Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
Net sales	$ 20,237	$ 50,504
Cost of sales	15,869	33,570
Gross profit	4,368	16,934
Operating expenses:
Research, development and engineering	4,313	6,630
Selling, general and administrative	7,550	10,867
Restructuring charges	2,258	720
Total operating expenses	14,121	18,217
Loss from operations	(9,753)	(1,283)
Interest income (expense), net	16	31
Other income (expense), net	283	382
Loss before income taxes	(9,454)	(870)
Provision for (benefit from) income taxes	54	249
Net loss	$ (9,508)	$ (1,119)
Net loss per share:
Basic and diluted (in usd per share)	$ (0.16)	$ (0.02)
Shares used in computing net loss per share:
Basic and Diluted (in shares)	58,728	58,420