Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2017	Sep. 27, 2016	Oct. 03, 2017	Sep. 27, 2016	Jan. 03, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Document Period End Date			Oct. 03, 2017
Net Income (Loss) Available to Common Stockholders, Basic	$ (8,335)	$ (9,841)	$ (44,962)	$ (26,301)
Net loss	$ (8,335)	$ (9,841)	$ (36,995)	$ (26,301)
Shares:
Basic weighted average shares outstanding (in shares)	41,109,827	27,802,020	36,639,382	27,786,827
Effect of dilutive securities (in shares)	0	0	0	0
Diluted weighted average number of shares outstanding (in shares)	41,109,827	27,802,020	36,639,382	27,786,827
Loss per share:
Basic loss per share (USD per share)	$ (0.20)	$ (0.35)	$ (1.23)	$ (0.95)
Diluted loss per share (USD per share)	$ (0.20)	$ (0.35)	$ (1.23)	$ (0.95)
Preferred stock, shares issued (in shares)	0		0		0
Antidilutive securities excluded from computation of earnings per share	4,575,537	2,813,079	7,031,639	1,494,700