Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Apr. 01, 2012	Mar. 27, 2011	Mar. 28, 2010
Sales:
Net sales	$ 89,988	$ 101,721	$ 97,676
Net sales, related party	40,578	44,284	37,202
Total net sales	130,566	146,005	134,878
Cost of sales:
Cost of sales	49,849	52,780	48,728
Cost of sales, related party	19,888	20,972	17,581
Amortization of purchased intangible assets	3,603	6,044	5,187
Restructuring charges and exit costs	1,312	2,212
Total cost of sales	74,652	82,008	71,496
Gross profit	55,914	63,997	63,382
Operating expenses:
Research and development	35,475	49,888	48,511
Selling, general and administrative	38,860	45,267	48,861
Impairment of intangible assets and goodwill		7,485
Restructuring charges and exit costs	12,913	1,375
Total operating expenses	87,248	104,015	97,372
Loss from operations	(31,334)	(40,018)	(33,990)
Other income and expense, net:
Interest income and other, net	2,803	5,925	7,030
Interest expense	(215)	(1,258)	(1,296)
Impairment charges on investments		(62)	(317)
Total other income and expense, net	2,588	4,605	5,417
Loss before income taxes	(28,746)	(35,413)	(28,573)
Provision for (benefit from) income taxes	51	255	(463)
Net loss	$ (28,797)	$ (35,668)	$ (28,110)
Loss per share:
Basic loss per share	$ (0.64)	$ (0.81)	$ (0.64)
Diluted loss per share	$ (0.64)	$ (0.81)	$ (0.64)
Shares used in the computation of loss per share:
Basic	44,796	44,218	43,584
Diluted	44,796	44,218	43,584