Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2016	Jun. 30, 2015	Jun. 28, 2016	Jun. 30, 2015
Earnings Per Share [Abstract]
Net (loss) income	$ (14,087)	$ 3,062	$ (16,460)	$ 310
Shares:
Basic weighted average shares outstanding (in shares)	27,776,094	29,950,122	27,754,615	29,896,663
Effect of dilutive securities (in shares)	0	769,980	0	895,615
Diluted weighted average number of shares outstanding (in shares)	27,776,094	30,720,102	27,754,615	30,792,278
(Loss) earnings per share:
Basic loss per share (USD per share)	$ (0.51)	$ 0.10	$ (0.59)	$ 0.01
Diluted loss per share (USD per share)	$ (0.51)	$ 0.10	$ (0.59)	$ 0.01
Antidilutive securities excluded from computation of earnings per share	1,561,256	1,214,159	1,559,515	809,711