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 provided by operating activities:
Net income (loss)	$ (20,172)	$ 58,460	$ 69,651
Adjustments:
Depreciation	20,089	18,818	17,986
Amortization of intangible assets	20,546	16,489	19,932
Assets impairment	584	0	0
Gain from divestitures	(8,872)	(66,595)	0
Stock-based compensation expense, net of amounts capitalized in inventory	13,272	16,795	16,529
Other-than temporary impairment loss on investments	1,708	2,797	0
Deferred tax provision	(3,492)	90	120
Tax benefit from share based payment arrangements	0	(562)	(1,487)
Changes in assets and liabilities (net of amounts acquired):
Accounts receivable, net	2,483	21,189	(12,005)
Inventories	15,510	(4,802)	(15,280)
Prepayments and other assets	15,921	(637)	1,808
Accounts payable	(3,163)	(12,154)	978
Accrued compensation and related expenses	(6,933)	(5,767)	10,357
Deferred income on shipments to distributors	(245)	1,410	(5,908)
Income taxes payable and receivable	929	1,439	(19,476)
Other accrued liabilities and long-term liabilities	(4,091)	(13,193)	(8,814)
Net cash provided by operating activities	44,074	33,777	74,391
Cash flows provided by (used) for investing activities:
Acquisitions, net of cash acquired	(68,341)	(1,957)	(6,247)
Cash in escrow related to acquisitions	(7,816)	0	(1,160)
Proceeds from Divestiture of Businesses, Net of Cash Divested	14,237	70,242	0
Purchases of property, plant and equipment, net	(27,854)	(22,396)	(12,510)
Purchase of intangible assets	0	(5,000)	0
Proceeds from sale of non-marketable security	0	2,619	0
Purchases of non-marketable securities	0	0	(5,500)
Purchases of short-term investments	(207,576)	(492,672)	(447,032)
Proceeds from sales of short-term investments	59,850	295,908	42,613
Proceeds from maturities of short-term investments	171,709	200,743	429,413
Net cash provided by (used) for investing activities	(65,791)	47,487	(423)
Cash flows used for financing activities:
Proceeds from issuance of common stock	17,395	16,288	15,296
Repurchase of common stock	0	(67,472)	(107,607)
Excess tax benefit from share based payment arrangements	0	562	1,487
Net cash used for financing activities	17,395	(50,622)	(90,824)
Effect of exchange rates on cash and cash equivalents	235	(398)	1,010
Net increase (decrease) in cash and cash equivalents	(4,087)	30,244	(15,846)
Cash and cash equivalents at beginning of period	134,924	104,680	120,526
Cash and cash equivalents at end of period	130,837	134,924	104,680
Supplemental disclosure of cash flow information
Cash Paid for Interest	1,374	1,184	6
Cash Paid for Income taxes, net of refunds	(84)	(197)	(127)
Noncash investing and financing activities:
Noncash or Part Noncash Acquisition, Fixed Assets Acquired	$ 523	$ 2,489	$ 543