Consolidated Statements of Stockholders' Equity and Comprehensive Income (USD $) In Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning Balance at Mar. 30, 2008	$ 665,916	$ 200	$ 657,893	$ 1,084,938	$ (2,530)	$ (1,074,585)
Beginning Balance, Shares at Mar. 30, 2008		133,014
Net income	108,789			108,789
Change in unrealized gains and losses on investment securities, net of income taxes	3,164				3,164
Comprehensive income	111,953
Issuance of common stock under stock-based awards	23,541	2	23,539
Issuance of common stock under stock-based awards, Shares		2,246
Increase (decrease) in excess tax benefits from stock-based awards	279		279
Stock-based compensation	28,646		28,646
Common stock issued related to business acquisition	1,707		1,707
Common stock issued related to business acquisition, Shares		111
Purchases of treasury stock	(205,497)					(205,497)
Purchases of treasury stock, Shares		(15,840)
Ending Balance at Mar. 29, 2009	626,545	202	712,064	1,193,727	634	(1,280,082)
Ending Balance, Shares at Mar. 29, 2009		119,531
Net income	54,948			54,948
Change in unrealized gains and losses on investment securities, net of income taxes	572				572
Comprehensive income	55,520
Issuance of common stock under stock-based awards	31,500	3	31,497
Issuance of common stock under stock-based awards, Shares		2,772
Increase (decrease) in excess tax benefits from stock-based awards	(1,278)		(1,278)
Stock-based compensation	35,232		35,232
Common stock issued related to business acquisition	1,338		1,338
Common stock issued related to business acquisition, Shares		112
Purchases of treasury stock	(165,518)					(165,518)
Purchases of treasury stock, Shares		(10,108)
Ending Balance at Mar. 28, 2010	583,339	205	778,853	1,248,675	1,206	(1,445,600)
Ending Balance, Shares at Mar. 28, 2010		112,307
Net income	139,090			139,090
Change in unrealized gains and losses on investment securities, net of income taxes	(592)				(592)
Comprehensive income	138,498
Issuance of common stock under stock-based awards	29,310	3	29,307
Issuance of common stock under stock-based awards, Shares		3,121
Increase (decrease) in excess tax benefits from stock-based awards	805		805
Stock-based compensation	35,007		35,007
Common stock issued related to business acquisition	574		574
Common stock issued related to business acquisition, Shares		28
Purchases of treasury stock	(186,369)					(186,369)
Purchases of treasury stock, Shares		(10,739)
Ending Balance at Apr. 03, 2011	$ 601,164	$ 208	$ 844,546	$ 1,387,765	$ 614	$ (1,631,969)
Ending Balance, Shares at Apr. 03, 2011		104,717