QLogic (QLGC) 10-Q 31 Jul 14 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Jun. 29, 2014	Jul. 25, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	29-Jun-14	'
Document Fiscal Year Focus	'2015	'
Document Fiscal Period Focus	'Q1	'
Trading Symbol	'QLGC	'
Entity Registrant Name	'QLOGIC CORP	'
Entity Central Index Key	'0000918386	'
Current Fiscal Year End Date	'--03-29	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	87,820,000

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (Unaudited) (USD $)	Jun. 29, 2014	Mar. 30, 2014
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$60,882	$91,258
Marketable securities	189,532	186,783
Accounts receivable, less allowance for doubtful accounts of $1,176 and $1,186 as of June 29, 2014 and March 30, 2014, respectively	84,103	65,213
Inventories	25,715	18,036
Deferred tax assets	14,681	15,080
Other current assets	19,870	16,590
Total current assets	394,783	392,960
Property and equipment, net	86,304	84,912
Goodwill	193,294	194,107
Purchased intangible assets, net	65,400	69,903
Deferred tax assets	29,091	32,827
Other assets	22,796	23,554
Total assets	791,668	798,263
Current liabilities:	'	'
Accounts payable	31,261	30,657
Accrued compensation	19,721	26,956
Accrued taxes	1,530	981
Deferred revenue	4,040	3,954
Other current liabilities	8,502	16,123
Total current liabilities	65,054	78,671
Accrued taxes	13,871	17,095
Other liabilities	9,315	9,071
Total liabilities	88,240	104,837
Stockholders' equity:	'	'
Preferred stock, $0.001 par value; 1,000,000 shares authorized; no shares issued and outstanding	'	'
Common stock, $0.001 par value; 500,000,000 shares authorized; 214,426,000 and 213,786,000 shares issued as of June 29, 2014 and March 30, 2014, respectively	214	214
Additional paid-in capital	961,690	958,008
Retained earnings	1,678,071	1,672,071
Accumulated other comprehensive income	755	435
Treasury stock, at cost: 126,616,000 shares as of June 29, 2014 and March 30, 2014	-1,937,302	-1,937,302
Total stockholders' equity	703,428	693,426
Total liabilities and stockholders' equity	$791,668	$798,263

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Jun. 29, 2014	Mar. 30, 2014
In Thousands, except Share data, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Allowance for doubtful accounts	$1,176	$1,186
Preferred stock, par value	$0.00	$0.00
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	214,426,000	213,786,000
Treasury stock, shares	126,616,000	126,616,000

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 29, 2014	Jun. 30, 2013
Income Statement [Abstract]	'	'
Net revenues	$119,449	$113,116
Cost of revenues	48,754	36,619
Gross profit	70,695	76,497
Operating expenses:	'	'
Engineering and development	37,821	40,387
Sales and marketing	16,034	19,413
General and administrative	8,900	7,739
Special charges	2,544	12,033
Total operating expenses	65,299	79,572
Operating income (loss)	5,396	-3,075
Interest and other income, net	142	773
Income (loss) before income taxes	5,538	-2,302
Income tax expense (benefit)	-462	748
Net income (loss)	$6,000	($3,050)
Net income (loss) per share:	'	'
Basic	$0.07	($0.03)
Diluted	$0.07	($0.03)
Number of shares used in per share calculations:	'	'
Basic	87,395	89,146
Diluted	88,253	89,146

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Jun. 29, 2014	Jun. 30, 2013
Statement Of Income And Comprehensive Income [Abstract]	'	'
Net income (loss)	$6,000	($3,050)
Changes in fair value of marketable securities:	'	'
Changes in unrealized gains	199	-1,921
Net realized losses (gains) reclassified into earnings	63	-394
Total changes in fair value of marketable securities	262	-2,315
Foreign currency translation adjustments	58	-294
Total other comprehensive income (loss)	320	-2,609
Comprehensive income (loss)	$6,320	($5,659)

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Jun. 29, 2014	Jun. 30, 2013
Cash flows from operating activities:	'	'
Net income (loss)	$6,000	($3,050)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:	'	'
Depreciation and amortization	12,180	7,806
Stock-based compensation	5,540	8,171
Deferred income taxes	4,076	5,403
Asset impairments	1,011	2,429
Other non-cash items	581	345
Changes in operating assets and liabilities:	'	'
Accounts receivable	-18,880	-3,169
Inventories	-7,679	3,052
Other assets	77	-210
Accounts payable	416	-289
Accrued compensation	-7,235	-5,374
Accrued taxes, net	-5,418	-5,366
Other liabilities	-7,291	6,843
Net cash provided by (used in) operating activities	-16,622	16,591
Cash flows from investing activities:	'	'
Purchases of available-for-sale securities	-51,759	-89,318
Proceeds from sales and maturities of available-for-sale securities	48,932	108,609
Purchases of property and equipment	-8,989	-10,111
Net cash provided by (used in) investing activities	-11,816	9,180
Cash flows from financing activities:	'	'
Proceeds from issuance of common stock under stock-based awards	1,440	1,963
Minimum tax withholding paid on behalf of employees for restricted stock units	-3,298	-4,280
Purchases of treasury stock	'	-24,428
Other financing activities	-80	-6
Net cash used in financing activities	-1,938	-26,751
Net decrease in cash and cash equivalents	-30,376	-980
Cash and cash equivalents at beginning of period	91,258	95,532
Cash and cash equivalents at end of period	$60,882	$94,552

Basis_of_Presentation

Basis of Presentation	3 Months Ended
	Jun. 29, 2014
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Note 1. Basis of Presentation
	In the opinion of management of QLogic Corporation (QLogic or the Company), the accompanying unaudited condensed consolidated financial statements contain all normal recurring accruals and adjustments necessary to present fairly the Company’s consolidated financial position, results of operations and cash flows. The accompanying condensed consolidated financial statements should be read in conjunction with the consolidated financial statements included in the Company’s Annual Report on Form 10-K for the fiscal year ended March 30, 2014. The results of operations for the three months ended June 29, 2014 are not necessarily indicative of the results that may be expected for the entire fiscal year. The preparation of financial statements in accordance with U.S. generally accepted accounting principles requires management to make estimates that affect the amounts reported in the Company’s consolidated financial statements and accompanying notes. The Company evaluates its estimates on an ongoing basis using historical experience and other factors, including the current economic environment. Among the significant estimates affecting the consolidated financial statements are those related to revenue recognition, stock-based compensation, income taxes, marketable securities, inventories, goodwill and long-lived assets. The actual results experienced by the Company could differ materially from management’s estimates.
	Recently Adopted Accounting Standards
	In July 2013, the Financial Accounting Standards Board issued an accounting standard update that requires certain unrecognized tax benefits to be presented as a reduction to deferred tax assets rather than as liabilities when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The Company adopted this standard in the first quarter of fiscal 2015 on a prospective basis and its adoption did not have a material effect on its condensed consolidated balance sheet.

Business_Acquisition

Business Acquisition	3 Months Ended
	Jun. 29, 2014
Business Combinations [Abstract]	'
Business Acquisition	'
	Note 2. Business Acquisition
	Broadcom Corporation
	In March 2014, the Company acquired certain 10/40/100Gb Ethernet controller-related assets from Broadcom Corporation (Broadcom) primarily relating to the NetXtreme® II Ethernet controller family and licensed certain related intellectual property under non-exclusive licenses for total cash consideration of $147.8 million and the assumption of certain liabilities. The transfer of certain property and equipment in a foreign jurisdiction was subject to local compliance requirements and was completed in July 2014. The Company’s purchase price allocation will be adjusted for this transfer in the second quarter of fiscal 2015.
	The Company preliminarily estimated the fair value of the assets acquired and liabilities assumed and allocated a portion of the total purchase consideration to tangible and identifiable intangible assets acquired and liabilities assumed based on their respective estimated fair values at the acquisition date. During the three months ended June 29, 2014, the Company completed the identification and valuation of certain property and equipment acquired and recorded an increase in property and equipment of $0.8 million with a corresponding decrease in goodwill. The excess of the total purchase consideration over the aggregate estimated fair values was recorded as goodwill. The goodwill associated with this acquisition is expected to be tax deductible. The following table summarizes the preliminary allocation of the purchase price to the fair value of the assets acquired and liabilities assumed:
		(In thousands)
	Inventories	$	2,880
	Other current assets		307
	Property and equipment		3,268
	Goodwill		82,318
	Purchased intangible asset		60,100
	Accrued compensation		(987	)
	Other current liabilities		(129	)
		$	147,757
	Included in the preliminary purchase price allocation is a provisional amount related to a purchased intangible asset consisting of developed technology, which has an estimated useful life of five years. The preliminary fair value of this purchased intangible asset was based on estimates and assumptions made by management at the time of the acquisition. The Company is in the process of completing the identification and valuation of the intangible assets and certain property and equipment acquired, which may result in adjustments to goodwill and the provisional amounts recorded for the purchased intangible asset and property and equipment, as well as recording the fair value of additional identifiable intangible assets. These adjustments may also result in changes to related amortization expense. The Company expects to finalize the purchase price allocation during fiscal 2015.

Marketable_Securities

Marketable Securities	3 Months Ended
	Jun. 29, 2014
Investments Debt And Equity Securities [Abstract]	'
Marketable Securities	'
	Note 3. Marketable Securities
	The Company’s portfolio of available-for-sale marketable securities consists of the following:
		Amortized		Gross			Gross			Estimated
		Cost		Unrealized			Unrealized			Fair Value
				Gains			Losses
		(In thousands)
	June 29, 2014
	U.S. government and agency securities	$	47,919	$	36		$	(16	)	$	47,939
	Corporate debt obligations		77,041		241			(31	)		77,251
	Mortgage-backed securities		32,029		228			(98	)		32,159
	Municipal bonds		23,402		164			(5	)		23,561
	Other debt securities		8,619		8			(5	)		8,622
		$	189,010	$	677		$	(155	)	$	189,532
	March 30, 2014
	U.S. government and agency securities	$	49,237	$	16		$	(55	)	$	49,198
	Corporate debt obligations		74,386		200			(72	)		74,514
	Mortgage-backed securities		32,778		191			(187	)		32,782
	Municipal bonds		24,989		133			(9	)		25,113
	Other debt securities		5,178		3			(5	)		5,176
		$	186,568	$	543		$	(328	)	$	186,783
	The amortized cost and estimated fair value of debt securities as of June 29, 2014, by contractual maturity, are presented below. Expected maturities will differ from contractual maturities because the issuers of securities may have the right to repay obligations without prepayment penalties. Certain debt instruments, although possessing a contractual maturity greater than one year, are classified as short-term marketable securities based on their ability to be traded on active markets and availability for current operations.
		Amortized		Estimated
		Cost		Fair Value
		(In thousands)
	Due in one year or less	$	15,480	$	15,509
	Due after one year through three years		127,021		127,380
	Due after three years through five years		24,378		24,360
	Due after five years		22,131		22,283
		$	189,010	$	189,532
	The following table presents the Company’s marketable securities with unrealized losses by investment category and length of time that individual securities have been in a continuous unrealized loss position as of June 29, 2014 and March 30, 2014.
		Less Than 12 Months					12 Months or Greater						Total
	Description of Securities	Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
		Value		Losses			Value			Losses			Value		Losses
		(In thousands)
	June 29, 2014
	U.S. government and agency securities	$	23,407	$	(14	)	$	679		$	(2	)	$	24,086	$	(16	)
	Corporate debt obligations		17,725		(28	)		464			(3	)		18,189		(31	)
	Mortgage-backed securities		2,990		(15	)		7,088			(83	)		10,078		(98	)
	Municipal bonds		2,481		(5	)		—			—			2,481		(5	)
	Other debt securities		4,102		(5	)		—			—			4,102		(5	)
		$	50,705	$	(67	)	$	8,231		$	(88	)	$	58,936	$	(155	)
	March 30, 2014
	U.S. government and agency securities	$	26,879	$	(55	)	$	—		$	—		$	26,879	$	(55	)
	Corporate debt obligations		19,906		(72	)		—			—			19,906		(72	)
	Mortgage-backed securities		11,261		(145	)		2,838			(42	)		14,099		(187	)
	Municipal bonds		3,322		(9	)		—			—			3,322		(9	)
	Other debt securities		2,955		(5	)		—			—			2,955		(5	)
		$	64,323	$	(286	)	$	2,838		$	(42	)	$	67,161	$	(328	)
	As of June 29, 2014 and March 30, 2014, the fair value of certain of the Company’s available-for-sale securities was less than their cost basis. Management reviewed various factors in determining whether to recognize an impairment charge related to these unrealized losses, including the current financial and credit market environment, the financial condition and near-term prospects of the issuer of the security, the magnitude of the unrealized loss compared to the cost of the investment, the length of time the investment had been in a loss position and the Company’s intent and ability to hold the investment for a period of time sufficient to allow for any anticipated recovery of market value. As of June 29, 2014 and March 30, 2014, the Company determined that the unrealized losses were temporary in nature and recorded them as a component of accumulated other comprehensive income.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	3 Months Ended
	Jun. 29, 2014
Fair Value Disclosures [Abstract]	'
Fair Value of Financial Instruments	'
	Note 4. Fair Value of Financial Instruments
	The Company’s financial instruments consist principally of cash and cash equivalents, marketable securities, accounts receivable and accounts payable. The carrying value of accounts receivable and accounts payable approximates fair value.
	A summary of the assets measured at fair value on a recurring basis as of June 29, 2014 and March 30, 2014 are as follows:
		Fair Value Measurements Using
		Level 1		Level 2		Total
		(In thousands)
	June 29, 2014
	Cash and cash equivalents	$	60,882	$	—	$	60,882
	Marketable securities:
	U.S. government and agency securities		47,939		—		47,939
	Corporate debt obligations		—		77,251		77,251
	Mortgage-backed securities		—		32,159		32,159
	Municipal bonds		—		23,561		23,561
	Other debt securities		—		8,622		8,622
			47,939		141,593		189,532
		$	108,821	$	141,593	$	250,414
	March 30, 2014
	Cash and cash equivalents	$	91,258	$	—	$	91,258
	Marketable securities:
	U.S. government and agency securities		49,198		—		49,198
	Corporate debt obligations		—		74,514		74,514
	Mortgage-backed securities		—		32,782		32,782
	Municipal bonds		—		25,113		25,113
	Other debt securities		—		5,176		5,176
			49,198		137,585		186,783
		$	140,456	$	137,585	$	278,041
	The Company’s investments classified within Level 2 were primarily valued based on valuations obtained from a third-party pricing service. To estimate fair value, the pricing service utilizes industry-standard valuation models, including both income and market-based approaches for which all significant inputs are observable either directly or indirectly. The Company obtained documentation from the pricing service as to the methodology and summary of inputs used for the various types of securities. The pricing service maximizes the use of relevant observable inputs and minimizes the use of unobservable inputs. These observable inputs include reported trades and broker/dealer quotes of the same or similar securities, issuer credit spreads, benchmark securities and other observable inputs. The Company compares valuation information from the pricing service with other pricing sources to validate the reasonableness of the valuations.

Inventories

Inventories	3 Months Ended
	Jun. 29, 2014
Inventory Disclosure [Abstract]	'
Inventories	'
	Note 5. Inventories
	Components of inventories are as follows:
		June 29,		March 30,
		2014		2014
		(In thousands)
	Raw materials	$	2,636	$	2,041
	Finished goods		23,079		15,995
		$	25,715	$	18,036

StockBased_Compensation

Stock-Based Compensation	3 Months Ended
	Jun. 29, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Stock-Based Compensation	'
	Note 6. Stock-Based Compensation
	During the three months ended June 29, 2014, the Company granted 1.7 million restricted stock units with a weighted average grant date fair value of $10.43 per share.
	A summary of stock-based compensation expense, by functional line item in the condensed consolidated statements of operations, is as follows:
		Three Months Ended
		June 29,		June 30,
		2014		2013
		(In thousands)
	Cost of revenues	$	355	$	584
	Engineering and development		2,971		4,351
	Sales and marketing		1,010		1,793
	General and administrative		1,204		1,443
		$	5,540	$	8,171

Special_Charges

Special Charges	3 Months Ended
	Jun. 29, 2014
Restructuring And Related Activities [Abstract]	'
Special Charges	'
	Note 7. Special Charges
	A summary of the special charges recorded during the three months ended June 29, 2014 and June 30, 2013, respectively, is as follows:
		Three Months Ended
		June 29,			June 30,
		2014			2013
		(In thousands)
	Exit costs	$	1,033		$	9,604
	Asset impairments		1,011			2,429
	Other charges		500			—
		$	2,544		$	12,033
	March 2014 Initiative
	In March 2014, the Company commenced a restructuring plan (March 2014 Initiative) primarily designed to consolidate its Ethernet product roadmap following the acquisition of the Ethernet controller-related assets from Broadcom. This restructuring plan primarily includes a workforce reduction and the consolidation and elimination of certain engineering activities. The Company substantially completed these restructuring activities during the first quarter of fiscal 2015.
	During the three months ended June 29, 2014, the Company recorded special charges of $1.7 million in connection with the March 2014 Initiative, consisting of $0.7 million of exit costs and $1.0 million of asset impairment charges related to abandoned property and equipment. The exit costs include severance and related costs associated with involuntarily terminated employees.
	Activity and liability balances for exit costs related to the March 2014 Initiative are as follows:
		Workforce			Contract			Total
		Reduction			Cancellation
					and Other
		(In thousands)
	Balance as of March 30, 2014	$	3,177		$	4,311		$	7,488
	Charged to costs and expenses		622			54			676
	Payments		(3,384	)		(4,225	)		(7,609	)
	Balance as of June 29, 2014	$	415		$	140		$	555
	June 2013 Initiative
	In June 2013, the Company commenced a restructuring plan (June 2013 Initiative) designed to enhance product focus and streamline business operations. The restructuring plan includes a workforce reduction and the consolidation and elimination of certain engineering activities. In connection with this plan, the Company ceased development of future ASICs for switch products.
	During the three months ended June 29, 2014, the Company recorded special charges of $0.4 million in connection with the June 2013 Initiative, consisting of exit costs associated with severance and related costs for involuntarily terminated employees. Certain employees that were notified of their termination are required to provide future services for varying periods. Severance costs related to these services are recognized ratably over the estimated requisite service period. The Company expects to incur between $1 million and $2 million of additional severance costs in connection with these employees over the requisite service period.
	Activity and liability balances for exit costs related to the June 2013 Initiative are as follows:
		Workforce			Facilities			Total
		Reduction			and Other
		(In thousands)
	Balance as of March 30, 2014	$	3,528		$	4,621		$	8,149
	Charged to costs and expenses		357			—			357
	Payments		(949	)		(306	)		(1,255	)
	Balance as of June 29, 2014	$	2,936		$	4,315		$	7,251
	The total unpaid exit costs related to both initiatives are expected to be paid over the terms of the related agreements through fiscal 2018. As of June 29, 2014, unpaid exit costs totaling $2.5 million and $5.3 million are included in other current liabilities and other liabilities, respectively.

Income_Taxes

Income Taxes	3 Months Ended
	Jun. 29, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Note 8. Income Taxes
	The Company’s provision (benefit) for income taxes was $(0.5) million and $0.7 million for the three months ended June 29, 2014 and June 30, 2013, respectively. The income tax benefit for the three months ended June 29, 2014 was primarily due to adjustments to previously recognized uncertain tax position liabilities as a result of additional information received during the quarter related to these tax positions and certain other discrete items. Income tax expense was also impacted by the effect of a discrete tax-related item associated with the difference between stock-based compensation expense and the deduction related to stock-based awards on income tax returns. The Company’s provision for income taxes is based on the estimated income for the year, the composition of the estimated income in different tax jurisdictions, and the tax effect, if any, in the applicable quarterly periods of newly enacted tax legislation, resolution of tax audits, changes in uncertain tax positions, and other discrete tax-related items. The allocation of taxable income to domestic and foreign tax jurisdictions impacts the effective tax rate, as the Company’s income tax rate in foreign jurisdictions is generally lower than its income tax rate in the United States.
	The Company’s federal consolidated income tax returns for fiscal years 2010, 2011 and 2012 are currently under examination by the Internal Revenue Service. Management does not believe that the results of this examination will have a material impact on the Company’s financial condition or results of operations.

Net_Income_Loss_Per_Share

Net Income (Loss) Per Share	3 Months Ended
	Jun. 29, 2014
Earnings Per Share [Abstract]	'
Net Income (Loss) Per Share	'
	Note 9. Net Income (Loss) Per Share
	The following table sets forth the computation of basic and diluted net income (loss) per share:
		Three Months Ended
		June 29,		June 30,
		2014		2013
		(In thousands, except
		per share amounts)
	Net income (loss)	$	6,000	$	(3,050	)
	Shares:
	Weighted-average shares outstanding — basic		87,395		89,146
	Dilutive potential common shares, using treasury stock method		858		—
	Weighted-average shares outstanding — diluted		88,253		89,146
	Net income (loss) per share:
	Basic	$	0.07	$	(0.03	)
	Diluted	$	0.07	$	(0.03	)
	Stock-based awards, including stock options and restricted stock units, representing 12.1 million and 18.5 million shares of common stock have been excluded from the diluted per share calculations for the three months ended June 29, 2014 and June 30, 2013, respectively. These stock-based awards have been excluded from the diluted per share calculations because their effect would have been antidilutive.

Basis_of_Presentation_Policies

Basis of Presentation (Policies)	3 Months Ended
	Jun. 29, 2014
Accounting Policies [Abstract]	'
Recently Adopted Accounting Standards	'
	Recently Adopted Accounting Standards
	In July 2013, the Financial Accounting Standards Board issued an accounting standard update that requires certain unrecognized tax benefits to be presented as a reduction to deferred tax assets rather than as liabilities when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The Company adopted this standard in the first quarter of fiscal 2015 on a prospective basis and its adoption did not have a material effect on its condensed consolidated balance sheet.

Business_Acquisition_Tables

Business Acquisition (Tables)	3 Months Ended
	Jun. 29, 2014
Business Combinations [Abstract]	'
Summary of Purchase Price Allocation	'
	The following table summarizes the preliminary allocation of the purchase price to the fair value of the assets acquired and liabilities assumed:
		(In thousands)
	Inventories	$	2,880
	Other current assets		307
	Property and equipment		3,268
	Goodwill		82,318
	Purchased intangible asset		60,100
	Accrued compensation		(987	)
	Other current liabilities		(129	)
		$	147,757

Marketable_Securities_Tables

Marketable Securities (Tables)	3 Months Ended
	Jun. 29, 2014
Investments Debt And Equity Securities [Abstract]	'
Schedule of Available-for-Sale Securities	'
	The Company’s portfolio of available-for-sale marketable securities consists of the following:
		Amortized		Gross			Gross			Estimated
		Cost		Unrealized			Unrealized			Fair Value
				Gains			Losses
		(In thousands)
	June 29, 2014
	U.S. government and agency securities	$	47,919	$	36		$	(16	)	$	47,939
	Corporate debt obligations		77,041		241			(31	)		77,251
	Mortgage-backed securities		32,029		228			(98	)		32,159
	Municipal bonds		23,402		164			(5	)		23,561
	Other debt securities		8,619		8			(5	)		8,622
		$	189,010	$	677		$	(155	)	$	189,532
	March 30, 2014
	U.S. government and agency securities	$	49,237	$	16		$	(55	)	$	49,198
	Corporate debt obligations		74,386		200			(72	)		74,514
	Mortgage-backed securities		32,778		191			(187	)		32,782
	Municipal bonds		24,989		133			(9	)		25,113
	Other debt securities		5,178		3			(5	)		5,176
		$	186,568	$	543		$	(328	)	$	186,783
Schedule of Amortized Cost and Estimated Fair Value of Debt Securities	'
	The amortized cost and estimated fair value of debt securities as of June 29, 2014, by contractual maturity, are presented below. Expected maturities will differ from contractual maturities because the issuers of securities may have the right to repay obligations without prepayment penalties. Certain debt instruments, although possessing a contractual maturity greater than one year, are classified as short-term marketable securities based on their ability to be traded on active markets and availability for current operations.
		Amortized		Estimated
		Cost		Fair Value
		(In thousands)
	Due in one year or less	$	15,480	$	15,509
	Due after one year through three years		127,021		127,380
	Due after three years through five years		24,378		24,360
	Due after five years		22,131		22,283
		$	189,010	$	189,532
Schedule of Unrealized Losses by Investment Category	'
	The following table presents the Company’s marketable securities with unrealized losses by investment category and length of time that individual securities have been in a continuous unrealized loss position as of June 29, 2014 and March 30, 2014.
		Less Than 12 Months					12 Months or Greater						Total
	Description of Securities	Fair		Unrealized			Fair			Unrealized			Fair		Unrealized
		Value		Losses			Value			Losses			Value		Losses
		(In thousands)
	June 29, 2014
	U.S. government and agency securities	$	23,407	$	(14	)	$	679		$	(2	)	$	24,086	$	(16	)
	Corporate debt obligations		17,725		(28	)		464			(3	)		18,189		(31	)
	Mortgage-backed securities		2,990		(15	)		7,088			(83	)		10,078		(98	)
	Municipal bonds		2,481		(5	)		—			—			2,481		(5	)
	Other debt securities		4,102		(5	)		—			—			4,102		(5	)
		$	50,705	$	(67	)	$	8,231		$	(88	)	$	58,936	$	(155	)
	March 30, 2014
	U.S. government and agency securities	$	26,879	$	(55	)	$	—		$	—		$	26,879	$	(55	)
	Corporate debt obligations		19,906		(72	)		—			—			19,906		(72	)
	Mortgage-backed securities		11,261		(145	)		2,838			(42	)		14,099		(187	)
	Municipal bonds		3,322		(9	)		—			—			3,322		(9	)
	Other debt securities		2,955		(5	)		—			—			2,955		(5	)
		$	64,323	$	(286	)	$	2,838		$	(42	)	$	67,161	$	(328	)

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments (Tables)	3 Months Ended
	Jun. 29, 2014
Fair Value Disclosures [Abstract]	'
Schedule of Assets Measured at Fair Value on a Recurring Basis	'
	A summary of the assets measured at fair value on a recurring basis as of June 29, 2014 and March 30, 2014 are as follows:
		Fair Value Measurements Using
		Level 1		Level 2		Total
		(In thousands)
	June 29, 2014
	Cash and cash equivalents	$	60,882	$	—	$	60,882
	Marketable securities:
	U.S. government and agency securities		47,939		—		47,939
	Corporate debt obligations		—		77,251		77,251
	Mortgage-backed securities		—		32,159		32,159
	Municipal bonds		—		23,561		23,561
	Other debt securities		—		8,622		8,622
			47,939		141,593		189,532
		$	108,821	$	141,593	$	250,414
	March 30, 2014
	Cash and cash equivalents	$	91,258	$	—	$	91,258
	Marketable securities:
	U.S. government and agency securities		49,198		—		49,198
	Corporate debt obligations		—		74,514		74,514
	Mortgage-backed securities		—		32,782		32,782
	Municipal bonds		—		25,113		25,113
	Other debt securities		—		5,176		5,176
			49,198		137,585		186,783
		$	140,456	$	137,585	$	278,041

Inventories_Tables

Inventories (Tables)	3 Months Ended
	Jun. 29, 2014
Inventory Disclosure [Abstract]	'
Components of Inventories	'
	Components of inventories are as follows:
		June 29,		March 30,
		2014		2014
		(In thousands)
	Raw materials	$	2,636	$	2,041
	Finished goods		23,079		15,995
		$	25,715	$	18,036

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	3 Months Ended
	Jun. 29, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Summary of Stock-Based Compensation Expense	'
	A summary of stock-based compensation expense, by functional line item in the condensed consolidated statements of operations, is as follows:
		Three Months Ended
		June 29,		June 30,
		2014		2013
		(In thousands)
	Cost of revenues	$	355	$	584
	Engineering and development		2,971		4,351
	Sales and marketing		1,010		1,793
	General and administrative		1,204		1,443
		$	5,540	$	8,171

Special_Charges_Tables

Special Charges (Tables)	3 Months Ended
	Jun. 29, 2014
Summary of Special Charges	'
	A summary of the special charges recorded during the three months ended June 29, 2014 and June 30, 2013, respectively, is as follows:
		Three Months Ended
		June 29,			June 30,
		2014			2013
		(In thousands)
	Exit costs	$	1,033		$	9,604
	Asset impairments		1,011			2,429
	Other charges		500			—
		$	2,544		$	12,033
March 2014 Initiative [Member]	'
Activity and Liability Balances for Exit Costs	'
	Activity and liability balances for exit costs related to the March 2014 Initiative are as follows:
		Workforce			Contract			Total
		Reduction			Cancellation
					and Other
		(In thousands)
	Balance as of March 30, 2014	$	3,177		$	4,311		$	7,488
	Charged to costs and expenses		622			54			676
	Payments		(3,384	)		(4,225	)		(7,609	)
	Balance as of June 29, 2014	$	415		$	140		$	555
June 2013 Initiative [Member]	'
Activity and Liability Balances for Exit Costs	'
	Activity and liability balances for exit costs related to the June 2013 Initiative are as follows:
		Workforce			Facilities			Total
		Reduction			and Other
		(In thousands)
	Balance as of March 30, 2014	$	3,528		$	4,621		$	8,149
	Charged to costs and expenses		357			—			357
	Payments		(949	)		(306	)		(1,255	)
	Balance as of June 29, 2014	$	2,936		$	4,315		$	7,251

Net_Income_Loss_Per_Share_Tabl

Net Income (Loss) Per Share (Tables)	3 Months Ended
	Jun. 29, 2014
Earnings Per Share [Abstract]	'
Computation of Basic and Diluted Net Income (Loss) Per Share	'
	The following table sets forth the computation of basic and diluted net income (loss) per share:
		Three Months Ended
		June 29,		June 30,
		2014		2013
		(In thousands, except
		per share amounts)
	Net income (loss)	$	6,000	$	(3,050	)
	Shares:
	Weighted-average shares outstanding — basic		87,395		89,146
	Dilutive potential common shares, using treasury stock method		858		—
	Weighted-average shares outstanding — diluted		88,253		89,146
	Net income (loss) per share:
	Basic	$	0.07	$	(0.03	)
	Diluted	$	0.07	$	(0.03	)

Business_Acquisition_Additiona

Business Acquisition - Additional Information (Detail) (Broadcom 10/40/100Gb Ethernet Business [Member], USD $)	1 Months Ended	3 Months Ended
In Millions, unless otherwise specified	Mar. 30, 2014	Jun. 29, 2014
Business Acquisition [Line Items]	'	'
Business acquisition, cash consideration	$147.80	'
Business combination adjustment to property and equipment	'	0.8
Business combination adjustment to goodwill	'	($0.80)
Developed Technology [Member]	'	'
Business Acquisition [Line Items]	'	'
Estimated useful life of purchased intangible assets	'5 years	'

Business_Acquisition_Summary_o

Business Acquisition - Summary of Purchase Price Allocation (Detail) (USD $)	Jun. 29, 2014	Mar. 30, 2014
In Thousands, unless otherwise specified
Business Acquisition [Line Items]	'	'
Goodwill	$193,294	$194,107
Broadcom 10/40/100Gb Ethernet Business [Member]	'	'
Business Acquisition [Line Items]	'	'
Inventories	'	2,880
Other current assets	'	307
Property and equipment	'	3,268
Goodwill	'	82,318
Purchased intangible asset	'	60,100
Accrued compensation	'	-987
Other current liabilities	'	-129
Total purchase price	'	$147,757

Marketable_Securities_Schedule

Marketable Securities - Schedule of Available-for-Sale Securities (Detail) (USD $)	Jun. 29, 2014	Mar. 30, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale securities, Amortized Cost	$189,010	$186,568
Available-for-sale securities, Gross Unrealized Gains	677	543
Available-for-sale securities, Gross Unrealized Losses	-155	-328
Available-for-sale securities, Estimated Fair Value	189,532	186,783
U.S. Government and Agency Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale securities, Amortized Cost	47,919	49,237
Available-for-sale securities, Gross Unrealized Gains	36	16
Available-for-sale securities, Gross Unrealized Losses	-16	-55
Available-for-sale securities, Estimated Fair Value	47,939	49,198
Corporate Debt Obligations [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale securities, Amortized Cost	77,041	74,386
Available-for-sale securities, Gross Unrealized Gains	241	200
Available-for-sale securities, Gross Unrealized Losses	-31	-72
Available-for-sale securities, Estimated Fair Value	77,251	74,514
Mortgage-Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale securities, Amortized Cost	32,029	32,778
Available-for-sale securities, Gross Unrealized Gains	228	191
Available-for-sale securities, Gross Unrealized Losses	-98	-187
Available-for-sale securities, Estimated Fair Value	32,159	32,782
Other Debt Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale securities, Amortized Cost	8,619	5,178
Available-for-sale securities, Gross Unrealized Gains	8	3
Available-for-sale securities, Gross Unrealized Losses	-5	-5
Available-for-sale securities, Estimated Fair Value	8,622	5,176
Municipal Bonds [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Available-for-sale securities, Amortized Cost	23,402	24,989
Available-for-sale securities, Gross Unrealized Gains	164	133
Available-for-sale securities, Gross Unrealized Losses	-5	-9
Available-for-sale securities, Estimated Fair Value	$23,561	$25,113

Marketable_Securities_Schedule1

Marketable Securities - Schedule of Amortized Cost and Estimated Fair Value of Debt Securities (Detail) (USD $)	Jun. 29, 2014	Mar. 30, 2014
In Thousands, unless otherwise specified
Available For Sale Securities Debt Maturities Fair Value [Abstract]	'	'
Due in one year or less, Amortized Cost	$15,480	'
Due after one year through three years, Amortized Cost	127,021	'
Due after three years through five years, Amortized Cost	24,378	'
Due after five years, Amortized Cost	22,131	'
Total amortized cost of debt securities	189,010	186,568
Due in one year or less, Estimated Fair Value	15,509	'
Due after one year through three years, Estimated Fair Value	127,380	'
Due after three years through five years, Estimated Fair Value	24,360	'
Due after five years, Estimated Fair Value	22,283	'
Available-for-sale securities, Estimated Fair Value	$189,532	$186,783

Marketable_Securities_Schedule2

Marketable Securities - Schedule of Unrealized Losses by Investment Category (Detail) (USD $)	Jun. 29, 2014	Mar. 30, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Fair Value of Less Than 12 Months	$50,705	$64,323
Unrealized Losses of Less Than 12 Months	-67	-286
Fair Value of 12 Months or Greater	8,231	2,838
Unrealized Losses of 12 Months or Greater	-88	-42
Fair Value, Total	58,936	67,161
Unrealized Losses, Total	-155	-328
U.S. Government and Agency Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Fair Value of Less Than 12 Months	23,407	26,879
Unrealized Losses of Less Than 12 Months	-14	-55
Fair Value of 12 Months or Greater	679	'
Unrealized Losses of 12 Months or Greater	-2	'
Fair Value, Total	24,086	26,879
Unrealized Losses, Total	-16	-55
Corporate Debt Obligations [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Fair Value of Less Than 12 Months	17,725	19,906
Unrealized Losses of Less Than 12 Months	-28	-72
Fair Value of 12 Months or Greater	464	'
Unrealized Losses of 12 Months or Greater	-3	'
Fair Value, Total	18,189	19,906
Unrealized Losses, Total	-31	-72
Mortgage-Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Fair Value of Less Than 12 Months	2,990	11,261
Unrealized Losses of Less Than 12 Months	-15	-145
Fair Value of 12 Months or Greater	7,088	2,838
Unrealized Losses of 12 Months or Greater	-83	-42
Fair Value, Total	10,078	14,099
Unrealized Losses, Total	-98	-187
Other Debt Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Fair Value of Less Than 12 Months	4,102	2,955
Unrealized Losses of Less Than 12 Months	-5	-5
Fair Value, Total	4,102	2,955
Unrealized Losses, Total	-5	-5
Municipal Bonds [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Fair Value of Less Than 12 Months	2,481	3,322
Unrealized Losses of Less Than 12 Months	-5	-9
Fair Value, Total	2,481	3,322
Unrealized Losses, Total	($5)	($9)

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments - Schedule of Assets Measured at Fair Value on a Recurring Basis (Detail) (USD $)	Jun. 29, 2014	Mar. 30, 2014
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	$189,532	$186,783
Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash and cash equivalents	60,882	91,258
Marketable securities	189,532	186,783
Total assets at fair value disclosure	250,414	278,041
Fair Value Measurements Using, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash and cash equivalents	60,882	91,258
Marketable securities	47,939	49,198
Total assets at fair value disclosure	108,821	140,456
Fair Value Measurements Using, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash and cash equivalents	0	0
Marketable securities	141,593	137,585
Total assets at fair value disclosure	141,593	137,585
U.S. Government and Agency Securities [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	47,939	49,198
U.S. Government and Agency Securities [Member] | Fair Value Measurements Using, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	47,939	49,198
U.S. Government and Agency Securities [Member] | Fair Value Measurements Using, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	0	0
Corporate Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	77,251	74,514
Corporate Debt Obligations [Member] | Fair Value Measurements Using, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	0	0
Corporate Debt Obligations [Member] | Fair Value Measurements Using, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	77,251	74,514
Mortgage-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	32,159	32,782
Mortgage-Backed Securities [Member] | Fair Value Measurements Using, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	0	0
Mortgage-Backed Securities [Member] | Fair Value Measurements Using, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	32,159	32,782
Other Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	8,622	5,176
Other Debt Securities [Member] | Fair Value Measurements Using, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	0	0
Other Debt Securities [Member] | Fair Value Measurements Using, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	8,622	5,176
Municipal Bonds [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	23,561	25,113
Municipal Bonds [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	23,561	25,113
Municipal Bonds [Member] | Fair Value Measurements Using, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	0	0
Municipal Bonds [Member] | Fair Value Measurements Using, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable securities	$23,561	$25,113

Inventories_Components_of_Inve

Inventories - Components of Inventories (Detail) (USD $)	Jun. 29, 2014	Mar. 30, 2014
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Raw materials	$2,636	$2,041
Finished goods	23,079	15,995
Total Inventory	$25,715	$18,036

StockBased_Compensation_Additi

Stock-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jun. 29, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Restricted stock units granted, shares	1.7
Weighted average grant date fair value per share, restricted stock units granted	$10.43

StockBased_Compensation_Summar

Stock-Based Compensation - Summary of Stock-Based Compensation Expense (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Jun. 29, 2014	Jun. 30, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Stock-based compensation expense	$5,540	$8,171
Cost of Revenues [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Stock-based compensation expense	355	584
Engineering and Development [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Stock-based compensation expense	2,971	4,351
Sales and Marketing [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Stock-based compensation expense	1,010	1,793
General and Administrative [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Stock-based compensation expense	$1,204	$1,443

Special_Charges_Summary_of_Spe

Special Charges - Summary of Special Charges (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Jun. 29, 2014	Jun. 30, 2013
Restructuring And Related Activities [Abstract]	'	'
Exit costs	$1,033	$9,604
Asset impairments	1,011	2,429
Other charges	500	'
Special charges	$2,544	$12,033

Special_Charges_Additional_Inf

Special Charges - Additional Information (Detail) (USD $)	3 Months Ended
	Jun. 29, 2014	Jun. 30, 2013
Restructuring Cost and Reserve [Line Items]	'	'
Special charges	$2,544,000	$12,033,000
Exit costs	1,033,000	9,604,000
Asset impairment charges	1,011,000	2,429,000
Unpaid exit costs included in current liabilities	2,500,000	'
Unpaid exit costs included in other liabilities	5,300,000	'
March 2014 Initiative [Member]	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Special charges	1,700,000	'
Exit costs	676,000	'
Asset impairment charges	1,011,000	'
June 2013 Initiative [Member]	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Special charges	400,000	'
Exit costs	357,000	'
June 2013 Initiative [Member] | Minimum [Member]	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Additional severance costs	1,000,000	'
June 2013 Initiative [Member] | Maximum [Member]	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Additional severance costs	$2,000,000	'

Special_Charges_Activity_and_L

Special Charges - Activity and Liability Balances for Exit Costs (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Jun. 29, 2014	Jun. 30, 2013
Restructuring Cost and Reserve [Line Items]	'	'
Charged to costs and expenses	$1,033	$9,604
March 2014 Initiative [Member]	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Beginning Balance	7,488	'
Charged to costs and expenses	676	'
Payments	-7,609	'
Ending Balance	555	'
March 2014 Initiative [Member] | Workforce Reductions [Member]	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Beginning Balance	3,177	'
Charged to costs and expenses	622	'
Payments	-3,384	'
Ending Balance	415	'
March 2014 Initiative [Member] | Contract Cancellation and Other [Member]	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Beginning Balance	4,311	'
Charged to costs and expenses	54	'
Payments	-4,225	'
Ending Balance	140	'
June 2013 Initiative [Member]	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Beginning Balance	8,149	'
Charged to costs and expenses	357	'
Payments	-1,255	'
Ending Balance	7,251	'
June 2013 Initiative [Member] | Workforce Reductions [Member]	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Beginning Balance	3,528	'
Charged to costs and expenses	357	'
Payments	-949	'
Ending Balance	2,936	'
June 2013 Initiative [Member] | Facilities and Other [Member]	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Beginning Balance	4,621	'
Charged to costs and expenses	'	'
Payments	-306	'
Ending Balance	$4,315	'

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Jun. 29, 2014	Jun. 30, 2013
Income Taxes [Line Items]	'	'
Provision (benefit) for income taxes	($462)	$748
Internal Revenue Service [Member]	'	'
Income Taxes [Line Items]	'	'
Income tax examination, years under examination	'2010, 2011 and 2012	'

Net_Income_Loss_Per_Share_Comp

Net Income (Loss) Per Share - Computation of Basic and Diluted Net Income (Loss) Per Share (Detail) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 29, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]	'	'
Net income (loss)	$6,000	($3,050)
Shares:	'	'
Weighted-average shares outstanding - basic	87,395	89,146
Dilutive potential common shares, using treasury stock method	858	'
Weighted-average shares outstanding - diluted	88,253	89,146
Net income (loss) per share:	'	'
Basic	$0.07	($0.03)
Diluted	$0.07	($0.03)

Net_Income_Loss_Per_Share_Addi

Net Income (Loss) Per Share - Additional Information (Detail)	3 Months Ended
In Millions, unless otherwise specified	Jun. 29, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]	'	'
Stock-based awards excluded from the diluted per share calculations	12.1	18.5