Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Dec. 27, 2015	Dec. 28, 2014
Cash flows from operating activities:
Net income	$ 28,227	$ 39,445
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	30,618	35,511
Stock-based compensation	12,157	15,178
Deferred income taxes	4,616	(316)
Asset impairments	1,954	1,455
Other non-cash items, net	674	1,257
Changes in operating assets and liabilities:
Accounts receivable	17,905	(29,892)
Inventories	(10,298)	(12,903)
Other assets	3,234	1,236
Accounts payable	(7,365)	4,121
Accrued compensation	(6,010)	(7,501)
Accrued taxes, net	(8,543)	1,147
Other liabilities	(3,846)	(11,398)
Net cash provided by operating activities	63,323	37,340
Cash flows from investing activities:
Purchases of available-for-sale securities	(173,476)	(123,431)
Proceeds from sales and maturities of available-for-sale securities	159,911	116,260
Purchases of property and equipment	(21,991)	(15,420)
Proceeds from disposition of assets held for sale	7,553
Net cash used in investing activities	(28,003)	(22,591)
Cash flows from financing activities:
Proceeds from issuance of common stock under stock-based awards	20,010	5,144
Minimum tax withholding paid on behalf of employees for restricted stock units	(5,736)	(3,589)
Purchases of treasury stock	(78,859)	(11,834)
Other financing activities	1,093	(220)
Net cash used in financing activities	(63,492)	(10,499)
Net increase (decrease) in cash and cash equivalents	(28,172)	4,250
Cash and cash equivalents at beginning of period	115,241	91,258
Cash and cash equivalents at end of period	$ 87,069	$ 95,508