CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Sep. 30, 2012	Oct. 02, 2011
Cash flows provided by operating activities:
Net Income (loss)	$ (4,388)	$ 51,901
Adjustments:
Depreciation	9,601	9,570
Amortization of intangible assets	10,467	8,123
Gain from divestitures	(886)	(45,939)
Stock-based compensation expense, net of amounts capitalized in inventory	6,532	8,149
Deferred tax provision	(4,297)	(2)
Tax benefit from share based payment arrangements	(45)	0
Changes in assets and liabilities (net of amounts acquired):
Accounts receivable, net	(6,563)	5,358
Inventories	11,846	(12,628)
Prepayments and other assets	6,976	2,958
Accounts payable	(782)	(5,879)
Accrued compensation and related expenses	(4,962)	(196)
Deferred income on shipments to distributors	169	3,180
Income taxes payable and receivable	26	1,136
Other accrued liabilities and long-term liabilities	1,063	(2,795)
Net cash provided by operating activities	24,757	22,936
Cash flows provided by (used for) investing activities:
Acquisitions, net of cash acquired	(68,341)	0
Cash in escrow related to acquisitions	(7,816)	0
Proceeds from divestitures	5,000	51,670
Purchases of property, plant and equipment, net	(17,263)	(13,322)
Purchases of short-term investments	(92,150)	(310,494)
Proceeds from sales of short-term investments	27,162	220,163
Proceeds from maturities of short-term investments	84,690	98,068
Net cash provided by (used for) investing activities	(68,718)	46,085
Cash flows provided by (used for) financing activities:
Proceeds from issuance of common stock	6,138	7,679
Repurchase of common stock	0	(47,465)
Excess tax benefit from share based payment arrangements	45	0
Net cash provided by (used for) financing activities	6,183	(39,786)
Effect of exchange rates on cash and cash equivalents	725	(524)
Net increase (decrease) in cash and cash equivalents	(37,053)	28,711
Cash and cash equivalents at beginning of period	134,924	104,680
Cash and cash equivalents at end of period	$ 97,871	$ 133,391