Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 03, 2017	Sep. 27, 2016	Jun. 28, 2016	Mar. 29, 2016	Dec. 29, 2015	Sep. 29, 2015	Jun. 30, 2015	Mar. 31, 2015	Jan. 03, 2017	Dec. 29, 2015	Dec. 30, 2014
Earnings Per Share [Abstract]
Net (loss) income	$ (45,376)	$ (9,841)	$ (14,087)	$ (2,373)	$ (4,254)	$ (9,821)	$ 3,062	$ (2,752)	$ (71,677)	$ (13,765)	$ 11,428
Shares:
Basic weighted average shares outstanding (in shares)									27,808,708	28,938,901	29,717,304
Dilutive stock options and warrants (in shares)									0	0	1,283,795
Diluted weighted average number of shares outstanding (in shares)									27,808,708	28,938,901	31,001,099
Earnings per share:
Basic EPS (USD per share)	$ (1.63)	$ (0.35)	$ (0.51)	$ (0.09)	$ (0.15)	$ (0.35)	$ 0.10	$ (0.09)	$ (2.58)	$ (0.48)	$ 0.38
Diluted EPS (USD per share)	$ (1.63)	$ (0.35)	$ (0.51)	$ (0.09)	$ (0.15)	$ (0.35)	$ 0.10	$ (0.09)	$ (2.58)	$ (0.48)	$ 0.37
Antidilutive securities excluded from computation of earnings per share									2,697,697	3,184,949	247,427