Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 04, 2017	Jun. 28, 2016	Jul. 04, 2017	Jun. 28, 2016	Jan. 03, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Document Period End Date			Jul. 04, 2017
Net Income (Loss) Available to Common Stockholders, Basic	$ (8,816)	$ (14,087)	$ (36,627)	$ (16,460)
Shares:
Basic weighted average shares outstanding (in shares)	40,779,277	27,776,094	34,404,222	27,754,615
Effect of dilutive securities (in shares)	0	0	0	0
Diluted weighted average number of shares outstanding (in shares)	40,779,277	27,776,094	34,404,222	27,754,615
Loss per share:
Basic loss per share (USD per share)	$ (0.22)	$ (0.51)	$ (1.06)	$ (0.59)
Diluted loss per share (USD per share)	$ (0.22)	$ (0.51)	$ (1.06)	$ (0.59)
Preferred stock, shares issued (in shares)	0		0		0
Antidilutive securities excluded from computation of earnings per share	3,393,950	1,561,256	5,631,982	1,559,515