Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2016	Sep. 29, 2015	Sep. 27, 2016	Sep. 29, 2015
Earnings Per Share [Abstract]
Net loss	$ (9,841)	$ (9,821)	$ (26,301)	$ (9,511)
Shares:
Basic weighted average shares outstanding (in shares)	27,802,020	28,253,859	27,786,827	29,349,061
Effect of dilutive securities (in shares)	0	0	0	0
Diluted weighted average number of shares outstanding (in shares)	27,802,020	28,253,859	27,786,827	29,349,061
Loss per share:
Basic loss per share (USD per share)	$ (0.35)	$ (0.35)	$ (0.95)	$ (0.32)
Diluted loss per share (USD per share)	$ (0.35)	$ (0.35)	$ (0.95)	$ (0.32)
Antidilutive securities excluded from computation of earnings per share	2,813,079	2,837,962	1,494,700	2,837,962