Condensed Consolidated Statements of Operations (Unaudited) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jul. 01, 2012	Jul. 03, 2011
Sales:
Net sales	$ 19,447,000	$ 25,073,000
Net sales, related party	9,804,000	11,905,000
Total net sales	29,251,000	36,978,000
Cost of sales:
Cost of sales	10,870,000	13,337,000
Cost of sales, related party	4,512,000	5,743,000
Amortization of purchased intangible assets	919,000	905,000
Restructuring charges and exit costs	81,000	152,000
Total cost of sales	16,382,000	20,137,000
Gross profit	12,869,000	16,841,000
Operating expenses:
Research and development	5,449,000	9,280,000
Selling, general and administrative	7,782,000	9,542,000
Restructuring charges and exit costs	804,000	173,000
Total operating expenses	14,035,000	18,995,000
Loss from operations	(1,166,000)	(2,154,000)
Other income and expense, net:
Interest income and other, net	646,000	711,000
Interest expense	(34,000)	(60,000)
Total other income and expense, net	612,000	651,000
Loss before income taxes	(554,000)	(1,503,000)
Provision for (benefit from) income taxes	22,000,000	(77,000)
Net loss	$ (576,000)	$ (1,426,000)
Loss per share:
Basic and diluted loss per share	$ (0.01)	$ (0.03)
Shares used in the computation of loss per share:
Basic and diluted	45,388	44,599