CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Net sales	$ 181,167	$ 216,625	$ 254,229
Cost of sales	117,141	152,372	146,538
Gross profit	64,026	64,253	107,691
Operating expenses:
Selling, service and administration	55,753	56,051	58,555
Research, development and engineering	37,839	37,196	42,640
Restructuring costs	1,070	2,612	3,785
(Gain) loss on sale of property and equipment, net	(1,301)	(1,226)	966
Gain on acquisition of Semiconductor Systems business	(499)	0	0
Legal settlement (proceeds) costs, net	0	(15,262)	550
Net operating expenses	92,862	79,371	106,496
Operating (loss) income	(28,836)	(15,118)	1,195
Non-operating (expense) income:
Gain on sale of previously impaired auction rate securities	0	0	2,729
Other than temporary impairment of cost based investments	(9,703)	0	0
Interest and other (expense) income, net	113	253	(437)
Total non-operating (expense) income	(9,590)	253	2,292
Income (loss) before income taxes	(38,426)	(14,865)	3,487
Provision for (benefit from) income taxes	(92)	39,851	(1,417)
Net (loss) income	$ (38,334)	$ (54,716)	$ 4,904
Net (loss) income per share - basic	$ (1.28)	$ (1.86)	$ 0.17
Net (loss) income per share - diluted	$ (1.28)	$ (1.86)	$ 0.17
Weighted average number of shares - basic	29,974	29,357	28,749
Weighted average number of shares - diluted	29,974	29,357	29,461
Cash dividends paid per common share	$ 0.32	$ 2.32	$ 0.08