Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Apr. 01, 2012	Mar. 27, 2011
Net sales	$ 85,856	$ 89,988	$ 101,721
Net sales, related party	36,170	40,578	44,284
Total net sales	122,026	130,566	146,005
Cost of sales	45,943	49,839	52,780
Cost of sales, related party	16,716	19,888	20,972
Amortization of purchased intangible assets	3,379	3,603	6,044
Restructuring charges and exit costs	1,600	14,200	3,600
Total operating expenses	56,270	86,517	104,015
Loss from operations	(583)	(30,593)	(40,018)
Interest income and other, net	2,441	2,803	5,925
Interest expense	(165)	(215)	(1,258)
Impairment charges on investments			(62)
Total other income and expense, net	2,276	2,588	4,605
Income (loss) before income taxes	1,693	(28,005)	(35,413)
Provision for (benefit from) income taxes	(1,189)	51	255
Net income (loss)	2,882	(28,056)	(35,668)
Basic (in Dollars per share)	$ 0.06	$ (0.63)	$ (0.81)
Diluted (in Dollars per share)	$ 0.06	$ (0.63)	$ (0.81)
Basic (in Shares)	45,809,000	44,796,000	44,218,000
Diluted (in Shares)	46,476,000	44,796,000	44,218,000
Total cost of sales	66,339	74,642	82,008
Gross profit	55,687	55,924	63,997
Research and development	22,379	35,006	49,888
Selling, general and administrative	32,638	38,598	45,267
Impairment of intangible assets and goodwill			7,485
Cost of Sales [Member]
Restructuring charges and exit costs	301	1,312	2,212
Operating Expense [Member]
Restructuring charges and exit costs	$ 1,253	$ 12,913	$ 1,375