Stock Based Compensation (Details 3) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Sep. 29, 2012	Dec. 31, 2011
Stock options outstanding, exercisable and expected to vest
Options outstanding, Number of Shares	1,426,157	1,766,401
Options outstanding, Weighted Average Exercise Price	$ 3.61	$ 3.63
Options outstanding, Weighted Average Remaining Contractual Life (Years)	3 years 2 months 1 day
Options outstanding, Aggregate Intrinsic Value	$ 1,000
Options vested and expected to vest, Number of Shares	1,351,086
Options vested and expected to vest, Weighted Average Exercise Price	$ 3.61
Options vested and expected to vest, Weighted Average Remaining Contractual Life (Years)	3 years 18 days
Options vested and expected to vest, Aggregate Intrinsic Value	979
Options exercisable, Number of Shares	1,127,084
Options exercisable, Weighted Average Exercise Price	$ 3.59
Options exercisable, Weighted Average Remaining Contractual Life (Years)	2 years 6 months 22 days
Options exercisable, Aggregate Intrinsic Value	$ 935