Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Mar. 26, 2011
Cash flows from operating activities:
Net income	$ 136,598	$ 87,983	$ 203,503
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	13,562	9,972	8,145
Stock compensation expense	21,495	12,178	8,141
Deferred income taxes	60,600	(10,154)	(120,045)
(Gain) loss on retirement or write-off of long-lived assets		23	(24)
Excess tax benefit related to the exercise of employee stock options	(106)
Other non-cash charges	4,792
Net change in operating assets and liabilities:
Accounts receivable, net	(25,232)	(5,055)	(15,135)
Inventories	(67,606)	(15,418)	(5,101)
Other assets	134	(9,783)	(1,158)
Accounts payable	22,423	10,469	7,299
Accrued salaries and benefits	3,260	1,232	2,440
Deferred income	(2,272)	384	356
Income taxes payable	263	(130)	(80)
Other accrued liabilities	(7,087)	1,494	(1,401)
Net cash provided by operating activities	160,824	83,195	86,940
Cash flows from investing activities:
Proceeds from sale of available for sale marketable securities	127,336	181,282	202,753
Purchases of available for sale marketable securities	(178,847)	(127,852)	(255,426)
Purchases of property, equipment and software	(52,902)	(35,948)	(20,060)
Proceeds from sale of assets	22,220
Investments in technology	(3,009)	(6,604)	(1,527)
Decrease in restricted investments		5,786	69
Decrease (increase) in deposits and other assets	402	1,773	(58)
Net cash (used in) provided by investing activities	(84,800)	18,437	(74,249)
Cash flows from financing activities:
Repurchase and retirement of common stock	(86,059)	(76,782)	(22,766)
Issuance of common stock, net of issuance costs	12,008	4,108	31,005
Repurchase of stock to satisfy employee tax withholding obligations	(1,674)
Excess tax benefit related to the exercise of employee stock options	106
Net cash (used in) provided by financing activities	(75,619)	(72,674)	8,239
Net increase in cash and cash equivalents	405	28,958	20,930
Cash and cash equivalents at beginning of period	65,997	37,039	16,109
Cash and cash equivalents at end of period	66,402	65,997	37,039
Cash payments during the year for:
Income taxes	$ 5,125	$ 2,268	$ 784