Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Dec. 28, 2014	Dec. 29, 2013
Cash flows from operating activities:
Net income	$ 39,445us-gaap_NetIncomeLoss	$ 28,513us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	35,511us-gaap_DepreciationAndAmortization	23,620us-gaap_DepreciationAndAmortization
Stock-based compensation	15,178us-gaap_ShareBasedCompensation	18,047us-gaap_ShareBasedCompensation
Deferred income taxes	(316)us-gaap_DeferredIncomeTaxExpenseBenefit	(5,355)us-gaap_DeferredIncomeTaxExpenseBenefit
Asset impairments	1,455us-gaap_AssetImpairmentCharges	3,129us-gaap_AssetImpairmentCharges
Other non-cash items	1,257us-gaap_OtherNoncashIncomeExpense	2,577us-gaap_OtherNoncashIncomeExpense
Changes in operating assets and liabilities:
Accounts receivable	(29,892)	(5,088)
Inventories	(12,903)us-gaap_IncreaseDecreaseInInventories	6,116us-gaap_IncreaseDecreaseInInventories
Other assets	1,236	537
Accounts payable	4,121	(1,919)
Accrued compensation	(7,501)	(2,719)
Accrued taxes, net	1,147	7,734
Other liabilities	(11,398)	2,841
Net cash provided by operating activities	37,340	78,033
Cash flows from investing activities:
Purchases of available-for-sale securities	(123,431)	(259,008)
Proceeds from sales and maturities of available-for-sale securities	116,260	261,253
Purchases of property and equipment	(15,420)	(21,043)
Net cash used in investing activities	(22,591)	(18,798)
Cash flows from financing activities:
Proceeds from issuance of common stock under stock-based awards	5,144	6,756
Minimum tax withholding paid on behalf of employees for restricted stock units	(3,589)	(4,584)
Purchases of treasury stock	(11,834)	(47,785)
Other financing activities	(220)	(156)
Net cash used in financing activities	(10,499)	(45,769)
Net increase in cash and cash equivalents	4,250	13,466
Cash and cash equivalents at beginning of period	91,258	95,532
Cash and cash equivalents at end of period	$ 95,508	$ 108,998

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