Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Jul. 01, 2012	Apr. 01, 2012
Current assets:
Cash and cash equivalents	$ 117,052	$ 164,516
Marketable securities	379,290	373,439
Accounts receivable, less allowance for doubtful accounts of $1,474 and $1,446 as of July 1, 2012 and April 1, 2012, respectively	78,784	76,588
Inventories	22,153	19,724
Deferred tax assets	16,510	16,780
Other current assets	35,523	35,842
Total current assets	649,312	686,889
Property and equipment, net	81,787	78,010
Goodwill	110,976	110,976
Purchased intangible assets, net	4,971	5,277
Deferred tax assets	32,190	30,558
Other assets	1,556	1,708
Total assets	880,792	913,418
Current liabilities:
Accounts payable	35,441	34,198
Accrued compensation	20,431	28,326
Accrued taxes	2,362	2,799
Deferred revenue	6,235	6,504
Other current liabilities	15,506	9,390
Total current liabilities	79,975	81,217
Accrued taxes	65,710	64,853
Other liabilities	7,656	7,505
Total liabilities	153,341	153,575
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; 211,466,000 and 210,688,000 shares issued as of July 1, 2012 and April 1, 2012, respectively	211	211
Additional paid-in capital	907,762	901,734
Retained earnings	1,635,587	1,617,201
Accumulated other comprehensive income	957	1,033
Treasury stock, at cost: 115,718,000 and 111,911,000 shares as of July 1, 2012 and April 1, 2012, respectively	(1,817,066)	(1,760,336)
Total stockholders' equity	727,451	759,843
Total liabilities and stockholders' equity	$ 880,792	$ 913,418