Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Apr. 01, 2012	Apr. 03, 2011
Condensed Consolidated Statements of Operations
Net sales	$ 50,504	$ 47,049
Cost of sales	33,570	34,168
Gross profit	16,934	12,881
Operating expenses:
Research, development and engineering	6,630	6,515
Selling, general and administrative	10,867	11,512
Restructuring charges	720	(65)
Total operating expenses	18,217	17,962
Loss from operations	(1,283)	(5,081)
Interest income (expense), net	31	(21)
Other income (expense), net	382	(1,506)
Loss before income taxes	(870)	(6,608)
Provision for (benefit from) income taxes	249	(334)
Net loss	$ (1,119)	$ (6,274)
Net loss per share:
Basic and diluted	$ (0.02)	$ (0.12)
Shares used in computing net loss per share:
Basic and diluted	58,420	50,287