INTERNATIONAL SA
Entity Central Index Key	1032975
Document Type	10-Q
Document Period End Date	31-Dec-14
Amendment Flag	FALSE
Current Fiscal Year End Date	-28
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		164,233,065
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q3

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended			9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013		Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Net sales	$634,204	$628,719	[1]	$1,646,718	$1,638,392	[1]
Cost of goods sold	402,921	414,418		1,028,905	1,071,867
Gross profit	231,283	214,301		617,813	566,525
Operating expenses:
Marketing and selling	103,307	94,273		290,215	288,817
Research and development	33,616	34,577		97,257	108,589
General and administrative	29,808	31,998		100,957	90,247
Restructuring charges (credits), net	-146	822		-146	8,621
Total operating expenses	166,585	161,670		488,283	496,274
Operating income	64,698	52,631		129,530	70,251
Interest income (expense), net	224	-1,022		837	-862
Other income (expense), net	-3,016	1,082		-4,099	1,361
Income before income taxes	61,906	52,691		126,268	70,750
Provision for (benefit from) income taxes	-878	4,807		7,718	7,064
Net income	$62,784	$47,884		$118,550	$63,686
Net income per share:
Basic (in dollars per share)	$0.38	$0.30		$0.73	$0.40
Diluted (in dollars per share)	$0.38	$0.29		$0.71	$0.39
Shares used to compute net income per share :
Basic (in shares)	163,533	160,871		163,261	160,051
Diluted (in shares)	166,321	163,388		166,076	161,509
Cash dividends per share (in dollars per share)	$0.27	$0		$0.27	$0.22
[1]	Certain products within the retail product families presented in prior years have been reclassified to conform to the current year presentation.

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income	$62,784	$47,884	$118,550	$63,686
Other comprehensive income (loss):
Foreign currency translation (loss) gain	-4,400	682	-8,051	4,109
Defined benefit pension plans:
Net gain (loss) and prior service costs, net of tax	529	-384	1,476	-623
Amortization included in operating expenses	101	318	323	1,712
Hedging gain (loss):
Unrealized hedging gain (loss)	1,286	-1,198	5,038	-3,484
Reclassification of hedging loss (gain) included in cost of goods sold	-2,025	1,342	-1,840	1,526
Other comprehensive income (loss):	-4,509	760	-3,054	3,240
Total comprehensive income	$58,275	$48,644	$115,496	$66,926

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$516,613	$469,412
Accounts receivable, net	306,866	182,029
Inventories	245,740	222,402
Other current assets	65,613	59,157
Total current assets	1,134,832	933,000
Non-current assets:
Property, plant and equipment, net	90,777	88,391
Goodwill	343,437	345,010
Other intangible assets	2,728	10,529
Other assets	67,005	74,460
Total assets	1,638,779	1,451,390
Current liabilities:
Accounts payable	350,335	242,815
Accrued and other current liabilities	224,650	211,972
Total current liabilities	574,985	454,787
Non-current liabilities:
Income taxes payable	79,417	93,126
Other non-current liabilities	93,463	99,349
Total liabilities	747,865	647,262
Commitments and contingencies (note 11)
Shareholders’ equity:
Registered shares, CHF 0.25 par value: Issued and authorized shares - 173,106 at December 31, 2014 and March 31, 2014 Conditionally authorized shares - 50,000 at December 31, 2014 and March 31, 2014	30,148	30,148
Additional paid-in capital	0	0
Less shares in treasury, at cost —8,909 at December 31, 2014 and 10,206 at March 31, 2014	-93,671	-116,510
Retained earnings	1,043,293	976,292
Accumulated other comprehensive loss	-88,856	-85,802
Total shareholders’ equity	890,914	804,128
Total liabilities and shareholders’ equity	$1,638,779	$1,451,390

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical)	Dec. 31, 2014	Mar. 31, 2014
	CHF	USD ($)
Statement of Financial Position [Abstract]
Shares, par value (in CHF per share)	0.25	$0.25
Shares, issued	173,106,000	173,106,000
Shares, authorized	173,106,000	173,106,000
Shares, conditionally authorized	50,000,000	50,000,000
Treasury, at cost, shares	8,909,000	10,206,000

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Operating activities:
Net income	$118,550	$63,686
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	29,559	32,755
Amortization of other intangible assets	7,624	14,990
Share-based compensation expense	20,046	17,412
Impairment of investment	2,259	568
Loss (gain) on disposal of property, plant and equipment	-44	3,878
Excess tax benefits from share-based compensation	-2,533	-572
Deferred income taxes	-3,151	-3,561
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable, net	-131,026	-130,871
Inventories	-30,171	13,496
Other assets	-6,592	-2,968
Accounts payable	111,310	61,423
Accrued and other liabilities	21,227	40,463
Net cash provided by operating activities	137,058	110,699
Investing activities:
Purchases of property, plant and equipment	-34,777	-34,910
Investment in privately held companies	-2,550	0
Acquisitions, net of cash acquired	0	-650
Proceeds from return of investment from strategic investment	0	261
Purchase of trading investments	-3,463	-7,831
Proceeds from sales of trading investments	3,856	8,311
Net cash used in investing activities	-36,934	-34,819
Financing activities:
Payment of cash dividends	-43,767	-36,123
Contingent consideration related to prior acquisition	-100	0
Repurchase of ESPP awards	-1,078	0
Proceeds from sales of shares upon exercise of options and purchase rights	2,466	8,465
Tax withholdings related to net share settlements of restricted stock units	-7,456	-2,937
Excess tax benefits from share-based compensation	2,533	572
Net cash used in financing activities	-47,402	-30,023
Effect of exchange rate changes on cash and cash equivalents	-5,521	184
Net increase in cash and cash equivalents	47,201	46,041
Cash and cash equivalents, beginning of the period	469,412	333,824
Cash and cash equivalents, end of the period	516,613	379,865
Non-cash investing activities:
Property, plant and equipment purchased during the period and included in period end liability accounts	$2,990	$4,134

CONSOLIDATED_STATEMENTS_OF_CHA

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $)	Total	Registered Shares	Additional Paid-in Capital	Treasury Shares	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
In Thousands, unless otherwise specified
Balance at Mar. 31, 2013	$721,953	$30,148	$0	($179,990)	$966,924	($95,129)
Balance (in shares) at Mar. 31, 2013		173,106		13,855
Increase (Decrease) in Shareholders' Equity
Total comprehensive income (loss)	66,926				63,686	3,240
Tax effects from share-based awards	-2,569		-2,569
Sales of shares upon exercise of options and purchase rights	8,450		1,892	22,501	-15,943
Sales of shares upon exercise of options and purchase rights (in shares)				-1,327
Issuance of shares upon vesting of restricted stock units	-2,922		-16,886	13,964
Issuance of shares upon vesting of restricted stock units (in shares)				-817
Share-based compensation expense	17,563		17,563
Cash dividends	-36,123				-36,123
Balance at Dec. 31, 2013	773,278	30,148	0	-143,525	978,544	-91,889
Balance (in shares) at Dec. 31, 2013		173,106		11,711
Balance at Mar. 31, 2014	804,128	30,148	0	-116,510	976,292	-85,802
Balance (in shares) at Mar. 31, 2014		173,106		10,206
Increase (Decrease) in Shareholders' Equity
Total comprehensive income (loss)	115,496				118,550	-3,054
Tax effects from share-based awards	842		842
Sales of shares upon exercise of options and purchase rights	2,466		-1,609	4,075
Sales of shares upon exercise of options and purchase rights (in shares)				-238
Issuance of shares upon vesting of restricted stock units	-7,456		-18,438	18,764	-7,782
Issuance of shares upon vesting of restricted stock units (in shares)				-1,059
Share-based compensation expense	20,283		20,283
Repurchase of ESPP awards	-1,078		-1,078
Cash dividends	-43,767				-43,767
Balance at Dec. 31, 2014	$890,914	$30,148	$0	($93,671)	$1,043,293	($88,856)
Balance (in shares) at Dec. 31, 2014		173,106		8,909

The_Company

The Company	9 Months Ended
	Dec. 31, 2014
The Company
The Company	The Company
	Logitech International S.A, together with its consolidated subsidiaries, (“Logitech” or the “Company”) develops and markets innovative hardware and software products that enable or enhance digital navigation, music and video entertainment, gaming, social networking, and audio and video communication over the Internet.
	The Company has two operating segments, peripherals and video conferencing. Logitech’s peripherals segment encompasses the design, manufacturing and marketing of peripherals for personal computers (“PCs”), tablets and other digital platforms. The Company’s video conferencing segment offers scalable high-definition (“HD”) video communications endpoints, HD video conferencing systems, a Software-as-a-Service (“SaaS”) video service infrastructure software and appliance to support large-scale video deployments, and services to support these products.
	The Company sells its peripherals products to a network of distributors, retailers and original equipment manufacturers (“OEMs”). The Company sells its video conferencing products and provides services to distributors, value-added resellers, OEMs and, occasionally, direct enterprise customers. The large majority of the Company’s net sales have historically been derived from peripherals products for use by consumers.
	Logitech was founded in Switzerland in 1981 and Logitech International S.A. has been the parent holding company of Logitech since 1988. Logitech International S.A. is a Swiss holding company with its registered office in Apples, Switzerland, which conducts its business through subsidiaries in the Americas, Europe, Middle East, Africa (“EMEA”) and Asia Pacific. Shares of Logitech International S.A. are listed on both the Nasdaq Global Select Market under the trading symbol LOGI and the SIX Swiss Exchange under the trading symbol LOGN.

Revision_of_Previously_Issued_

Revision of Previously Issued Financial Statements	9 Months Ended
	Dec. 31, 2014
Accounting Changes and Error Corrections [Abstract]
Revision of Previously Issued Financial Statements	Revision of Previously Issued Financial Statements
	As disclosed in the Company’s Annual Report on Form 10-K for the year ended March 31, 2014 and in the audited consolidated financial statements contained therein, the Company has restated and revised its financial statements for the fiscal years ended March 31, 2012 and 2013, respectively. The impact of the adjustments also immaterially impact the financial statements for the first three quarters of the fiscal year ended March 31, 2014 as previously included in the Company’s quarterly reports on Form 10-Q for Fiscal 2014. The financial statements for the three and nine months ended December 31, 2013 included in this Form 10-Q are revised as described below for those adjustments and should be read in conjunction with Item 8, “Financial Statements and Supplementary Data” disclosed in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2014, filed with the SEC on November 13, 2014.
	The adjustments included in these financial statements for the three and nine months ended December 31, 2013 primarily related to a correction to revenue that was previously recorded as an out-of-period adjustment and is now being reported in the correct period, capitalization of property, plant and equipment which was previously incorrectly expensed, pension obligation, other misstatements, and the tax impact of these adjustments.
	Consolidated Statements of Operations.
	The following table presents the impact of the correcting adjustments on the Company’s previously reported consolidated statement of operations for the three and nine months ended December 31, 2013 (in thousands, except for per share amount):
		Three Months Ended									Nine Months Ended
		December 31, 2013									December 31, 2013
		As Reported			Adjustments*			As Revised			As Reported			Adjustments*			As Revised
	Net sales	$	627,890		$	829		$	628,719		$	1,637,786		$	606		$	1,638,392
	Cost of goods sold	414,528			(110		)	414,418			1,072,656			(789		)	1,071,867
	Gross profit	213,362			939			214,301			565,130			1,395			566,525
	Operating expenses:
	Marketing and selling	93,624			649			94,273			287,969			848			288,817
	Research and development	34,103			474			34,577			107,927			662			108,589
	General and administrative	31,560			438			31,998			90,103			144			90,247
	Restructuring charges, net	822			—			822			8,621			—			8,621
	Total operating expenses	160,109			1,561			161,670			494,620			1,654			496,274
	Operating income	53,253			(622		)	52,631			70,510			(259		)	70,251
	Interest expense, net	(1,022		)	—			(1,022		)	(862		)	—			(862		)
	Other income, net	1,082			—			1,082			1,361			—			1,361
	Income before income taxes	53,313			(622		)	52,691			71,009			(259		)	70,750
	Provision for income taxes	4,810			(3		)	4,807			7,065			(1		)	7,064
	Net income	$	48,503		$	(619	)	$	47,884		$	63,944		$	(258	)	$	63,686
	Net income per share:
	Basic	$	0.3		$	—		$	0.3		$	0.4		$	—		$	0.4
	Diluted	$	0.3		$	(0.01	)	$	0.29		$	0.4		$	(0.01	)	$	0.39
	Shares used to compute net income per share:
	Basic	160,871			—			160,871			160,051			—			160,051
	Diluted	163,388			—			163,388			161,509			—			161,509
	* The adjustments included in these financial statements for the three and nine months ended December 31, 2013 primarily related to a correction to revenue that was previously recorded as an out-of-period adjustment and is now being reported in the correct period, capitalization of property, plant and equipment which was previously incorrectly expensed, pension obligation, other misstatements, and the tax impact of these adjustments.
	Consolidated Statements of Comprehensive Income
	The following table presents the impact of the correcting adjustments on the Company’s previously reported consolidated statement of comprehensive income for the three and nine months ended December 31, 2013 (in thousands):
		Three Months Ended									Nine Months Ended
		December 31, 2013									December 31, 2013
		As Reported			Adjustments*			As Revised			As Reported			Adjustments*			As Revised
	Net income	$	48,503		$	(619	)	$	47,884		$	63,944		$	(258	)	$	63,686
	Other comprehensive income:
	Foreign currency translation gain	682			—			682			3,511			598			4,109
	Defined benefit pension plans:
	Net loss and prior service costs, net of taxes	(384		)	—			(384		)	(1,384		)	761			(623		)
	Amortization included in operating expenses	318			—			318			933			779			1,712
	Hedging gain (loss):
	Unrealized hedging loss	(1,198		)	—			(1,198		)	(3,484		)	—			(3,484		)
	Reclassification of hedging loss included in cost of goods sold	1,342			—			1,342			1,526			—			1,526
	Other comprehensive income:	760			—			760			1,102			2,138			3,240
	Total comprehensive income	$	49,263		$	(619	)	$	48,644		$	65,046		$	1,880		$	66,926
	* The adjustments included in these financial statements for the three and nine months ended December 31, 2013 primarily related to a correction to revenue that was previously recorded as an out-of-period adjustment and is now being reported in the correct period, capitalization of property, plant and equipment which was previously incorrectly expensed, pension obligation, other misstatements, and the tax impact of these adjustments.
	Consolidated Statement of Cash Flows
	The following table presents the impact of the correcting adjustments on the Company’s previously reported consolidated statement of cash flows for the nine months ended December 31, 2013 (in thousands):
		Nine Months Ended December 31, 2013
		As Reported			Adjustments*			As Revised
	Cash flows from operating activities:
	Net income	$	63,944		(258		)	$	63,686
	Adjustments to reconcile net income to net cash provided by operating activities:
	Depreciation	28,756			3,999			32,755
	Amortization of other intangible assets	14,990			—			14,990
	Share-based compensation expense	17,412			—			17,412
	Impairment of investments	568			—			568
	Loss on disposal of property, plant and equipment	3,878			—			3,878
	Excess tax benefits from share- based compensation	(572		)	—			(572		)
	Deferred income taxes	(3,559		)	(2		)	(3,561		)
	Changes in assets and liabilities, net of acquisitions:
	Accounts receivable, net	(130,265		)	(606		)	(130,871		)
	Inventories	14,652			(1,156		)	13,496
Other assets	(2,968		)	—			(2,968		)
Accounts payable	62,931			(1,508		)	61,423
Accrued and other liabilities	38,118			2,345			40,463
Net cash provided by operating activities	107,885			2,814			110,699
Cash flows from investing activities:
Purchases of property, plant and equipment	(32,096		)	(2,814		)	(34,910		)
Acquisitions, net of cash acquired	(650		)	—			(650		)
Proceeds from return of investment from strategic investment	261			—			261
Purchases of trading investments	(7,831		)	—			(7,831		)
Proceeds from sales of trading investments	8,311			—			8,311
Net cash used in investing activities	(32,005		)	(2,814		)	(34,819		)
Cash flows from financing activities:
Payment of cash dividends	(36,123		)	—			(36,123		)
Proceeds from sales of shares upon exercise of options and purchase rights	8,465			—			8,465
Tax withholdings related to net share settlements of restricted stock units	(2,937		)	—			(2,937		)
Excess tax benefits from share-based compensation	572			—			572
Net cash used in financing activities	(30,023		)	—			(30,023		)
Effect of exchange rate changes on cash and cash equivalents	184			—			184
Net increase in cash and cash equivalents	46,041			—			46,041
Cash and cash equivalents at beginning of period	333,824			—			333,824
Cash and cash equivalents at end of period	$	379,865		$	—		$	379,865
Property, plant and equipment purchased during the period and included in period end liability accounts	$	4,134		$	—		$	4,134
* The adjustments included in these financial statements for the nine months ended December 31, 2013 primarily related to a correction to revenue that was previously recorded as an out-of-period adjustment and is now being reported in the correct period, capitalization of property, plant and equipment which was previously incorrectly expensed, pension obligation, other misstatements, and the tax impact of these adjustments.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	9 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies
	Basis of Presentation
	The consolidated interim financial statements include the accounts of Logitech and its subsidiaries. All intercompany balances and transactions have been eliminated. The consolidated financial statements are presented in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and therefore do not include all the information required by GAAP for complete financial statements. They should be read in conjunction with the Company’s audited consolidated financial statements for the fiscal year ended March 31, 2014, included in its Annual Report on Form 10-K filed with the Securities and Exchange Commission (“SEC”) on November 13, 2014.  In the opinion of management, these consolidated financial statements include all adjustments, consisting of normal recurring adjustments, necessary for a fair statement of the results for the periods presented. Operating results for the three and nine months ended December 31, 2014 are not necessarily indicative of the results that may be expected for the fiscal year ending March 31, 2015, or any future periods.
	Fiscal Year
	The Company’s fiscal year ends on March 31. Interim quarters are thirteen week periods, each ending on last Friday of the quarters.  For purposes of presentation, the Company has indicated its quarterly periods as ending on the quarter end.
	Changes in Significant Accounting Policies
	There have been no substantial changes in the Company’s significant accounting policies during the nine months ended December 31, 2014 compared with the significant accounting policies described in its Annual Report on Form 10-K for the fiscal year ended March 31, 2014.
	Use of Estimates
	The preparation of financial statements in conformity with U.S. GAAP requires management to make judgments, estimates and assumptions that affect reported amounts of assets, liabilities, net sales and expenses, and the disclosure of contingent assets and liabilities. Examples of significant estimates and assumptions made by management involve the fair value of goodwill, accruals for customer programs, inventory valuation, valuation allowances for deferred tax assets and warranty accruals. Although these estimates are based on management’s best knowledge of current events and actions that may impact the Company in the future, actual results could differ from those estimates.
	Recent Accounting Pronouncements
	In May 2014, the FASB issued Accounting Standards Update No. 2014-09, “Revenue from Contracts with Customers (Topic 606),” (“ASU 2014-09”). ASU 2014-09 outlines a new, single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. This new revenue recognition model provides a five-step analysis in determining when and how revenue is recognized. The new model will require revenue recognition to depict the transfer of promised goods or services to customers in an amount that reflects the consideration a company expects to receive in exchange for those goods or services. The new standard will be effective for the Company beginning April 1, 2017.  Early application is prohibited.  The Company is currently evaluating the impact that adopting this new guidance will have on its consolidated financial statements.
	In November 2014, the FASB issued Accounting Standards Update No. 2014-17, "Business Combinations (Topic 805): Pushdown Accounting (a consensus of the FASB Emerging Issues Task Force)" ("ASU 2014-17"). ASU 2014-17 provides an acquired entity with an option to apply pushdown accounting in its separate financial statements upon occurrence of an event in which an acquirer obtains control of the acquired entity. An acquired entity may elect the option to apply pushdown accounting in the reporting period in which the change-in-control event occurs. The new standard is effective on November 18, 2014.  Early application is prohibited.  After the effective date, an acquired entity can make an election to apply the guidance to
	future change-in-control events or to its most recent change-in-control event. However, if the financial statements for the period in which the most recent change-in-control event occurred already have been issued or made available to be issued, the application of this guidance would be a change in accounting principle. The Company has adopted this new guidance and there's no impact on its consolidated financial statements.

Net_Income_per_Share

Net Income per Share	9 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Net Income per Share	Net Income per Share
	The computations of basic and diluted net income per share for the Company were as follows (in thousands, except per share amounts):
		Three Months Ended				Nine Months Ended
		December 31,				December 31,
		2014		2013		2014		2013
	Net income	$	62,784	$	47,884	$	118,550	$	63,686
	Shares used in net income per share computation:
	Weighted average shares outstanding - basic	163,533		160,871		163,261		160,051
	Effect of potentially dilutive equivalent shares	2,788		2,517		2,815		1,458
	Weighted average shares outstanding - diluted	166,321		163,388		166,076		161,509
	Net income per share:
	Basic	$	0.38	$	0.3	$	0.73	$	0.4
	Diluted	$	0.38	$	0.29	$	0.71	$	0.39
	Share equivalents attributable to outstanding stock options and RSUs of 8,079,134 and 11,080,000 for the three months ended December 31, 2014 and 2013 and 8,079,134 and 15,874,000 for the nine months ended December 31, 2014 and 2013 were excluded from the calculation of diluted net income per share because to do so would have been anti-dilutive for the periods indicated.

Employee_Benefit_Plans

Employee Benefit Plans	9 Months Ended
	Dec. 31, 2014
Employee Benefit Plans
Employee Benefit Plans	Employee Benefit Plans
	Employee Share Purchase Plans and Stock Incentive Plans
	As of December 31, 2014, the Company offers the 2006 ESPP (2006 Employee Share Purchase Plan (Non-U.S.)), the 1996 ESPP (1996 Employee Share Purchase Plan (U.S.)), the 2006 Plan (2006 Stock Incentive Plan) and the 2012 Plan (2012 Stock Inducement Equity Plan). Please refer to our fiscal year 2014 Form 10-K for additional information regarding the Employee Share Purchase Plans and Stock Incentive Plans.
	The Company was not current with its periodic reports required to be filed with the SEC and was therefore unable to issue any shares under its Registration Statements on Form S-8 from July 31, 2014 to November 26, 2014. Given the proximity of the unavailability of those registration statements and the end of the then-current ESPP offering period, also on July 31, 2014, the Compensation Committee authorized the termination of the then-current ESPP offering period and a one-time payment to each participant in an amount equal to the fifteen percent (15%) discount at which shares would otherwise have been repurchased pursuant to the then-current period of the ESPPs. This one-time payment was accounted for as a repurchase of equity awards that reduced additional paid in capital, resulting in no additional compensation cost. No new ESPP offering periods were initiated during the three months ended December 31, 2014.
	The following table summarizes the share-based compensation expense and related tax benefit recognized for the three and nine months ended December 31, 2014 and 2013 (in thousands):
		Three Months Ended						Nine Months Ended
		December 31,						December 31,
		2014			2013			2014			2013
	Cost of goods sold	$	560		$	672		$	1,724		$	1,843
	Marketing and selling	2,786			3,057			6,995			5,980
	Research and development	1,066			1,906			2,462			3,840
	General and administrative	2,635			3,278			8,865			5,749
	Total share-based compensation expense	7,047			8,913			20,046			17,412
	Income tax benefit	(1,623		)	(168		)	(4,720		)	(2,343		)
	Total share-based compensation expense, net of income tax	$	5,424		$	8,745		$	15,326		$	15,069
	During the three months ended December 31, 2014 and 2013, the Company capitalized $0.6 million and $0.5 million of stock-based compensation expenses as inventory, respectively.
	Defined Contribution Plans
	Certain of the Company’s subsidiaries have defined contribution employee benefit plans covering all or a portion of their employees. Contributions to these plans are discretionary for certain plans and are based on specified or statutory requirements for others. The charges to expense for these plans for the three months ended December 31, 2014 and 2013 were $1.6 million and $1.4 million, and for the nine months ended December 31, 2014 and 2013 were $4.3 million and $4.7 million, respectively.
	Defined Benefit Plans
	Certain of the Company’s subsidiaries sponsor defined benefit pension plans or non-retirement post-employment benefits covering substantially all of their employees. Benefits are provided based on employees’ years of service and earnings, or in accordance with applicable employee benefit regulations. The Company’s practice is to fund amounts sufficient to meet the requirements set forth in the applicable employee benefit and tax regulations. The cost recorded of $1.8 million and $2.4 million for the three months ended December 31, 2014 and 2013 and $5.7 million and $7.6 million for the nine months ended December 31, 2014 and 2013 was primarily related to service costs.

Income_Taxes

Income Taxes	9 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes
	The Company is incorporated in Switzerland but operates in various countries with differing tax laws and rates. Further, a portion of the Company’s income (loss) before taxes and the provision for (benefit from) income taxes are generated outside of Switzerland.
	The income tax benefit for the three months ended December 31, 2014 was $0.9 million based on an effective income tax rate of (1.4)% of pre-tax income, compared to an income tax provision of $4.8 million based on an effective income tax rate of 9.1% of pre-tax income for the three months ended December 31, 2013. The income tax provision for the nine months ended December 31, 2014 was $7.7 million based on an effective income tax rate of 6.1% of pre-tax income, compared to an income tax provision of $7.1 million based on an effective income tax rate of 10.0% of pre-tax income for the nine months ended December 31, 2013.  The change in the effective income tax rate for the three and nine months ended December 31, 2014, compared to the three and nine months ended December 31, 2013, was primarily due to the mix of income and losses in the various tax jurisdictions in which the Company operates. There was a discrete tax benefit of $9.0 million and $11.1 million in the three and nine months ended December 31, 2014, respectively, from the reversal of uncertain tax positions resulting from expiration of the statutes of limitations. In the three and nine months ended December 31, 2013, the discrete tax benefit from the reversal of uncertain tax positions resulting from expiration of the statutes of limitations was $10.0 million and $12.0 million, respectively.
	On December 19, 2014, the enactment in the U.S. of the Tax Increase Prevention Act of 2014 extended the U.S. federal research and development tax credit through December 31, 2014 which had previously expired on December 31, 2013. The income tax benefit and income tax provision in the three and nine months ended December 31, 2014 reflected a $0.8 million tax benefit, respectively, as a result of the extension of the tax credit.
	As of December 31 and March 31, 2014, the total amount of unrecognized tax benefits due to uncertain tax positions was $85.1 million and $91.0 million, respectively, of which $83.9 million and $86.1 million would affect the effective income tax rate if recognized.
	As of December 31, 2014, the Company had $79.4 million in non-current income taxes payable and $0.1 million in current income taxes payable, including interest and penalties, related to our income tax liability for uncertain tax positions. As of March 31, 2014, the Company had $93.1 million in non-current income taxes payable and $0.3 million in current income taxes payable.  Pursuant to ASU 2013-11, which became effective in the first quarter of fiscal year 2015, the Company reclassified $9.8 million of unrecognized tax benefits previously presented as non-current income taxes payable as a reduction to non-current deferred tax assets for tax credit carryforwards.
	The Company continues to recognize interest and penalties related to unrecognized tax positions in income tax expense. As of December 31 and March 31, 2014, the Company had $5.2 million and $5.6 million of accrued interest and penalties related to uncertain tax positions, respectively.
	Although the Company has adequately provided for uncertain tax positions, the provisions on these positions may change as revised estimates are made or the underlying matters are settled or otherwise resolved. During fiscal year 2015, the Company will continue to review its tax positions and provide for or reverse unrecognized tax benefits as issues arise. During the next 12 months, it is reasonably possible that the amount of unrecognized tax benefits could increase or decrease significantly due to changes in tax law in various jurisdictions, new tax audits and changes in the U.S. dollar as compared to foreign currencies. Excluding these factors, uncertain tax positions may decrease by as much as $16.0 million from the lapse of the statutes of limitations in various jurisdictions during the next 12 months.

Balance_Sheet_Components

Balance Sheet Components	9 Months Ended
	Dec. 31, 2014
Balance Sheet Related Disclosures [Abstract]
Balance Sheet Components	Balance Sheet Components
	The following table presents the components of certain balance sheet asset amounts as of December 31 and March 31, 2014 (in thousands):
		December 31,			March 31,
		2014			2014
	Accounts receivable, net:
	Accounts receivable	$	537,240		$	338,194
	Allowance for doubtful accounts	(1,576		)	(1,712		)
	Allowance for sales returns	(17,706		)	(19,472		)
	Allowance for cooperative marketing arrangements	(36,764		)	(24,135		)
	Allowance for customer incentive programs	(74,096		)	(41,400		)
	Allowance for pricing programs	(100,232		)	(69,446		)
		$	306,866		$	182,029
	Inventories:
	Raw materials	$	31,006		$	24,031
	Work-in-process	29			42
	Finished goods	214,705			198,329
		$	245,740		$	222,402
	Other current assets:
	Income tax and value-added tax receivables	$	21,729		$	18,252
	Deferred tax assets	26,863			27,013
	Prepaid expenses and other assets	17,021			13,892
		$	65,613		$	59,157
	Property, plant and equipment, net:
	Plant, buildings and improvements	$	70,174		$	69,897
	Equipment	138,979			134,975
	Computer equipment	41,106			40,610
	Software	81,787			81,179
		332,046			326,661
	Less accumulated depreciation	(268,828		)	(256,424		)
		63,218			70,237
	Construction-in-process	24,832			15,362
	Land	2,727			2,792
		$	90,777		$	88,391
	Other assets:
	Deferred tax assets	$	43,778		$	52,883
	Trading investments	17,483			16,611
	Other assets	5,744			4,966
		$	67,005		$	74,460
	The following table presents the components of certain balance sheet liability amounts as of December 31 and March 31, 2014 (in thousands):
		December 31,			March 31,
		2014			2014
	Accrued and other current liabilities:
	Accrued personnel expenses	$	54,803		$	55,165
	Accrued marketing expenses	13,259			12,844
	Indirect customer incentive programs	35,868			31,737
	Accrued restructuring	1,772			2,121
	Deferred revenue	22,862			22,529
	Accrued freight and duty	11,723			6,276
	Value-added taxes payable	9,825			9,354
	Accrued royalties	3,387			2,653
	Warranty accrual	12,799			13,905
	Employee benefit plan obligation	1,498			1,100
	Income taxes payable	8,894			7,701
	Other current liabilities	47,960			46,587
		$	224,650		$	211,972
	Non-current liabilities:
	Warranty accrual	$	9,293		$	10,475
	Obligation for deferred compensation	17,483			16,611
	Long term restructuring	4,391			5,440
	Employee benefit plan obligation	34,917			37,899
	Deferred rent	14,200			15,555
	Deferred tax liability	1,964			2,304
	Long term deferred revenue	9,692			9,350
	Other non-current liabilities	1,523			1,715
	$	93,463		$	99,349

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Dec. 31, 2014
Financial Instruments, Owned, at Fair Value [Abstract]
Fair Value Measurements	Fair Value Measurements
	Fair Value Measurements
	The Company considers fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. The Company uses the following three-level fair value hierarchy to establish the priorities of the inputs used to measure fair value:
	•Level 1 — Quoted prices in active markets for identical assets or liabilities.
	•Level 2 — Observable inputs other than quoted market prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data.
	•Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.
	The following table presents the Company’s financial assets and liabilities, that were accounted for at fair value, excluding assets related to the Company’s defined benefit pension plans, classified by the level within the fair value hierarchy (in thousands):
		31-Dec-14						31-Mar-14
		Level 1			Level 2			Level 1			Level 2
	Cash equivalents:
	Cash equivalents	$	274,552		$	—		$	200,641		$	—
		$	274,552		—			$	200,641		$	—
	Trading investments for deferred compensation plan:
	Money market funds	$	2,981		—			$	3,139		$	—
	Mutual funds	14,502			—			13,472			—
		$	17,483		—			$	16,611		$	—
	Foreign exchange derivative assets	$	—		$	697		$	—		$	155
	Foreign exchange derivative liabilities	$	—		$	38		$	—		$	701
	There were no significant Level 3 financial assets as of December 31, 2014 or March 31, 2014.
	Cash and Cash Equivalents
	Cash equivalents consist of bank demand deposits and time deposits. The time deposits have original maturities of three months or less. Cash equivalents are carried at cost, which approximates fair value.
	Investment Securities
	The Company’s investment securities portfolio consists of marketable securities (money market and mutual funds) related to a deferred compensation plan at December 31, 2014 and March 31, 2014.
	The marketable securities related to the deferred compensation plan are classified as non-current assets. Since participants in the deferred compensation plan may select the mutual funds in which their compensation deferrals are invested within the confines of the Rabbi Trust, which holds the marketable securities, the Company has designated these marketable securities as trading investments, although there is no intent to actively buy and sell securities within the objective of generating profits on short-term difference in market prices. Management has classified the investments as non-current assets because final sale of the investments or realization of proceeds by plan participants is not expected within the Company’s normal operating cycle of one year. The marketable securities are recorded at a fair value of $17.5 million and $16.6 million as of December 31, 2014 and March 31, 2014, respectively, based on quoted market prices. Quoted market prices are observable inputs that are classified as Level 1 securities. Earnings, gains and losses on trading investments are included in other income (expense), net.
	Derivative Financial Instruments
	Under the agreements with the respective counterparties to the Company’s derivative contracts, subject to applicable requirements, the Company does not net settle transactions with any single net amount payable by one party to the other. In accordance with ASU 2011-11, the Company presents its derivative instruments at gross fair values in the Consolidated Balance Sheets as of December 31, 2014 and March 31, 2014.
	The following table presents the fair values of the Company’s derivative instruments and their accounting line presentation on its Consolidated Balance Sheets as of December 31, 2014 and March 31, 2014 (in thousands):
		Derivatives
		Asset						Liability
		December 31,			March 31,			December 31,			March 31,
		2014			2014			2014			2014
	Designed as hedging instruments:
	Cash flow hedges	$	693		$	4		$	—		$	243
	Not designed as hedging instruments:
	Foreign exchange contracts	4			151			38			458
		$	697		$	155		$	38		$	701
	The following table presents the amounts of gains and losses on the Company’s derivative instruments for the three and nine months ended December 31, 2014 and 2013 (in thousands):
		Three Months Ended
		December 31,
		Net Amount of						Amount of Loss (Gain)					Amount of Gain (Loss)
		Gain (Loss) Deferred as a						Reclassified from Accumulated					Immediately Recognized in
		Component of Accumulated						Other Comprehensive Income to					Other Income (Expense), Net
		Other Comprehensive Income						Costs of Goods Sold
		2014			2013			2014			2013		2014			2013
	Designed as hedging instruments:
	Cash flow hedges	$	(739	)	$	144		$	(2,025	)	$	1,342	$	36		$	8
	Not designed as hedging instruments:
	Foreign exchange contracts	—			—			—			—		1,585			899
		$	(739	)	$	144		$	(2,025	)	$	1,342	$	1,621		$	907
		Nine Months Ended
		December 31,
		Net Amount of						Amount of Loss (Gain)					Amount of Gain (Loss)
		Gain (Loss) Deferred as a						Reclassified from Accumulated					Immediately Recognized in
		Component of Accumulated						Other Comprehensive Income to					Other Income (Expense), Net
		Other Comprehensive Income						Costs of Goods Sold
		2014			2013			2014			2013		2014			2013
	Designed as hedging instruments:
	Cash flow hedges	$	3,198		$	(1,958	)	$	(1,840	)	$	1,526	$	(20	)	$	54
	Not designed as hedging instruments:
	Foreign exchange contracts	—			—			—			—		1,908			1,807
		$	3,198		$	(1,958	)	$	(1,840	)	$	1,526	$	1,888		$	1,861
	Cash Flow Hedges
	The Company enters into foreign exchange forward contracts to hedge against exposure to changes in foreign currency exchange rates related to its subsidiaries’ forecasted inventory purchases. The Company has one entity with a euro functional currency that purchases inventory in U.S. dollars. The primary risk managed by using derivative instruments is the foreign currency exchange rate risk. The Company has designated these derivatives as cash flow hedges. The Company does not use derivative financial instruments for trading or speculative purposes. These hedging contracts mature within four months, and are denominated in the same currency as the underlying transactions. Gains and losses in the fair value of the effective portion of the hedges are deferred as a component of accumulated other comprehensive loss until the hedged inventory purchases are sold, at which time the gains or losses are reclassified to cost of goods sold. The Company assesses the effectiveness of the hedges by comparing changes in the spot rate of the currency underlying the forward contract with changes in the spot rate of the currency in which the forecasted transaction will be consummated. If the underlying transaction being hedged fails to occur or if a portion of the hedge does not generate offsetting changes in the foreign currency exposure of forecasted inventory purchases, the Company immediately recognizes the gain or loss on the associated financial instrument in other income (expense). Such gains and losses were immaterial during the three and nine months ended December 31, 2014 and 2013. Cash flows from such hedges are classified as operating activities in the consolidated statements of cash flows. The notional amounts of foreign exchange forward contracts outstanding related to forecasted inventory purchases were $41.4 million (€33.9 million) and $51.8 million (€37.6 million) at December 31, 2014 and March 31, 2014. The notional amount represents the future cash flows under contracts to purchase foreign currencies.
	Other Derivatives
The Company also enters into foreign exchange forward and swap contracts to reduce the short-term effects of foreign currency fluctuations on certain foreign currency receivables or payables. These contracts generally have one month maturity. The primary risk managed by using forward and swap contracts is the foreign currency exchange rate risk. The gains or losses on foreign exchange contracts are recognized in other income (expense), net based on the changes in fair value.
The notional amounts of foreign exchange contracts outstanding as of December 31 and March 31, 2014 relating to foreign currency receivables or payables were $42.7 million and $53.6 million, respectively. The contracts outstanding at December 31, 2014 and March 31, 2014 consisted of contracts in Mexican pesos, Japanese yen, British pounds, Taiwanese dollars and Australian dollars.
The fair value of all foreign exchange forward contracts and foreign exchange swap contracts is determined based on observable market transactions of spot currency rates and forward rates. Cash flows from these contracts are classified as operating activities in the Consolidated Statements of Cash Flows.

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	9 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets
	The Company conducts a goodwill impairment analysis annually at December 31 or more frequently if indicators of impairment exist or if a decision is made to sell or exit a business. A significant amount of judgment is involved in determining if an indicator of impairment has occurred. Such indicators may include deterioration in general economic conditions, negative developments in equity and credit markets, adverse changes in the markets in which an entity operates, increases in input costs that have a negative effect on earnings and cash flows, or a trend of negative or declining cash flows over multiple periods, among others. The fair value that could be realized in an actual transaction may differ from that used to evaluate the impairment of goodwill.
	In reviewing goodwill for impairment, an entity has the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not (greater than 50%) that the estimated fair value of a reporting unit is less than its carrying amount. If an entity elects to perform a qualitative assessment and determines that an impairment is more likely than not, the entity is then required to perform the two-step quantitative impairment test, otherwise no further analysis is required. An entity also may elect not to perform the qualitative assessment and, instead, proceed directly to the two-step quantitative impairment test. The ultimate outcome of the goodwill impairment review for a reporting unit should be the same whether an entity chooses to perform the qualitative assessment or proceeds directly to the two-step quantitative impairment test.
	Goodwill is allocated among and evaluated for impairment at the reporting unit level, which is defined as an operating segment or one level below an operating segment. The Company has two reporting units, Peripherals and Video Conferencing.
	Peripherals
	The Company performed its annual impairment analysis of the goodwill for its peripherals reporting unit at December 31, 2014 by performing a qualitative assessment and concluded that it was more likely than not that the fair value of its peripherals reporting unit exceeded its carrying amount.  In assessing the qualitative factors, the Company considered the impact of these key factors: change in industry and competitive environment, growth in market capitalization of $2.3 billion as of December 31, 2014 from $2.2 billion a year ago, and budgeted-to-actual revenue performance from prior year. The peripherals reporting unit has seen an improvement in operating income from $64.8 million and $117.8 million for the three and nine months ended December 31, 2013 to $76.1 million and $160.3 million for three and nine months ended December 31, 2014, respectively.
	Video Conferencing
	The Company proceeded directly to the two-step quantitative impairment test for the video conferencing reporting unit and performed Step 1 assessment at December 31, 2014. The Company used a market approach and income approach (discounted cash flow model) to estimate the current fair value of the video conferencing reporting unit when testing for impairment. A number of significant assumptions and estimates are involved in the application of the market approach and income approach.
	The market approach utilizes the identification of comparable companies and applying certain revenue multiples or earnings multiples of these comparable companies to the respective revenue and earnings metrics of the reporting unit.
	The income approach utilizes forecasted operating cash flows, which includes certain assumptions and estimates related to markets and market share, sales volumes and prices, production costs, tax rates, capital spending, discount rate, and working capital changes. Cash flow forecasts are based on approved business unit operating plans. The Company uses a third party valuation expert in the development of our market and income approach models.
	Key assumptions used in the Step 1 income approach analysis included , the estimated compound annual growth rate (“CAGR”) during the forecast period, use of the appropriate discount rate, and long-term growth rates for purposes of determining a terminal value at the end of the discrete forecast period. A sensitivity assessment of key assumptions for the video conferencing reporting unit Step 1 test is presented below:
	• CAGR assumption was 6.9% through fiscal year 2022, with a flat forecast in the remainder of fiscal year 2015, and higher growth rates from fiscal years 2016 through 2020, reducing to a growth rate of 4.0% in fiscal year 2022. The forecasted growth contrasts with the recent performance of the video conferencing reporting unit, when the Company experienced a decline in revenue (see Note 13 for further details). The video conferencing reporting unit is in the process of transitioning its product portfolio to the recently announced Lifesize Cloud, a software-as-a-service (SaaS) offering. Sales of Lifesize Cloud are growing rapidly, offsetting a shift from it's on-premise infrastructure products.  Video systems sales are growing and are expected to continue growing as an integral part of the full Lifesize solution. The Company has been investing in the Lifesize Cloud within video conferencing reporting unit. If the CAGR rate were decreased to 2.3%, holding all other assumptions constant, the fair value of the video conferencing reporting unit would decrease, under income approach, to below its carrying value.
	•Discount rate assumption was 14.0%. If the discount rate were increased to 17.0%, holding all other assumptions constant, it would result in fair value of the video conferencing reporting unit decrease to below its carrying value under income approach.
	•Terminal growth rate assumption was 4.0%. If the terminal growth rate were decreased to (2.2)%, holding all other assumptions constant, it would result in fair value of the video conferencing reporting unit decrease to below its carrying value under income approach.
	The assumptions used also included a reduction in future operating expenses as a percentage of revenue, driven by increases in forecasted revenue as described above, combined with reduced operating expenses related to cost cutting initiatives.
	The annual Step 1 assessment resulted in the Company determining that the video conferencing reporting unit passed the Step 1 test because the estimated fair value of video conferencing reporting unit from Step 1 assessment exceeded its carrying value by approximately 38.0%, thus not requiring a Step 2 assessment of this reporting unit. This result presents a future video conferencing reporting unit goodwill impairment risk to the Company since the margin it cleared the current Step 1 assessment was not significant.
	In the event the estimated fair value of a reporting unit is less than the carrying value, additional analysis would be required. The additional analysis would compare the carrying amount of the reporting unit's goodwill with the implied fair value of that goodwill, which may involve the use of valuation experts. The implied fair value of goodwill is the excess of the fair value of the reporting unit over the fair value amounts assigned to all of the assets and liabilities of that unit as if the reporting unit was acquired in a business combination and the fair value of the reporting unit represented the purchase price. If the carrying value of goodwill exceeds its implied fair value, an impairment loss equal to such excess would be recognized, which could significantly and adversely impact reported results of operations and shareholders' equity.
	Determining the fair value of a reporting unit is judgmental in nature and requires the use of significant estimates and assumptions, including revenue growth rates, operating margins, discount rates and future market conditions, among others. It is reasonably possible that changes in the judgments, assumptions and estimates that the Company used in assessing the fair value of the video conferencing reporting unit result in the goodwill to become impaired. A goodwill impairment charge would have the effect of decreasing the Company’s earnings or increasing its losses in such period. If the Company is required to take a substantial impairment charge, its operating results would be materially and adversely affected in such period.
	As a result of the Company’s annual goodwill impairment assessments, there was no impairment of goodwill as of December 31, 2014.
	The following table summarizes the activity in the Company’s goodwill balance during the nine months ended December 31, 2014 (in thousands):
		31-Dec-14
				Video
		Peripherals		Conferencing			Total
	Beginning of the period	$	219,415	$	125,595		$	345,010
	Foreign currency impact	—		(1,573		)	(1,573		)
	End of the period	$	219,415	$	124,022		$	343,437
	Amortization expense for other intangible assets was $2.3 million and $4.5 million for the three months ended December 31, 2014 and 2013, respectively, and $7.6 million and $15.0 million for the nine months ended December 31, 2014 and 2013, respectively. The Company expects that amortization expense for the remaining three months of fiscal year 2015 will be $0.7 million, and annual amortization expense for fiscal years 2016 and 2017 will be $1.8 million and $0.2 million, respectively.

Financing_Arrangements

Financing Arrangements	9 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Financing Arrangements	Financing Arrangements
	The Company had several uncommitted, unsecured bank lines of credit aggregating $38.7 million as of December 31, 2014. There are no financial covenants under these lines of credit with which the Company must comply. As of December 31, 2014, the Company had outstanding bank guarantees of $7.5 million under these lines of credit.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies
	Product Warranties
	All of the Company’s peripherals products are covered by warranty to be free from defects in material and workmanship for periods ranging from one year to five years. At the time of sale, the Company accrues a warranty liability for estimated costs to provide products, parts or services to repair or replace products in satisfaction of the warranty obligation. The Company’s estimate of costs to fulfill its warranty obligations is based on historical experience and expectations of future conditions. When the Company experiences changes in warranty claim activity or costs associated with fulfilling those claims, the warranty liability is adjusted accordingly.
	Changes in the Company’s warranty liability for the three and nine months ended December 31, 2014 and 2013 were as follows (in thousands):
		Three Months Ended						Nine Months Ended
		December 31,						December 31,
		2014			2013			2014			2013
	Beginning of the period	$	22,204		$	23,021		$	24,380		$	21,442
	Provision	2,381			4,343			6,607			11,532
	Settlements	(2,493		)	(3,842		)	(8,895		)	(11,779		)
	Adjustment (1)	—			—			—			2,327
	End of the period	$	22,092		$	23,522		$	22,092		$	23,522
	(1) During the nine month period December 31, 2013, the warranty liability allocated to the Company’s - Remotes product category was reclassified from liabilities held for sale.
	Purchase Commitments
	Commitments for inventory purchases are made in the normal course of business to original design manufacturers, contract manufacturers and other suppliers and are expected to be fulfilled by December 31, 2014. Fixed purchase commitments for capital expenditures primarily related to commitments for computer hardware and leasehold improvements. Although open purchase orders are considered enforceable and legally binding, the terms generally allow the Company the option to reschedule and adjust its requirements based on the business needs prior to delivery of goods or performance of services.
	Other Contingencies
	The Company is subject to an ongoing formal investigation by the SEC, relating to certain issues including the accounting for Revue inventory valuation reserves that resulted in the restatement described in the Fiscal 2014 Form 10-K, revision to the Company’s financial statements concerning warranty accruals and amortization of intangible assets presented in the Company’s Form 10-K/A, filed on August 7, 2013, and the Company’s transactions with a distributor for Fiscal Year 2007 through Fiscal Year 2009. The Company is cooperating with the SEC in its ongoing investigation. The Company has entered into an agreement with the SEC to extend the statute of limitations. The Company cannot predict the outcome of the investigation at this time and any potential fines or penalties, if any, that may arise from the investigation are currently not estimable.
	Guarantees
	Logitech Europe S.A.  guaranteed payments of a third-party contract manufacturer’s purchase obligations. As of December 31, 2014, the maximum amount of this guarantee was $3.5 million, of which $1.4 million of guaranteed purchase obligations were outstanding.
	Indemnifications
	The Company indemnifies certain of its suppliers and customers for losses arising from matters such as intellectual property disputes and product safety defects, subject to certain restrictions. The scope of these indemnities varies, but in some instances, includes indemnification for damages and expenses, including reasonable attorneys’ fees. As of December 31, 2014, no amounts have been accrued for these indemnification provisions. The Company does not believe, based on historical experience and information currently available, that it is probable that any material amounts will be required to be paid under its indemnification arrangements.
	The Company also indemnifies its current and former directors and certain of its current and former officers. Certain costs incurred for providing such indemnification may be recoverable under various insurance policies. The Company is unable to reasonably estimate the maximum amount that could be payable under these arrangements because these exposures are not limited, the obligations are conditional in nature and the facts and circumstances involved in any situation that might arise are variable.
	Legal Proceedings
	From time to time the Company is involved in claims and legal proceedings that arise in the ordinary course of its business. The Company is currently subject to several such claims and a small number of legal proceedings. The Company believes that these matters lack merit and intends to vigorously defend against them. Based on currently available information, the Company does not believe that resolution of pending matters will have a material adverse effect on its financial condition, cash flows or results of operations. However, litigation is subject to inherent uncertainties, and there can be no assurances that the Company’s defenses will be successful or that any such lawsuit or claim would not have a material adverse impact on the Company’s business, financial condition, cash flows and results of operations in a particular period. Any claims or proceedings against the Company, whether meritorious or not, can have an adverse impact because of defense costs, diversion of management and operational resources, negative publicity and other factors. Any failure to obtain necessary license or other rights, or litigation arising out of intellectual property claims, could adversely affect the Company’s business.

Shareholders_Equity

Shareholders' Equity	9 Months Ended
	Dec. 31, 2014
Stockholders' Equity Note [Abstract]
Shareholders' Equity	Shareholders’ Equity
	In March 2014, the Company’s Board of Directors approved the 2014 share buyback program, which authorizes the Company to use up to $250.0 million to purchase its own shares. The Company’s share buyback program is expected to remain in effect for a period of three years. Shares may be repurchased from time to time on the open market with consideration given to Logitech’s stock price, market conditions and other factors.
	There were no share repurchases during the nine months ended December 31, 2014 and 2013. During most of the nine month period ended December 31, 2014, the Company was not current with its periodic reports required to be filed with the SEC and therefore lost its ability to buy back shares. The Company regained its ability to repurchase shares upon filing its Form 10-Q with SEC on November 26, 2014.
	Accumulated Other Comprehensive Income (Loss)
	The components of accumulated other comprehensive income (loss) was as follows (in thousands):
		Accumulated Other Comprehensive Income (Loss)
		Cumulative			Defined			Deferred
		Translation			Benefit			Hedging			Total
		Adjustment			Plan (1)			Gains (Losses)
	March 31, 2014	$	(70,999	)	$	(14,288	)	$	(515	)	$	(85,802	)
	Other comprehensive income (loss)	(8,051		)	1,799			3,198			(3,054		)
	31-Dec-14	$	(79,050	)	$	(12,489	)	$	2,683		$	(88,856	)
	(1)        Net of tax of $192 as of both December 31, 2014 and March 31, 2014.

Segment_Information

Segment Information	9 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Segment Information	Segment Information
	The Company has two reporting segments, peripherals and video conferencing, based on product markets and internal organizational structure. The peripherals segment encompasses the design, manufacturing and marketing of peripherals for PCs, tablets and other digital platforms. The video conferencing segment encompasses the design, manufacturing and marketing of Lifesize video conferencing products, infrastructure and services for the enterprise, public sector and other business markets. The Company’s reporting segments do not record revenue on sales between segments as such sales are not material.
	Operating performance measures for the peripherals segment and the video conferencing segment are reported separately to the Company's Chief Executive Officer (“CEO”), who is considered to be the Company’s Chief Operating Decision Maker (“CODM”). The CEO periodically reviews information such as net sales and operating income (loss) for each operating segment to make business decisions. These operating performance measures do not include share-based compensation expense and amortization of intangible assets. Share-based compensation expense and amortization of intangible assets are presented in the following financial information by operating segment as “other income (expense), net.” Assets by operating segment are not presented since the Company does not present such data to the CODM.
	Net sales and operating income (loss) for the Company’s operating segments for the three and nine months ended December 31, 2014 and 2013 were as follows (in thousands):
		Three Months Ended						Nine Months Ended
		December 31,						December 31,
		2014			2013			2014			2013
	Net sales:
	Peripherals	$	604,322		$	598,763		$	1,562,624		$	1,548,666
	Video conferencing	29,882			29,956			84,094			89,726
		$	634,204		$	628,719		$	1,646,718		$	1,638,392
	Segment operating income (loss):
	Peripherals (1)	$	76,114		$	64,806		$	160,268		$	117,784
	Video conferencing (1)	(2,103		)	1,210			(3,068		)	(15,131		)
		74,011			66,016			157,200			102,653
	Other income (expense):
	Share-based compensation	(7,047		)	(8,913		)	(20,046		)	(17,412		)
	Amortization of intangibles	(2,266		)	(4,472		)	(7,624		)	(14,990		)
	Interest income, net	224			(1,022		)	837			(862		)
	Other income (expense), net	(3,016		)	1,082			(4,099		)	1,361
	Income before income taxes	$	61,906		$	52,691		$	126,268		$	70,750
	(1)   Peripherals operating results include $0.1 million restructuring credit and a $0.8 million restructuring charge during the three months ended December 31, 2014 and 2013, respectively. Peripherals operating results include $0.1 million restructuring credit and $2.7 million restructuring charges during the nine months ended December 31, 2014 and 2013, respectively. Video conferencing operating results include $0.1 million restructuring credit and $5.9 million of restructuring charges during the nine months ended December 31, 2014 and 2013.
	Net sales by product family, excluding intercompany transactions, for the three and nine months ended December 31, 2014 and 2013 were as follows (in thousands):
		Three Months Ended						Nine Months Ended
		December 31,						December 31,
		2014			2013 (1)			2014			2013 (1)
	Peripherals:
	PC Gaming	$	70,188		$	58,173		$	164,570		$	141,645
	Tablet & Other Accessories	55,100			77,009			114,973			150,263
	Mobile Speakers	62,264			34,198			139,631			68,032
	Growth	187,552			169,380			419,174			359,940
	Pointing Devices	141,789			141,757			382,524			387,064
	PC Keyboards & Desktops	114,058			108,682			325,299			311,955
	Audio-PC &Wearables	58,696			69,021			166,999			195,082
	Video	46,682			38,154			118,822			105,740
	Remotes	25,116			26,049			56,224			53,950
	Profit Maximization	386,341			383,663			1,049,868			1,053,791
	Other	132			11,178			2,259			28,354
	Non-Strategic	132			11,178			2,259			28,354
	Retail	574,025			564,221			1,471,301			1,442,085
	OEM	30,297			34,542			91,323			106,581
		604,322			598,763			1,562,624			1,548,666
	Video conferencing	29,882			29,956			84,094			89,726
		$	634,204		$	628,719		$	1,646,718		$	1,638,392
	(1)  Certain products within the retail product families presented in prior years have been reclassified to conform to the current year presentation.
	Net sales to unaffiliated customers by geographic region (based on the customers’ location) for the three and nine months ended December 31, 2014 and 2013 were as follows (in thousands):
		Three Months Ended						Nine Months Ended
		December 31,						December 31,
		2014			2013			2014			2013
	Americas	$	280,652		$	258,682		$	718,274		$	662,122
	EMEA	221,043			238,972			564,314			596,719
	Asia Pacific	132,509			131,065			364,130			379,551
	Total net sales	$	634,204		$	628,719		$	1,646,718		$	1,638,392
	Sales are attributed to countries on the basis of the customers’ locations. The United States represented 36% and 34% of the Company’s total consolidated net sales for the three months ended December 31, 2014 and 2013, respectively. No other single country represented more than 10% of the Company’s total consolidated net sales during those periods. Revenues from sales to customers in Switzerland, the Company’s home domicile, represented 2% and 2% of the Company’s total consolidated net sales for the three months ended December 31, 2014 and 2013. One customer group of the Company’s peripheral operating segment represented 14% and 15% of sales for the three months ended December 31, 2014 and 2013, respectively. The United States represented 36% and 35% of the Company’s total consolidated net sales for the nine months ended December 31, 2014 and 2013, respectively. Revenues from sales to customers in Switzerland, the Company’s home domicile, represented 2% and 1% of the Company's total consolidated net sales for the nine months ended December 31, 2014 and 2013. No other single country represented more than 10% of the Company’s total consolidated net sales during those periods. One customer group of the Company’s peripherals reporting segment represented 15% and 14% for the nine months ended December 31, 2014 and 2013, respectively. No other customer makes up more than 10% of revenue for both the three and nine months ended December 31, 2014 and 2013.
	Long-lived assets by geographic region were as follows (in thousands):
		December 31,			March 31,
		2014			2014
	Americas	$	47,510		$	45,166
	EMEA	3,742			5,154
	Asia Pacific	39,525			38,071
		$	90,777		$	88,391
	Long-lived assets in the United States and China were $47.3 million and $34.5 million as of December 31, 2014 and $44.9 million and $31.9 million at March 31, 2014. No other countries represented more than 10% of the Company’s total consolidated long-lived assets as of December 31 and March 31, 2014. Long-lived assets in Switzerland, the Company’s home domicile, were $1.4 million and $1.6 million at December 31 and March 31, 2014.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation
	The consolidated interim financial statements include the accounts of Logitech and its subsidiaries. All intercompany balances and transactions have been eliminated. The consolidated financial statements are presented in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and therefore do not include all the information required by GAAP for complete financial statements. They should be read in conjunction with the Company’s audited consolidated financial statements for the fiscal year ended March 31, 2014, included in its Annual Report on Form 10-K filed with the Securities and Exchange Commission (“SEC”) on November 13, 2014.  In the opinion of management, these consolidated financial statements include all adjustments, consisting of normal recurring adjustments, necessary for a fair statement of the results for the periods presented. Operating results for the three and nine months ended December 31, 2014 are not necessarily indicative of the results that may be expected for the fiscal year ending March 31, 2015, or any future periods.
Fiscal Year	Fiscal Year
	The Company’s fiscal year ends on March 31. Interim quarters are thirteen week periods, each ending on last Friday of the quarters.  For purposes of presentation, the Company has indicated its quarterly periods as ending on the quarter end.
Use of Estimates	Use of Estimates
	The preparation of financial statements in conformity with U.S. GAAP requires management to make judgments, estimates and assumptions that affect reported amounts of assets, liabilities, net sales and expenses, and the disclosure of contingent assets and liabilities. Examples of significant estimates and assumptions made by management involve the fair value of goodwill, accruals for customer programs, inventory valuation, valuation allowances for deferred tax assets and warranty accruals. Although these estimates are based on management’s best knowledge of current events and actions that may impact the Company in the future, actual results could differ from those estimates.
Recent Accounting Pronouncements	Recent Accounting Pronouncements
	In May 2014, the FASB issued Accounting Standards Update No. 2014-09, “Revenue from Contracts with Customers (Topic 606),” (“ASU 2014-09”). ASU 2014-09 outlines a new, single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. This new revenue recognition model provides a five-step analysis in determining when and how revenue is recognized. The new model will require revenue recognition to depict the transfer of promised goods or services to customers in an amount that reflects the consideration a company expects to receive in exchange for those goods or services. The new standard will be effective for the Company beginning April 1, 2017.  Early application is prohibited.  The Company is currently evaluating the impact that adopting this new guidance will have on its consolidated financial statements.
	In November 2014, the FASB issued Accounting Standards Update No. 2014-17, "Business Combinations (Topic 805): Pushdown Accounting (a consensus of the FASB Emerging Issues Task Force)" ("ASU 2014-17"). ASU 2014-17 provides an acquired entity with an option to apply pushdown accounting in its separate financial statements upon occurrence of an event in which an acquirer obtains control of the acquired entity. An acquired entity may elect the option to apply pushdown accounting in the reporting period in which the change-in-control event occurs. The new standard is effective on November 18, 2014.  Early application is prohibited.  After the effective date, an acquired entity can make an election to apply the guidance to
	future change-in-control events or to its most recent change-in-control event. However, if the financial statements for the period in which the most recent change-in-control event occurred already have been issued or made available to be issued, the application of this guidance would be a change in accounting principle. The Company has adopted this new guidance and there's no impact on its consolidated financial statements.

Revision_of_Previously_Issued_1

Revision of Previously Issued Financial Statements (Tables)	9 Months Ended
	Dec. 31, 2014
Accounting Changes and Error Corrections [Abstract]
Schedule of impact of the accounting errors on the Company's previously-reported consolidated statements of operations	The following table presents the impact of the correcting adjustments on the Company’s previously reported consolidated statement of operations for the three and nine months ended December 31, 2013 (in thousands, except for per share amount):
		Three Months Ended									Nine Months Ended
		December 31, 2013									December 31, 2013
		As Reported			Adjustments*			As Revised			As Reported			Adjustments*			As Revised
	Net sales	$	627,890		$	829		$	628,719		$	1,637,786		$	606		$	1,638,392
	Cost of goods sold	414,528			(110		)	414,418			1,072,656			(789		)	1,071,867
	Gross profit	213,362			939			214,301			565,130			1,395			566,525
	Operating expenses:
	Marketing and selling	93,624			649			94,273			287,969			848			288,817
	Research and development	34,103			474			34,577			107,927			662			108,589
	General and administrative	31,560			438			31,998			90,103			144			90,247
	Restructuring charges, net	822			—			822			8,621			—			8,621
	Total operating expenses	160,109			1,561			161,670			494,620			1,654			496,274
	Operating income	53,253			(622		)	52,631			70,510			(259		)	70,251
	Interest expense, net	(1,022		)	—			(1,022		)	(862		)	—			(862		)
	Other income, net	1,082			—			1,082			1,361			—			1,361
	Income before income taxes	53,313			(622		)	52,691			71,009			(259		)	70,750
	Provision for income taxes	4,810			(3		)	4,807			7,065			(1		)	7,064
	Net income	$	48,503		$	(619	)	$	47,884		$	63,944		$	(258	)	$	63,686
	Net income per share:
	Basic	$	0.3		$	—		$	0.3		$	0.4		$	—		$	0.4
	Diluted	$	0.3		$	(0.01	)	$	0.29		$	0.4		$	(0.01	)	$	0.39
	Shares used to compute net income per share:
	Basic	160,871			—			160,871			160,051			—			160,051
	Diluted	163,388			—			163,388			161,509			—			161,509
	* The adjustments included in these financial statements for the three and nine months ended December 31, 2013 primarily related to a correction to revenue that was previously recorded as an out-of-period adjustment and is now being reported in the correct period, capitalization of property, plant and equipment which was previously incorrectly expensed, pension obligation, other misstatements, and the tax impact of these adjustments.
Schedule of impact of the accounting errors on the Company's previously-reported consolidated statements of comprehensive income	The following table presents the impact of the correcting adjustments on the Company’s previously reported consolidated statement of comprehensive income for the three and nine months ended December 31, 2013 (in thousands):
		Three Months Ended									Nine Months Ended
		December 31, 2013									December 31, 2013
		As Reported			Adjustments*			As Revised			As Reported			Adjustments*			As Revised
	Net income	$	48,503		$	(619	)	$	47,884		$	63,944		$	(258	)	$	63,686
	Other comprehensive income:
	Foreign currency translation gain	682			—			682			3,511			598			4,109
	Defined benefit pension plans:
	Net loss and prior service costs, net of taxes	(384		)	—			(384		)	(1,384		)	761			(623		)
	Amortization included in operating expenses	318			—			318			933			779			1,712
	Hedging gain (loss):
	Unrealized hedging loss	(1,198		)	—			(1,198		)	(3,484		)	—			(3,484		)
	Reclassification of hedging loss included in cost of goods sold	1,342			—			1,342			1,526			—			1,526
	Other comprehensive income:	760			—			760			1,102			2,138			3,240
	Total comprehensive income	$	49,263		$	(619	)	$	48,644		$	65,046		$	1,880		$	66,926
	* The adjustments included in these financial statements for the three and nine months ended December 31, 2013 primarily related to a correction to revenue that was previously recorded as an out-of-period adjustment and is now being reported in the correct period, capitalization of property, plant and equipment which was previously incorrectly expensed, pension obligation, other misstatements, and the tax impact of these adjustments.
Schedule of impact of the accounting errors on the Company's previously-reported consolidated statements of cash flows	The following table presents the impact of the correcting adjustments on the Company’s previously reported consolidated statement of cash flows for the nine months ended December 31, 2013 (in thousands):
		Nine Months Ended December 31, 2013
		As Reported			Adjustments*			As Revised
	Cash flows from operating activities:
	Net income	$	63,944		(258		)	$	63,686
	Adjustments to reconcile net income to net cash provided by operating activities:
	Depreciation	28,756			3,999			32,755
	Amortization of other intangible assets	14,990			—			14,990
	Share-based compensation expense	17,412			—			17,412
	Impairment of investments	568			—			568
	Loss on disposal of property, plant and equipment	3,878			—			3,878
	Excess tax benefits from share- based compensation	(572		)	—			(572		)
	Deferred income taxes	(3,559		)	(2		)	(3,561		)
	Changes in assets and liabilities, net of acquisitions:
	Accounts receivable, net	(130,265		)	(606		)	(130,871		)
	Inventories	14,652			(1,156		)	13,496
	Other assets	(2,968		)	—			(2,968		)
	Accounts payable	62,931			(1,508		)	61,423
	Accrued and other liabilities	38,118			2,345			40,463
	Net cash provided by operating activities	107,885			2,814			110,699
	Cash flows from investing activities:
	Purchases of property, plant and equipment	(32,096		)	(2,814		)	(34,910		)
	Acquisitions, net of cash acquired	(650		)	—			(650		)
	Proceeds from return of investment from strategic investment	261			—			261
	Purchases of trading investments	(7,831		)	—			(7,831		)
	Proceeds from sales of trading investments	8,311			—			8,311
	Net cash used in investing activities	(32,005		)	(2,814		)	(34,819		)
	Cash flows from financing activities:
	Payment of cash dividends	(36,123		)	—			(36,123		)
	Proceeds from sales of shares upon exercise of options and purchase rights	8,465			—			8,465
	Tax withholdings related to net share settlements of restricted stock units	(2,937		)	—			(2,937		)
	Excess tax benefits from share-based compensation	572			—			572
	Net cash used in financing activities	(30,023		)	—			(30,023		)
	Effect of exchange rate changes on cash and cash equivalents	184			—			184
	Net increase in cash and cash equivalents	46,041			—			46,041
	Cash and cash equivalents at beginning of period	333,824			—			333,824
	Cash and cash equivalents at end of period	$	379,865		$	—		$	379,865
	Property, plant and equipment purchased during the period and included in period end liability accounts	$	4,134		$	—		$	4,134
	* The adjustments included in these financial statements for the nine months ended December 31, 2013 primarily related to a correction to revenue that was previously recorded as an out-of-period adjustment and is now being reported in the correct period, capitalization of property, plant and equipment which was previously incorrectly expensed, pension obligation, other misstatements, and the tax impact of these adjustments.

Net_Income_Per_Share_Tables

Net Income Per Share (Tables)	9 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Schedule of computations of basic and diluted net income per share	The computations of basic and diluted net income per share for the Company were as follows (in thousands, except per share amounts):
		Three Months Ended				Nine Months Ended
		December 31,				December 31,
		2014		2013		2014		2013
	Net income	$	62,784	$	47,884	$	118,550	$	63,686
	Shares used in net income per share computation:
	Weighted average shares outstanding - basic	163,533		160,871		163,261		160,051
	Effect of potentially dilutive equivalent shares	2,788		2,517		2,815		1,458
	Weighted average shares outstanding - diluted	166,321		163,388		166,076		161,509
	Net income per share:
	Basic	$	0.38	$	0.3	$	0.73	$	0.4
	Diluted	$	0.38	$	0.29	$	0.71	$	0.39

Employee_Benefit_Plans_Tables

Employee Benefit Plans (Tables)	9 Months Ended
	Dec. 31, 2014
Employee Benefit Plans
Summary of share-based compensation expense and related tax benefit recognized	The following table summarizes the share-based compensation expense and related tax benefit recognized for the three and nine months ended December 31, 2014 and 2013 (in thousands):
		Three Months Ended						Nine Months Ended
		December 31,						December 31,
		2014			2013			2014			2013
	Cost of goods sold	$	560		$	672		$	1,724		$	1,843
	Marketing and selling	2,786			3,057			6,995			5,980
	Research and development	1,066			1,906			2,462			3,840
	General and administrative	2,635			3,278			8,865			5,749
	Total share-based compensation expense	7,047			8,913			20,046			17,412
	Income tax benefit	(1,623		)	(168		)	(4,720		)	(2,343		)
	Total share-based compensation expense, net of income tax	$	5,424		$	8,745		$	15,326		$	15,069

Balance_Sheet_Components_Table

Balance Sheet Components (Tables)	9 Months Ended
	Dec. 31, 2014
Balance Sheet Related Disclosures [Abstract]
Schedule of components of balance sheet asset	The following table presents the components of certain balance sheet asset amounts as of December 31 and March 31, 2014 (in thousands):
		December 31,			March 31,
		2014			2014
	Accounts receivable, net:
	Accounts receivable	$	537,240		$	338,194
	Allowance for doubtful accounts	(1,576		)	(1,712		)
	Allowance for sales returns	(17,706		)	(19,472		)
	Allowance for cooperative marketing arrangements	(36,764		)	(24,135		)
	Allowance for customer incentive programs	(74,096		)	(41,400		)
	Allowance for pricing programs	(100,232		)	(69,446		)
		$	306,866		$	182,029
	Inventories:
	Raw materials	$	31,006		$	24,031
	Work-in-process	29			42
	Finished goods	214,705			198,329
		$	245,740		$	222,402
	Other current assets:
	Income tax and value-added tax receivables	$	21,729		$	18,252
	Deferred tax assets	26,863			27,013
	Prepaid expenses and other assets	17,021			13,892
		$	65,613		$	59,157
	Property, plant and equipment, net:
	Plant, buildings and improvements	$	70,174		$	69,897
	Equipment	138,979			134,975
	Computer equipment	41,106			40,610
	Software	81,787			81,179
		332,046			326,661
	Less accumulated depreciation	(268,828		)	(256,424		)
		63,218			70,237
	Construction-in-process	24,832			15,362
	Land	2,727			2,792
		$	90,777		$	88,391
	Other assets:
	Deferred tax assets	$	43,778		$	52,883
	Trading investments	17,483			16,611
	Other assets	5,744			4,966
		$	67,005		$	74,460
Schedule of components of balance sheet liability	The following table presents the components of certain balance sheet liability amounts as of December 31 and March 31, 2014 (in thousands):
		December 31,			March 31,
		2014			2014
	Accrued and other current liabilities:
	Accrued personnel expenses	$	54,803		$	55,165
	Accrued marketing expenses	13,259			12,844
	Indirect customer incentive programs	35,868			31,737
	Accrued restructuring	1,772			2,121
	Deferred revenue	22,862			22,529
	Accrued freight and duty	11,723			6,276
	Value-added taxes payable	9,825			9,354
	Accrued royalties	3,387			2,653
	Warranty accrual	12,799			13,905
	Employee benefit plan obligation	1,498			1,100
	Income taxes payable	8,894			7,701
	Other current liabilities	47,960			46,587
		$	224,650		$	211,972
	Non-current liabilities:
	Warranty accrual	$	9,293		$	10,475
	Obligation for deferred compensation	17,483			16,611
	Long term restructuring	4,391			5,440
	Employee benefit plan obligation	34,917			37,899
	Deferred rent	14,200			15,555
	Deferred tax liability	1,964			2,304
	Long term deferred revenue	9,692			9,350
	Other non-current liabilities	1,523			1,715
		$	93,463		$	99,349

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Dec. 31, 2014
Financial Instruments, Owned, at Fair Value [Abstract]
Schedule of financial assets and liabilities accounted for at fair value and classified by level within the fair value hierarchy	The following table presents the Company’s financial assets and liabilities, that were accounted for at fair value, excluding assets related to the Company’s defined benefit pension plans, classified by the level within the fair value hierarchy (in thousands):
		31-Dec-14						31-Mar-14
		Level 1			Level 2			Level 1			Level 2
	Cash equivalents:
	Cash equivalents	$	274,552		$	—		$	200,641		$	—
		$	274,552		—			$	200,641		$	—
	Trading investments for deferred compensation plan:
	Money market funds	$	2,981		—			$	3,139		$	—
	Mutual funds	14,502			—			13,472			—
		$	17,483		—			$	16,611		$	—
	Foreign exchange derivative assets	$	—		$	697		$	—		$	155
	Foreign exchange derivative liabilities	$	—		$	38		$	—		$	701
Schedule of fair values of derivative instruments and their locations on the balance sheets	The following table presents the fair values of the Company’s derivative instruments and their accounting line presentation on its Consolidated Balance Sheets as of December 31, 2014 and March 31, 2014 (in thousands):
		Derivatives
		Asset						Liability
		December 31,			March 31,			December 31,			March 31,
		2014			2014			2014			2014
	Designed as hedging instruments:
	Cash flow hedges	$	693		$	4		$	—		$	243
	Not designed as hedging instruments:
	Foreign exchange contracts	4			151			38			458
		$	697		$	155		$	38		$	701
Schedule of amounts of gains and losses on derivative instruments	The following table presents the amounts of gains and losses on the Company’s derivative instruments for the three and nine months ended December 31, 2014 and 2013 (in thousands):
		Three Months Ended
		December 31,
		Net Amount of						Amount of Loss (Gain)					Amount of Gain (Loss)
		Gain (Loss) Deferred as a						Reclassified from Accumulated					Immediately Recognized in
		Component of Accumulated						Other Comprehensive Income to					Other Income (Expense), Net
		Other Comprehensive Income						Costs of Goods Sold
		2014			2013			2014			2013		2014			2013
	Designed as hedging instruments:
	Cash flow hedges	$	(739	)	$	144		$	(2,025	)	$	1,342	$	36		$	8
	Not designed as hedging instruments:
	Foreign exchange contracts	—			—			—			—		1,585			899
		$	(739	)	$	144		$	(2,025	)	$	1,342	$	1,621		$	907
		Nine Months Ended
		December 31,
		Net Amount of						Amount of Loss (Gain)					Amount of Gain (Loss)
		Gain (Loss) Deferred as a						Reclassified from Accumulated					Immediately Recognized in
		Component of Accumulated						Other Comprehensive Income to					Other Income (Expense), Net
		Other Comprehensive Income						Costs of Goods Sold
		2014			2013			2014			2013		2014			2013
	Designed as hedging instruments:
	Cash flow hedges	$	3,198		$	(1,958	)	$	(1,840	)	$	1,526	$	(20	)	$	54
	Not designed as hedging instruments:
	Foreign exchange contracts	—			—			—			—		1,908			1,807
		$	3,198		$	(1,958	)	$	(1,840	)	$	1,526	$	1,888		$	1,861

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of activity in the goodwill account	The following table summarizes the activity in the Company’s goodwill balance during the nine months ended December 31, 2014 (in thousands):
		31-Dec-14
				Video
		Peripherals		Conferencing			Total
	Beginning of the period	$	219,415	$	125,595		$	345,010
	Foreign currency impact	—		(1,573		)	(1,573		)
	End of the period	$	219,415	$	124,022		$	343,437

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	9 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Schedule of warranty liability	Changes in the Company’s warranty liability for the three and nine months ended December 31, 2014 and 2013 were as follows (in thousands):
		Three Months Ended						Nine Months Ended
		December 31,						December 31,
		2014			2013			2014			2013
	Beginning of the period	$	22,204		$	23,021		$	24,380		$	21,442
	Provision	2,381			4,343			6,607			11,532
	Settlements	(2,493		)	(3,842		)	(8,895		)	(11,779		)
	Adjustment (1)	—			—			—			2,327
	End of the period	$	22,092		$	23,522		$	22,092		$	23,522
	(1) During the nine month period December 31, 2013, the warranty liability allocated to the Company’s - Remotes product category was reclassified from liabilities held for sale.

Shareholders_Equity_Tables

Shareholders' Equity (Tables)	9 Months Ended
	Dec. 31, 2014
Stockholders' Equity Note [Abstract]
Schedule of components of accumulated other comprehensive income (loss)	The components of accumulated other comprehensive income (loss) was as follows (in thousands):
		Accumulated Other Comprehensive Income (Loss)
		Cumulative			Defined			Deferred
		Translation			Benefit			Hedging			Total
		Adjustment			Plan (1)			Gains (Losses)
	March 31, 2014	$	(70,999	)	$	(14,288	)	$	(515	)	$	(85,802	)
	Other comprehensive income (loss)	(8,051		)	1,799			3,198			(3,054		)
	31-Dec-14	$	(79,050	)	$	(12,489	)	$	2,683		$	(88,856	)
	(1)        Net of tax of $192 as of both December 31, 2014 and March 31, 2014.

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Schedule of net sales and operating income (loss) for the Company's reporting segments	Net sales and operating income (loss) for the Company’s operating segments for the three and nine months ended December 31, 2014 and 2013 were as follows (in thousands):
		Three Months Ended						Nine Months Ended
		December 31,						December 31,
		2014			2013			2014			2013
	Net sales:
	Peripherals	$	604,322		$	598,763		$	1,562,624		$	1,548,666
	Video conferencing	29,882			29,956			84,094			89,726
		$	634,204		$	628,719		$	1,646,718		$	1,638,392
	Segment operating income (loss):
	Peripherals (1)	$	76,114		$	64,806		$	160,268		$	117,784
	Video conferencing (1)	(2,103		)	1,210			(3,068		)	(15,131		)
		74,011			66,016			157,200			102,653
	Other income (expense):
	Share-based compensation	(7,047		)	(8,913		)	(20,046		)	(17,412		)
	Amortization of intangibles	(2,266		)	(4,472		)	(7,624		)	(14,990		)
	Interest income, net	224			(1,022		)	837			(862		)
	Other income (expense), net	(3,016		)	1,082			(4,099		)	1,361
	Income before income taxes	$	61,906		$	52,691		$	126,268		$	70,750
	(1)   Peripherals operating results include $0.1 million restructuring credit and a $0.8 million restructuring charge during the three months ended December 31, 2014 and 2013, respectively.
Schedule of net sales by product categories, excluding intercompany transactions	Net sales by product family, excluding intercompany transactions, for the three and nine months ended December 31, 2014 and 2013 were as follows (in thousands):
		Three Months Ended						Nine Months Ended
		December 31,						December 31,
		2014			2013 (1)			2014			2013 (1)
	Peripherals:
	PC Gaming	$	70,188		$	58,173		$	164,570		$	141,645
	Tablet & Other Accessories	55,100			77,009			114,973			150,263
	Mobile Speakers	62,264			34,198			139,631			68,032
	Growth	187,552			169,380			419,174			359,940
	Pointing Devices	141,789			141,757			382,524			387,064
	PC Keyboards & Desktops	114,058			108,682			325,299			311,955
	Audio-PC &Wearables	58,696			69,021			166,999			195,082
	Video	46,682			38,154			118,822			105,740
	Remotes	25,116			26,049			56,224			53,950
	Profit Maximization	386,341			383,663			1,049,868			1,053,791
	Other	132			11,178			2,259			28,354
	Non-Strategic	132			11,178			2,259			28,354
	Retail	574,025			564,221			1,471,301			1,442,085
	OEM	30,297			34,542			91,323			106,581
		604,322			598,763			1,562,624			1,548,666
	Video conferencing	29,882			29,956			84,094			89,726
		$	634,204		$	628,719		$	1,646,718		$	1,638,392
	(1)  Certain products within the retail product families presented in prior years have been reclassified to conform to the current year presentation.
Schedule of net sales to unaffiliated customers by geographic region	Net sales to unaffiliated customers by geographic region (based on the customers’ location) for the three and nine months ended December 31, 2014 and 2013 were as follows (in thousands):
		Three Months Ended						Nine Months Ended
		December 31,						December 31,
		2014			2013			2014			2013
	Americas	$	280,652		$	258,682		$	718,274		$	662,122
	EMEA	221,043			238,972			564,314			596,719
	Asia Pacific	132,509			131,065			364,130			379,551
	Total net sales	$	634,204		$	628,719		$	1,646,718		$	1,638,392
Schedule of long-lived assets by geographic region	Long-lived assets by geographic region were as follows (in thousands):
		December 31,			March 31,
		2014			2014
	Americas	$	47,510		$	45,166
	EMEA	3,742			5,154
	Asia Pacific	39,525			38,071
		$	90,777		$	88,391

The_Company_Additional_Informa

The Company- Additional Information (Details)	9 Months Ended
	Dec. 31, 2014
	segment
The Company
Number of operating segments	2

Revision_of_Previously_Issued_2

Revision of Previously Issued Financial Statements- Consolidated Statement of Operations (Details) (USD $)	3 Months Ended			9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013		Dec. 31, 2014	Dec. 31, 2013
Consolidated Statements of Operations
Net sales	$634,204	$628,719	[1]	$1,646,718	$1,638,392	[1]
Cost of goods sold	402,921	414,418		1,028,905	1,071,867
Gross profit	231,283	214,301		617,813	566,525
Operating expenses:
Marketing and selling	103,307	94,273		290,215	288,817
Research and development	33,616	34,577		97,257	108,589
General and administrative	29,808	31,998		100,957	90,247
Restructuring charges (credits), net	-146	822		-146	8,621
Total operating expenses	166,585	161,670		488,283	496,274
Operating income	64,698	52,631		129,530	70,251
Interest expense, net	224	-1,022		837	-862
Other income, net	-3,016	1,082		-4,099	1,361
Income before income taxes	61,906	52,691		126,268	70,750
Provision for (benefit from) income taxes	-878	4,807		7,718	7,064
Net income	62,784	47,884		118,550	63,686
Net income per share:
Basic (in dollars per share)	$0.38	$0.30		$0.73	$0.40
Diluted (in dollars per share)	$0.38	$0.29		$0.71	$0.39
Shares used to compute net income per share :
Basic (in shares)	163,533	160,871		163,261	160,051
Diluted (in shares)	166,321	163,388		166,076	161,509
As Reported
Consolidated Statements of Operations
Net sales		627,890			1,637,786
Cost of goods sold		414,528			1,072,656
Gross profit		213,362			565,130
Operating expenses:
Marketing and selling		93,624			287,969
Research and development		34,103			107,927
General and administrative		31,560			90,103
Restructuring charges (credits), net		822			8,621
Total operating expenses		160,109			494,620
Operating income		53,253			70,510
Interest expense, net		-1,022			-862
Other income, net		1,082			1,361
Income before income taxes		53,313			71,009
Provision for (benefit from) income taxes		4,810			7,065
Net income		48,503			63,944
Net income per share:
Basic (in dollars per share)		$0.30			$0.40
Diluted (in dollars per share)		$0.30			$0.40
Shares used to compute net income per share :
Basic (in shares)		160,871			160,051
Diluted (in shares)		163,388			161,509
Adjustments
Consolidated Statements of Operations
Net sales		829	[2]		606	[2]
Cost of goods sold		-110	[2]		-789	[2]
Gross profit		939	[2]		1,395	[2]
Operating expenses:
Marketing and selling		649	[2]		848	[2]
Research and development		474	[2]		662	[2]
General and administrative		438	[2]		144	[2]
Total operating expenses		1,561	[2]		1,654	[2]
Operating income		-622	[2]		-259	[2]
Income before income taxes		-622	[2]		-259	[2]
Provision for (benefit from) income taxes		-3	[2]		-1	[2]
Net income		($619)	[2]		($258)	[2],[3]
Net income per share:
Diluted (in dollars per share)		($0.01)	[2]		($0.01)	[2]
[1]	Certain products within the retail product families presented in prior years have been reclassified to conform to the current year presentation.
[2]	The adjustments included in these financial statements for the three and nine months ended December 31, 2013 primarily related to a correction to revenue that was previously recorded as an out-of-period adjustment and is now being reported in the correct period, capitalization of property, plant and equipment which was previously incorrectly expensed, pension obligation, other misstatements, and the tax impact of these adjustments.
[3]	The adjustments included in these financial statements for the nine months ended December 31, 2013 primarily related to a correction to revenue that was previously recorded as an out-of-period adjustment and is now being reported in the correct period, capitalization of property, plant and equipment which was previously incorrectly expensed, pension obligation, other misstatements, and the tax impact of these adjustments.

Revision_of_Previously_Issued_3

Revision of Previously Issued Financial Statements- Consolidated Statement of Comprehensive Income (Details) (USD $)	3 Months Ended			9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013		Dec. 31, 2014	Dec. 31, 2013
Consolidated Statements of Comprehensive Loss
Net income	$62,784	$47,884		$118,550	$63,686
Other comprehensive income (loss):
Foreign currency translation gain	-4,400	682		-8,051	4,109
Defined benefit pension plans:
Net loss and prior service costs, net of taxes	529	-384		1,476	-623
Amortization included in operating expenses	101	318		323	1,712
Hedging gain (loss):
Unrealized hedging loss	1,286	-1,198		5,038	-3,484
Reclassification of hedging loss (gain) included in cost of goods sold	-2,025	1,342		-1,840	1,526
Other comprehensive income (loss):	-4,509	760		-3,054	3,240
Total comprehensive income	58,275	48,644		115,496	66,926
As Reported
Consolidated Statements of Comprehensive Loss
Net income		48,503			63,944
Other comprehensive income (loss):
Foreign currency translation gain		682			3,511
Defined benefit pension plans:
Net loss and prior service costs, net of taxes		-384			-1,384
Amortization included in operating expenses		318			933
Hedging gain (loss):
Unrealized hedging loss		-1,198			-3,484
Reclassification of hedging loss (gain) included in cost of goods sold		1,342			1,526
Other comprehensive income (loss):		760			1,102
Total comprehensive income		49,263			65,046
Adjustments
Consolidated Statements of Comprehensive Loss
Net income		-619	[1]		-258	[1],[2]
Other comprehensive income (loss):
Foreign currency translation gain		0	[1]		598	[1]
Defined benefit pension plans:
Net loss and prior service costs, net of taxes		0	[1]		761	[1]
Amortization included in operating expenses		0	[1]		779	[1]
Hedging gain (loss):
Unrealized hedging loss		0	[1]		0	[1]
Reclassification of hedging loss (gain) included in cost of goods sold		0	[1]		0	[1]
Other comprehensive income (loss):		0	[1]		2,138	[1]
Total comprehensive income		($619)	[1]		$1,880	[1]
[1]	The adjustments included in these financial statements for the three and nine months ended December 31, 2013 primarily related to a correction to revenue that was previously recorded as an out-of-period adjustment and is now being reported in the correct period, capitalization of property, plant and equipment which was previously incorrectly expensed, pension obligation, other misstatements, and the tax impact of these adjustments.
[2]	The adjustments included in these financial statements for the nine months ended December 31, 2013 primarily related to a correction to revenue that was previously recorded as an out-of-period adjustment and is now being reported in the correct period, capitalization of property, plant and equipment which was previously incorrectly expensed, pension obligation, other misstatements, and the tax impact of these adjustments.

Revision_of_Previously_Issued_4

Revision of Previously Issued Financial Statements- Consolidated Statement of Cash Flows (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net income	$118,550	$63,686
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	29,559	32,755
Amortization of other intangible assets	7,624	14,990
Share-based compensation expense	20,046	17,412
Impairment of investments	2,259	568
Loss on disposal of property, plant and equipment	-44	3,878
Excess Tax Benefit from Share-based Compensation, Operating Activities	-2,533	-572
Deferred income taxes	-3,151	-3,561
Changes in assets and liabilities, net of acquisitions:
Accounts receivable, net	-131,026	-130,871
Inventories	-30,171	13,496
Other assets	-6,592	-2,968
Accounts payable	111,310	61,423
Accrued and other liabilities	21,227	40,463
Net cash provided by operating activities	137,058	110,699
Cash flows from investing activities:
Purchases of property, plant and equipment	-34,777	-34,910
Acquisitions, net of cash acquired	0	-650
Proceeds from return of investment from strategic investment	0	261
Purchase of trading investments	-3,463	-7,831
Proceeds from sales of trading investments	3,856	8,311
Net cash used in investing activities	-36,934	-34,819
Cash flows from financing activities:
Payment of cash dividends	-43,767	-36,123
Proceeds from sales of shares upon exercise of options and purchase rights	2,466	8,465
Tax withholdings related to net share settlements of restricted stock units	-7,456	-2,937
Excess tax benefits from share-based compensation	2,533	572
Net cash used in financing activities	-47,402	-30,023
Effect of exchange rate changes on cash and cash equivalents	-5,521	184
Net increase in cash and cash equivalents	47,201	46,041
Cash and cash equivalents, beginning of the period	469,412	333,824
Cash and cash equivalents, end of the period	516,613	379,865
Property, plant and equipment purchased during the period and included in period end liability accounts	2,990	4,134
As Reported
Cash flows from operating activities:
Net income		63,944
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation		28,756
Amortization of other intangible assets		14,990
Share-based compensation expense		17,412
Impairment of investments		568
Loss on disposal of property, plant and equipment		3,878
Excess Tax Benefit from Share-based Compensation, Operating Activities		-572
Deferred income taxes		-3,559
Changes in assets and liabilities, net of acquisitions:
Accounts receivable, net		-130,265
Inventories		14,652
Other assets		-2,968
Accounts payable		62,931
Accrued and other liabilities		38,118
Net cash provided by operating activities		107,885
Cash flows from investing activities:
Purchases of property, plant and equipment		-32,096
Acquisitions, net of cash acquired		-650
Proceeds from return of investment from strategic investment		261
Purchase of trading investments		-7,831
Proceeds from sales of trading investments		8,311
Net cash used in investing activities		-32,005
Cash flows from financing activities:
Payment of cash dividends		-36,123
Proceeds from sales of shares upon exercise of options and purchase rights		8,465
Tax withholdings related to net share settlements of restricted stock units		-2,937
Excess tax benefits from share-based compensation		572
Net cash used in financing activities		-30,023
Effect of exchange rate changes on cash and cash equivalents		184
Net increase in cash and cash equivalents		46,041
Cash and cash equivalents, beginning of the period		333,824
Cash and cash equivalents, end of the period		379,865
Property, plant and equipment purchased during the period and included in period end liability accounts		4,134
Adjustments
Cash flows from operating activities:
Net income		-258	[1],[2]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation		3,999	[1]
Deferred income taxes		-2	[1]
Changes in assets and liabilities, net of acquisitions:
Accounts receivable, net		-606	[1]
Inventories		-1,156	[1]
Other assets		0	[1]
Accounts payable		-1,508	[1]
Accrued and other liabilities		2,345	[1]
Net cash provided by operating activities		2,814	[1]
Cash flows from investing activities:
Purchases of property, plant and equipment		-2,814	[1]
Acquisitions, net of cash acquired		0	[1]
Purchase of trading investments		0	[1]
Proceeds from sales of trading investments		0	[1]
Net cash used in investing activities		($2,814)	[1]
[1]	The adjustments included in these financial statements for the nine months ended December 31, 2013 primarily related to a correction to revenue that was previously recorded as an out-of-period adjustment and is now being reported in the correct period, capitalization of property, plant and equipment which was previously incorrectly expensed, pension obligation, other misstatements, and the tax impact of these adjustments.
[2]	The adjustments included in these financial statements for the three and nine months ended December 31, 2013 primarily related to a correction to revenue that was previously recorded as an out-of-period adjustment and is now being reported in the correct period, capitalization of property, plant and equipment which was previously incorrectly expensed, pension obligation, other misstatements, and the tax impact of these adjustments.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies- Additional Information (Details)	9 Months Ended
	Dec. 31, 2014
Fiscal Years
Interim quarter periods	91 days

Net_Income_Per_Share_Computati

Net Income Per Share- Computation of Basic and Diluted Net Income per Share (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Abstract]
Net income	$62,784	$47,884	$118,550	$63,686
Shares used in net income per share computation:
Weighted average shares outstanding - basic	163,533,000	160,871,000	163,261,000	160,051,000
Effect of potentially dilutive equivalent shares	2,788,000	2,517,000	2,815,000	1,458,000
Weighted average shares outstanding - diluted	166,321,000	163,388,000	166,076,000	161,509,000
Net income per share:
Basic (in dollars per share)	$0.38	$0.30	$0.73	$0.40
Diluted (in dollars per share)	$0.38	$0.29	$0.71	$0.39
Anti-dilutive equivalents shares excluded	8,079,134	11,080,000	8,079,134	15,874,000

Employee_Benefit_Plans_Shareba

Employee Benefit Plans- Share-based Compensation Expenses and Related Tax Benefits (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Share-based compensation expense and related tax benefit
Total share-based compensation expense	$7,047	$8,913	$20,046	$17,412
Income tax benefit	-1,623	-168	-4,720	-2,343
Total share-based compensation expense, net of income tax	5,424	8,745	15,326	15,069
Cost of goods sold
Share-based compensation expense and related tax benefit
Total share-based compensation expense	560	672	1,724	1,843
Marketing and selling
Share-based compensation expense and related tax benefit
Total share-based compensation expense	2,786	3,057	6,995	5,980
Research and development
Share-based compensation expense and related tax benefit
Total share-based compensation expense	1,066	1,906	2,462	3,840
General and administrative
Share-based compensation expense and related tax benefit
Total share-based compensation expense	$2,635	$3,278	$8,865	$5,749

Employee_Benefit_Plans_Additio

Employee Benefit Plans- Additional Information (Details) (USD $)	3 Months Ended		9 Months Ended		1 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Jul. 31, 2014
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expenses capitalized as inventory	$600,000	$500,000
Defined Contribution Plans
Expense for defined contribution plans	1,600,000	1,400,000	4,300,000	4,700,000
Net periodic benefit cost
Service costs	1,800,000	2,400,000	5,700,000	7,600,000
ESPP
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Amount of one-time bonus payment to each participant of the offering expressed as percentage of amount of shares that would have been purchased pursuant to the ESPP					15.00%
Additional compensation cost					$0

Income_Taxes_Additional_Inform

Income Taxes- Additional Information (Details) (USD $)	3 Months Ended		9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Jun. 30, 2014	Mar. 31, 2014
Income Tax Disclosure [Abstract]
Provision for (benefit from) income taxes	($878,000)	$4,807,000	$7,718,000	$7,064,000
Effective income tax rates (as a percent)	-1.40%	9.10%	6.10%	10.00%
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	9,000,000	10,000,000	11,100,000	12,000,000
Tax benefit resulting from the extension of Research and Develpment tax credit	800,000		800,000
Unrecognized tax benefits	85,100,000		85,100,000			91,000,000
Unrecognized tax benefits that would impact effective tax rate	83,900,000		83,900,000			86,100,000
Income taxes payable	79,417,000		79,417,000			93,126,000
Current income taxes payable	100,000		100,000			300,000
Reclassification of unrecognized tax benefits previously presented as non-current income taxes payable as a reduction to non-current deferred tax assets for tax credit carryforwards					9,800,000
Accrued interest and penalties related to uncertain tax positions	5,200,000		5,200,000			5,600,000
Expected decrease in uncertain tax positions	$16,000,000		$16,000,000

Balance_Sheet_Components_Compo

Balance Sheet Components- Components of Certain Balance Sheet Asset Amounts (Details) (USD $)	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Accounts receivable, net:
Accounts receivable	$537,240	$338,194
Allowance for doubtful accounts	-1,576	-1,712
Allowance for sales returns	-17,706	-19,472
Allowance for cooperative marketing arrangements	-36,764	-24,135
Allowance for customer incentive programs	-74,096	-41,400
Allowance for pricing programs	-100,232	-69,446
Accounts receivable, net	306,866	182,029
Inventories:
Raw materials	31,006	24,031
Work-in-process	29	42
Finished goods	214,705	198,329
Inventory, net	245,740	222,402
Other current assets:
Income tax and value-added tax receivables	21,729	18,252
Deferred tax assets	26,863	27,013
Prepaid expenses and other assets	17,021	13,892
Other current assets, total	65,613	59,157
Balance sheet components
Property, plant and equipment, gross	332,046	326,661
Property, plant and equipment, net:
Less accumulated depreciation	-268,828	-256,424
Property, plant and equipment before non-depreciable items	63,218	70,237
Property, plant and equipment, net	90,777	88,391
Other assets:
Deferred tax assets	43,778	52,883
Trading investments	17,483	16,611
Other assets	5,744	4,966
Other assets, total	67,005	74,460
Plant, buildings and improvements
Balance sheet components
Property, plant and equipment, gross	70,174	69,897
Equipment
Balance sheet components
Property, plant and equipment, gross	138,979	134,975
Computer equipment
Balance sheet components
Property, plant and equipment, gross	41,106	40,610
Software
Balance sheet components
Property, plant and equipment, gross	81,787	81,179
Construction-in-process
Balance sheet components
Property, plant and equipment, gross	24,832	15,362
Land
Balance sheet components
Property, plant and equipment, gross	$2,727	$2,792

Balance_Sheet_Components_Detai

Balance Sheet Components (Details) (USD $)	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Accrued and other current liabilities:
Accrued personnel expenses	$54,803	$55,165
Accrued marketing expenses	13,259	12,844
Indirect customer incentive programs	35,868	31,737
Accrued restructuring	1,772	2,121
Deferred revenue	22,862	22,529
Accrued freight and duty	11,723	6,276
Value-added taxes payable	9,825	9,354
Accrued royalties	3,387	2,653
Warranty accrual	12,799	13,905
Employee benefit plan obligation	1,498	1,100
Income taxes payable	8,894	7,701
Other current liabilities	47,960	46,587
Accrued and other current liabilities	224,650	211,972
Non-current liabilities:
Warranty accrual	9,293	10,475
Obligation for deferred compensation	17,483	16,611
Long term restructuring	4,391	5,440
Employment benefit plan obligation	34,917	37,899
Deferred rent	14,200	15,555
Deferred tax liability	1,964	2,304
Long term deferred revenue	9,692	9,350
Other non-current liabilities	1,523	1,715
Non-current liabilities	$93,463	$99,349

Fair_Value_Measurements_Financ

Fair Value Measurements- Financial Assets and Liabilities, Classified by Level (Details) (USD $)	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading investments for deferred compensation plan:	$17,483	$16,611
Foreign exchange derivative assets	0
Foreign exchange derivative liabilities	0
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	274,552	200,641
Trading investments for deferred compensation plan:	17,483	16,611
Foreign exchange derivative assets		0
Foreign exchange derivative liabilities		0
Level 1 | Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading investments for deferred compensation plan:	2,981	3,139
Level 1 | Mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading investments for deferred compensation plan:	14,502	13,472
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents		0
Trading investments for deferred compensation plan:		0
Foreign exchange derivative assets	697	155
Foreign exchange derivative liabilities	$38	$701

Fair_Value_Measurements_Fair_V

Fair Value Measurements- Fair Values of Company Derivative Instruments (Details) (USD $)	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Derivative Financial Instruments
Asset Derivatives, Fair Value	$697	$155
Liability Derivatives, Fair Value	38	701
Designated as hedging instruments: | Cash Flow Hedges
Derivative Financial Instruments
Asset Derivatives, Fair Value	693	4
Liability Derivatives, Fair Value		243
Not designated as hedging instruments: | Foreign exchange contracts
Derivative Financial Instruments
Asset Derivatives, Fair Value	4	151
Liability Derivatives, Fair Value	$38	$458

Fair_Value_Measurements_Gains_

Fair Value Measurements- Gains and Losses on Derivative Instruments (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Amounts of gains and losses on the derivative instruments
Net Amount of Gain (Loss) Deferred as a Component of Accumulated Other Comprehensive Income	($739)	$144	$3,198	($1,958)
Cost of goods sold
Amounts of gains and losses on the derivative instruments
Amount of Loss (Gain) Reclassified from Accumulated Other Comprehensive Income to Costs of Goods Sold	-2,025	1,342	-1,840	1,526
Other Income (Expense), Net
Amounts of gains and losses on the derivative instruments
Amount of Gain (Loss) Immediately Recognized in Other Income (Expense), Net	1,621	907	1,888	1,861
Designated as hedging instruments: | Cash Flow Hedges
Amounts of gains and losses on the derivative instruments
Net Amount of Gain (Loss) Deferred as a Component of Accumulated Other Comprehensive Income	-739	144	3,198	-1,958
Designated as hedging instruments: | Cash Flow Hedges | Cost of goods sold
Amounts of gains and losses on the derivative instruments
Amount of Loss (Gain) Reclassified from Accumulated Other Comprehensive Income to Costs of Goods Sold	-2,025	1,342	-1,840	1,526
Designated as hedging instruments: | Cash Flow Hedges | Other Income (Expense), Net
Amounts of gains and losses on the derivative instruments
Amount of Gain (Loss) Immediately Recognized in Other Income (Expense), Net	36	8	-20	54
Not designated as hedging instruments: | Other Income (Expense), Net | Foreign exchange contracts
Amounts of gains and losses on the derivative instruments
Amount of Gain (Loss) Immediately Recognized in Other Income (Expense), Net	$1,585	$899	$1,908	$1,807

Fair_Value_Measurements_Additi

Fair Value Measurements- Additional Information (Details)	9 Months Ended				9 Months Ended
	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2014	Mar. 31, 2014	Mar. 31, 2014
	USD ($)	USD ($)	Foreign exchange forward contract	Foreign exchange forward contract	Cash Flow Hedges	Cash Flow Hedges	Cash Flow Hedges	Cash Flow Hedges
			Not designated as hedging instruments:	Not designated as hedging instruments:	Foreign exchange forward contract	Foreign exchange forward contract	Foreign exchange forward contract	Foreign exchange forward contract
			USD ($)	USD ($)	Designated as hedging instruments:	Designated as hedging instruments:	Designated as hedging instruments:	Designated as hedging instruments:
					USD ($)	EUR (€)	USD ($)	EUR (€)
					entity	entity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Entity's normal operating cycle period	1 year
Trading investments for deferred compensation plan:	$17,483,000	$16,611,000
Number of entity with euro functional currency that purchases in U.S. dollars					1	1
Average maturity					4 months	4 months
Notional amounts of foreign exchange forward contracts outstanding			$42,700,000	$53,600,000	$41,400,000	€ 33,900,000	$51,800,000	€ 37,600,000

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets- Summary of Activity In Goodwill Balance (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Mar. 31, 2014
Goodwill
Balance at the beginning of the period	$345,010
Foreign currency impact	-1,573
Balance at the end of the period	343,437
Peripherals
Goodwill
Balance at the beginning of the period		219,415
Balance at the end of the period	219,415	219,415
Video conferencing
Goodwill
Balance at the beginning of the period	125,595
Foreign currency impact	-1,573
Balance at the end of the period	$124,022

Goodwill_and_Other_Intangible_3

Goodwill and Other Intangible Assets- Additional Information (Details) (USD $)	3 Months Ended				9 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2014		Dec. 31, 2013
Goodwill Impairment Test
Operating income	$64,698,000		$52,631,000		$129,530,000		$70,251,000
Operating income (loss) before other charges	74,011,000		66,016,000		157,200,000		102,653,000
Amortization expense
Amortization of other intangible assets	2,266,000		4,472,000		7,624,000		14,990,000
Expected amortization expense
Future amortization expense for remaining three months of fiscal year, 2015	700,000				700,000
Future amortization expense for fiscal year, 2016	1,800,000				1,800,000
Future amortization expense for fiscal year, 2017	200,000				200,000
Peripherals
Goodwill Impairment Test
Market capitalization	2,300,000,000		2,200,000,000		2,300,000,000		2,200,000,000
Operating income (loss) before other charges	76,114,000	[1]	64,806,000	[1]	160,268,000	[1]	117,784,000	[1]
Video conferencing
Goodwill Impairment Test
Operating income (loss) before other charges	($2,103,000)	[1]	$1,210,000	[1]	($3,068,000)	[1]	($15,131,000)	[1]
Percentage which fair value exceeds carrying value	38.00%
CAGR assumption through fiscal year 2022					6.90%
CAGR assumption in fiscal year 2022					4.00%
CAGR assumption, hypothetical decrease					2.30%
Discount rate assumption					14.00%
Discount rate assumption, hypothetical increase					17.00%
Terminal growth rate assumption					4.00%
Terminal growth rate, hypothetical decrease					-2.20%
[1]	Peripherals operating results include $0.1 million restructuring credit and a $0.8 million restructuring charge during the three months ended December 31, 2014 and 2013, respectively. Peripherals operating results include $0.1 million restructuring credit and $2.7 million restructuring charges during the nine months ended December 31, 2014 and 2013, respectively. Video conferencing operating results include $0.1 million restructuring credit and $5.9 million of restructuring charges during the nine months ended December 31, 2014 and 2013.

Financing_Arrangements_Additio

Financing Arrangements- Additional Information (Details) (Unsecured bank lines of credit, USD $)	Dec. 31, 2014
Unsecured bank lines of credit
Financing Arrangements
Maximum borrowing capacity	$38,700,000
Outstanding borrowings	$7,500,000

Commitments_and_Contingencies_1

Commitments and Contingencies- Changes in Warranty Liability (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Changes in the warranty liability:
Beginning balance	$22,204	$23,021	$24,380	$21,442
Provision	2,381	4,343	6,607	11,532
Settlements	-2,493	-3,842	-8,895	-11,779
Adjustment				2,327	[1]
Ending balance	$22,092	$23,522	$22,092	$23,522
[1]	During the nine month period December 31, 2013, the warranty liability allocated to the Company’s - Remotes product category was reclassified from liabilities held for sale.

Commitments_and_Contingencies_2

Commitments and Contingencies- Additional Information (Details) (USD $)	9 Months Ended
	Dec. 31, 2014
Indemnification agreement
Other Commitments [Line Items]
Amount accrued for indemnification provisions	$0
Parent guarantee for purchase obligation of third party contract manufacturer
Other Commitments [Line Items]
Maximum amount of the guarantees	3,500,000
Guarantees outstanding	$1,400,000
Minimum
Other Commitments [Line Items]
Warranty period	1 year
Maximum
Other Commitments [Line Items]
Warranty period	5 years

Shareholders_Equity_Additional

Shareholders' Equity- Additional Information (Details)	1 Months Ended	9 Months Ended
	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Stockholders' Equity Note [Abstract]
Shares Approved, Shares	250,000,000
Period to complete share repurchase program	3 years
Share Repurchases, Shares		0	0

Shareholders_Equity_Components

Shareholders' Equity- Components of Accumulated Other Comprehensive Income (Loss) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss)
Balance at the beginning of the period			($85,802)
Other comprehensive income (loss)	-4,509	760	-3,054	3,240
Balance at the end of the period	-88,856		-88,856
Cumulative Translation Adjustment
Accumulated Other Comprehensive Income (Loss)
Balance at the beginning of the period			-70,999
Other comprehensive income (loss)			-8,051
Balance at the end of the period	-79,050		-79,050
Defined Benefit Plan
Accumulated Other Comprehensive Income (Loss)
Balance at the beginning of the period			-14,288
Other comprehensive income (loss)			1,799
Balance at the end of the period	-12,489		-12,489
Defined Benefit Plan, tax amount	192		192		192
Deferred Hedging Gains (Losses)
Accumulated Other Comprehensive Income (Loss)
Balance at the beginning of the period			-515
Other comprehensive income (loss)			3,198
Balance at the end of the period	$2,683		$2,683

Segment_Information_Net_Sales_

Segment Information- Net Sales and Operating Income by Operating Segments (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2014		Dec. 31, 2013
Net sales by product categories, excluding intercompany transactions
Total net sales	$634,204		$628,719	[1]	$1,646,718		$1,638,392	[1]
Operating income (loss) before other charges	74,011		66,016		157,200		102,653
Other income (expense):
Share-based compensation	-7,047		-8,913		-20,046		-17,412
Amortization of intangibles	-2,266		-4,472		-7,624		-14,990
Interest income (expense), net	224		-1,022		837		-862
Other income (expense), net	-3,016		1,082		-4,099		1,361
Income before income taxes	61,906		52,691		126,268		70,750
Peripherals
Net sales by product categories, excluding intercompany transactions
Total net sales	604,322		598,763	[1]	1,562,624		1,548,666	[1]
Operating income (loss) before other charges	76,114	[2]	64,806	[2]	160,268	[2]	117,784	[2]
Video conferencing
Net sales by product categories, excluding intercompany transactions
Total net sales	29,882		29,956	[1]	84,094		89,726	[1]
Operating income (loss) before other charges	($2,103)	[2]	$1,210	[2]	($3,068)	[2]	($15,131)	[2]
[1]	Certain products within the retail product families presented in prior years have been reclassified to conform to the current year presentation.
[2]	Peripherals operating results include $0.1 million restructuring credit and a $0.8 million restructuring charge during the three months ended December 31, 2014 and 2013, respectively. Peripherals operating results include $0.1 million restructuring credit and $2.7 million restructuring charges during the nine months ended December 31, 2014 and 2013, respectively. Video conferencing operating results include $0.1 million restructuring credit and $5.9 million of restructuring charges during the nine months ended December 31, 2014 and 2013.

Segment_Information_Net_Sales_1

Segment Information- Net Sales by Product Family- Excluding Intercompany Transactions (Details) (USD $)	3 Months Ended			9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013		Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Total net sales	$634,204	$628,719	[1]	$1,646,718	$1,638,392	[1]
Peripherals
Segment Reporting Information [Line Items]
Total net sales	604,322	598,763	[1]	1,562,624	1,548,666	[1]
Video conferencing
Segment Reporting Information [Line Items]
Total net sales	29,882	29,956	[1]	84,094	89,726	[1]
Growth: | Peripherals
Segment Reporting Information [Line Items]
Total net sales	187,552	169,380	[1]	419,174	359,940	[1]
Profit Maximization: | Peripherals
Segment Reporting Information [Line Items]
Total net sales	386,341	383,663	[1]	1,049,868	1,053,791	[1]
Non-Strategic: | Peripherals
Segment Reporting Information [Line Items]
Total net sales	132	11,178	[1]	2,259	28,354	[1]
PC Gaming | Growth: | Peripherals
Segment Reporting Information [Line Items]
Total net sales	70,188	58,173	[1]	164,570	141,645	[1]
Tablet & Other Accessories | Growth: | Peripherals
Segment Reporting Information [Line Items]
Total net sales	55,100	77,009	[1]	114,973	150,263	[1]
Mobile Speakers | Growth: | Peripherals
Segment Reporting Information [Line Items]
Total net sales	62,264	34,198	[1]	139,631	68,032	[1]
Pointing Devices | Profit Maximization: | Peripherals
Segment Reporting Information [Line Items]
Total net sales	141,789	141,757	[1]	382,524	387,064	[1]
PC Keyboards & Desktops | Profit Maximization: | Peripherals
Segment Reporting Information [Line Items]
Total net sales	114,058	108,682	[1]	325,299	311,955	[1]
Audio-PC &Wearables | Profit Maximization: | Peripherals
Segment Reporting Information [Line Items]
Total net sales	58,696	69,021	[1]	166,999	195,082	[1]
Video | Profit Maximization: | Peripherals
Segment Reporting Information [Line Items]
Total net sales	46,682	38,154	[1]	118,822	105,740	[1]
Remotes | Profit Maximization: | Peripherals
Segment Reporting Information [Line Items]
Total net sales	25,116	26,049	[1]	56,224	53,950	[1]
Other | Peripherals
Segment Reporting Information [Line Items]
Total net sales	132	11,178	[1]	2,259	28,354	[1]
Retail | Peripherals
Segment Reporting Information [Line Items]
Total net sales	574,025	564,221	[1]	1,471,301	1,442,085	[1]
OEM | Peripherals
Segment Reporting Information [Line Items]
Total net sales	$30,297	$34,542	[1]	$91,323	$106,581	[1]
[1]	Certain products within the retail product families presented in prior years have been reclassified to conform to the current year presentation.

Segment_Information_Net_Sales_2

Segment Information- Net Sales and Long-Lived Assets by Geographic Region (Details) (USD $)	3 Months Ended			9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013		Dec. 31, 2014	Dec. 31, 2013		Mar. 31, 2014
Net sales to unaffiliated customers and long-lived assets by geographic region
Total net sales	$634,204	$628,719	[1]	$1,646,718	$1,638,392	[1]
Total long-lived assets	90,777			90,777			88,391
Americas
Net sales to unaffiliated customers and long-lived assets by geographic region
Total net sales	280,652	258,682		718,274	662,122
Total long-lived assets	47,510			47,510			45,166
EMEA
Net sales to unaffiliated customers and long-lived assets by geographic region
Total net sales	221,043	238,972		564,314	596,719
Total long-lived assets	3,742			3,742			5,154
Asia Pacific
Net sales to unaffiliated customers and long-lived assets by geographic region
Total net sales	132,509	131,065		364,130	379,551
Total long-lived assets	$39,525			$39,525			$38,071
[1]	Certain products within the retail product families presented in prior years have been reclassified to conform to the current year presentation.

Segment_Information_Additional

Segment Information- Additional Information (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Mar. 31, 2014
	customer	customer	customer	customer
			segment
Segment Reporting Information [Line Items]
Number of reporting segments			2
Restructuring charges (credit)	($146)	$822	($146)	$8,621
Number of customers representing more than 10% sales revenue	1	1	1	1
Total long-lived assets	90,777		90,777		88,391
Peripherals
Segment Reporting Information [Line Items]
Restructuring charges (credit)	100	800	100	2,700
Video conferencing
Segment Reporting Information [Line Items]
Restructuring charges (credit)		100		5,900
United States
Segment Reporting Information [Line Items]
Total long-lived assets	47,300		47,300		44,900
China
Segment Reporting Information [Line Items]
Total long-lived assets	34,500		34,500		31,900
Switzerland
Segment Reporting Information [Line Items]
Total long-lived assets	$1,400		$1,400		$1,600
Consolidated net sales | Geographic Concentration | United States
Segment Reporting Information [Line Items]
Percentage of benchmark derived from specified source	36.00%	34.00%	36.00%	35.00%
Consolidated net sales | Geographic Concentration | Switzerland
Segment Reporting Information [Line Items]
Percentage of benchmark derived from specified source	2.00%	2.00%	2.00%	1.00%
Consolidated net sales | Customer Concentration | Peripherals
Segment Reporting Information [Line Items]
Percentage of benchmark derived from specified source			15.00%	14.00%
Single customer group | Consolidated net sales | Customer Concentration | Peripherals
Segment Reporting Information [Line Items]
Percentage of benchmark derived from specified source	14.00%	15.00%