Stock Based Compensation (Details Textual) (USD $)	1 Months Ended			3 Months Ended		9 Months Ended			3 Months Ended	9 Months Ended
	Feb. 28, 2013	Feb. 29, 2012	May 31, 2011	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013 Minimum	Mar. 30, 2013 Restricted stock units	Sep. 28, 2013 Restricted stock units	Sep. 28, 2013 Restricted Stock Awards
Stock Based Compensation (Additional Textual) [Abstract]
Weighted-average grant date fair value of the options granted				$ 3.19	$ 2.37	$ 3.12	$ 2.70
Dividend yield				0.00%	0.00%	0.00%	0.00%
Stock-based compensation capitalized into inventory				$ 17,000	$ 11,000
Total intrinsic value of options exercised						231,000	225,000
Total unrecognized compensation cost, net of expected forfeitures, related to non-vested share-based compensation arrangements under the Incentive Plan				1,000,000		1,000,000
Compensation cost recognition, weighted average period (years)						3 years 1 month 2 days
Weighted grant date fair value of restricted stock units granted						318,000
Weighted-average grant date fair value of restricted stock units granted				$ 4.51		$ 4.51
Period consider for calculation of average stock price performance prior awards vesting										2 months
Period consider for calculation of average stock price performance after awards vesting										2 months
Stock repurchase program authorized amount	3,000,000	4,000,000	2,000,000
Stock repurchase paid						12 months
Stock repurchase, shares						36,537
Shares repurchased price, per share						$ 5.31
Common shares under the stock repurchase program						$ 2,800,000
Common stock converted from Series A Preferred Stock, shares						1,000,000
Trading price of common stock per share								$ 5.00
Number of consecutive trading days						30 days
Stock Based Compensation (Textual) [Abstract]
Restricted stock units granted									220,000	230,509	3,503
Restricted stock vested during the period										17,249	0
Restricted stock forfeited during the period										0	0