Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Net sales	$ 18,871	$ 37,011	$ 65,403	$ 97,956
Cost of sales	16,038	32,912	59,654	94,282
Gross profit	2,833	4,099	5,749	3,674
Research and development expenses	5,600	9,551	21,438	29,264
Selling and administrative expenses	3,792	5,782	13,454	18,239
Restructuring charges	105		5,965	1,915
Operating loss	(6,664)	(11,234)	(35,108)	(45,744)
Interest income	1	46	7	204
Interest expense	(76)	(31)	(169)	(51)
Other income, net	70	15	1,817	1,569
Net loss	$ (6,669)	$ (11,204)	$ (33,453)	$ (44,022)
Basic and diluted loss per share (in Dollars per share)	$ (0.08)	$ (0.13)	$ (0.39)	$ (0.55)
Basic and diluted (in Shares)	86,199	83,723	85,550	79,974