Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jan. 01, 2012	Dec. 26, 2010	Jan. 01, 2012	Dec. 26, 2010
Sales:
Net sales	$ 20,749	$ 24,892	$ 71,732	$ 79,142
Net sales, related party	8,930	10,473	31,045	33,092
Total net sales	29,679	35,365	102,777	112,234
Cost of sales:
Cost of sales	11,130	12,742	38,280	40,026
Cost of sales, related party	4,299	5,007	14,867	15,417
Amortization of purchased intangible assets	905	1,533	2,715	4,601
Total cost of sales	16,334	19,282	55,862	60,044
Gross profit	13,345	16,083	46,915	52,190
Operating expenses:
Research and development	8,871	12,071	27,104	38,354
Selling, general and administrative	9,909	10,298	28,882	34,338
Total operating expenses	18,780	22,369	55,986	72,692
Loss from operations	(5,435)	(6,286)	(9,071)	(20,502)
Other income and expense, net:
Interest income and other, net	593	1,577	2,019	4,768
Interest expense	(60)	(313)	(181)	(947)
Impairment charges on investments	0	0	0	(62)
Total other income and expense, net	533	1,264	1,838	3,759
Loss before income taxes	(4,902)	(5,022)	(7,233)	(16,743)
Provision for (benefit from) income taxes	(169)	(63)	3	89
Net loss	$ (4,733)	$ (4,959)	$ (7,236)	$ (16,832)
Loss per share:
Basic loss per share	$ (0.11)	$ (0.11)	$ (0.16)	$ (0.38)
Diluted loss per share	$ (0.11)	$ (0.11)	$ (0.16)	$ (0.38)
Shares used in the computation of loss per share:
Basic	44,830	44,300	44,726	44,123
Diluted	44,830	44,300	44,726	44,123