Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Oct. 02, 2011	Sep. 26, 2010	Oct. 02, 2011	Sep. 26, 2010
Sales:
Net sales	$ 25,910	$ 25,885	$ 50,983	$ 54,250
Net sales, related party	10,210	11,348	22,115	22,619
Total net sales	36,120	37,233	73,098	76,869
Cost of sales:
Cost of sales	13,661	13,205	27,150	27,284
Cost of sales, related party	4,825	5,222	10,568	10,410
Amortization of purchased intangible assets	905	1,515	1,810	3,068
Total cost of sales	19,391	19,942	39,528	40,762
Gross profit	16,729	17,291	33,570	36,107
Operating expenses:
Research and development	8,838	11,840	18,233	26,283
Selling, general and administrative	9,373	11,083	18,973	24,040
Total operating expenses	18,211	22,923	37,206	50,323
Loss from operations	(1,482)	(5,632)	(3,636)	(14,216)
Other income and expense, net:
Interest income and other, net	715	1,578	1,426	3,191
Interest expense	(61)	(316)	(121)	(634)
Impairment charges on investments	0	(62)	0	(62)
Total other income and expense, net	654	1,200	1,305	2,495
Loss before income taxes	(828)	(4,432)	(2,331)	(11,721)
Provision for income taxes	249	27	172	152
Net loss	$ (1,077)	$ (4,459)	$ (2,503)	$ (11,873)
Loss per share:
Basic loss per share	$ (0.02)	$ (0.10)	$ (0.06)	$ (0.27)
Diluted loss per share	$ (0.02)	$ (0.10)	$ (0.06)	$ (0.27)
Shares used in the computation of loss per share:
Basic	44,759	44,173	44,676	44,035
Diluted	44,759	44,173	44,676	44,035