CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 29, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net income (loss)	$ 21,843	$ (2,264)
Adjustments:
Depreciation	5,713	5,471
Amortization of intangible assets	2,548	4,321
Impairment of assets held for sale	8,471	0
Gain from divestitures, net	(16,840)	0
Stock-based compensation expense, net of amounts capitalized in inventory	5,013	4,986
Deferred tax provision	47	5
Changes in assets and liabilities:
Accounts receivable, net	(3,154)	(3,564)
Inventories	3,938	(179)
Prepayments and other assets	1,330	3,312
Accounts payable	(2,114)	1,930
Accrued compensation and related expenses	(1,091)	1,499
Deferred income on shipments to distributors	120	(577)
Income taxes payable and receivable	(258)	(1,143)
Other accrued liabilities and long-term liabilities	(1,446)	109
Net cash provided by operating activities	24,120	13,906
Cash flows from investing activities:
Cash in escrow related to acquisitions	(1,026)	0
Proceeds from divestitures	15,300	0
Purchases of property, plant and equipment	(4,753)	(3,981)
Purchases of short-term investments	(46,659)	(115,695)
Proceeds from sales of short-term investments	30,988	75,027
Proceeds from maturities of short-term investments	18,942	9,721
Net cash provided by (used in) investing activities	14,844	(34,928)
Cash flows from financing activities:
Proceeds from issuance of common stock	6,221	7,719
Repurchase of common stock	(30,742)	0
Payment of acquisition related contingent consideration	(1,600)	(3,330)
Net cash (used in) provided by financing activities	(26,121)	4,389
Effect of exchange rates on cash and cash equivalents	330	(209)
Net increase (decrease) in cash and cash equivalents	13,173	(16,842)
Cash and cash equivalents at beginning of period	91,211	130,837
Cash and cash equivalents at end of period	$ 104,384	$ 113,995