Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jul. 01, 2014	Jun. 30, 2015	Jul. 01, 2014
Earnings Per Share [Abstract]
Net income	$ 3,062	$ 3,527	$ 310	$ 4,951
Shares:
Basic weighted average shares outstanding (in shares)	29,950,122	29,703,884	29,896,663	29,655,102
Dilutive stock options and warrants (in shares)	769,980	1,359,890	895,615	1,406,620
Diluted weighted average number of shares outstanding (in shares)	30,720,102	31,063,774	30,792,278	31,061,722
Earnings per share:
Basic EPS (USD per share)	$ 0.10	$ 0.12	$ 0.01	$ 0.17
Diluted EPS (USD per share)	$ 0.10	$ 0.11	$ 0.01	$ 0.16
Antidilutive securities excluded from computation of earnings per share	1,214,159	243,552	809,711	243,552