Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data	3 Months Ended	9 Months Ended
Oct. 02, 2011	Sep. 26, 2010	Oct. 02, 2011	Sep. 26, 2010
Condensed Consolidated Statements of Operations
Net sales	$ 44,945	$ 39,762	$ 143,253	$ 97,077
Cost of sales	28,272	25,248	97,229	64,875
Gross profit	16,673	14,514	46,024	32,202
Operating expenses:
Research, development and engineering	6,733	6,935	19,893	20,400
Selling, general and administrative	12,384	12,550	37,762	37,481
Restructuring charges	181	13	103	(64)
Total operating expenses	19,298	19,498	57,758	57,817
Loss from operations	(2,625)	(4,984)	(11,734)	(25,615)
Interest income (expense), net	24	6	61	4
Other income (expense), net	548	(1,431)	(1,927)	452
Loss before income taxes	(2,053)	(6,409)	(13,600)	(25,159)
Provision for (benefit from) income taxes	236	(43)	176	343
Net loss	$ (2,289)	$ (6,366)	$ (13,776)	$ (25,502)
Net loss per share:
Basic and diluted	$ (0.04)	$ (0.13)	$ (0.25)	$ (0.51)
Shares used in computing net loss per share:
Basic and diluted	58,224	50,094	54,324	50,044

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