CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Apr. 01, 2012	Apr. 03, 2011
Cash flows from operating activities:
Net income	$ 73,136	$ 229,436	$ 139,090
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	28,630	31,641	34,400
Stock-based compensation	30,363	32,592	35,007
Deferred income taxes	(110)	(4,813)	4,425
Gain on sale of business		(103,509)
Other non-cash items	3,954	5,946	1,341
Changes in operating assets and liabilities, net of disposition:
Accounts receivable	10,635	(6,533)	3,113
Inventories	(436)	(843)	(7,528)
Other assets	(3,346)	361	770
Accounts payable	(3,555)	(4,908)	(3,192)
Accrued compensation	(873)	2,468	3,705
Accrued taxes, net	(37,314)	(16,265)	(15,522)
Other liabilities	(3,919)	590	(5,052)
Net cash provided by operating activities	97,165	166,163	190,557
Cash flows from investing activities:
Purchases of available-for-sale securities	(298,621)	(573,635)	(278,878)
Proceeds from sales and maturities of available-for-sale securities	308,947	433,644	203,160
Proceeds from disposition of trading securities			23,800
Distributions from other investment securities			329
Purchases of property and equipment	(46,765)	(32,731)	(23,260)
Proceeds from sale of business		124,969
Net cash used in investing activities	(36,439)	(47,753)	(74,849)
Cash flows from financing activities:
Payments for debt issuance costs	(1,076)
Proceeds from issuance of common stock under stock-based awards	8,250	29,961	36,090
Excess tax benefits from stock-based awards	177	708	1,674
Minimum tax withholding paid on behalf of employees for restricted stock units	(5,635)	(5,473)	(6,780)
Purchases of treasury stock	(131,426)	(126,870)	(189,220)
Net cash used in financing activities	(129,710)	(101,674)	(158,236)
Net increase (decrease) in cash and cash equivalents	(68,984)	16,736	(42,528)
Cash and cash equivalents at beginning of year	164,516	147,780	190,308
Cash and cash equivalents at end of year	95,532	164,516	147,780
Supplemental disclosure of cash flow information:
Cash paid during the year for income taxes, net of refunds received	$ 23,434	$ 25,311	$ 17,000