Net Income (Loss) Per Share Earnings Per Share Table (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 01, 2017	Oct. 02, 2016	Jul. 03, 2016	Apr. 03, 2016	Jan. 03, 2016	Sep. 27, 2015	Jun. 28, 2015	Mar. 29, 2015	Jan. 01, 2017	Jan. 03, 2016	Dec. 28, 2014
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income (loss)	$ 29,462	$ 4,489	$ 9,376	$ 2,145	$ 7,018	$ 7,239	$ (4,977)	$ (9,276)	$ 45,472	$ 4	$ (38,117)
Net income available to common stockholders									$ 35,395	$ 3	$ (38,117)
Basic weighted average common shares outstanding									35,178,329	34,958,847	30,885,275
Basic and diluted net income (loss) per share	$ 0.65	$ 0.10	$ 0.21	$ 0.05	$ 0.16	$ 0.16	$ (0.14)	$ (0.27)	$ 1.01	$ 0.00	$ (1.23)
Net income (loss)	$ 29,462	$ 4,489	$ 9,376	$ 2,145	$ 7,018	$ 7,239	$ (4,977)	$ (9,276)	$ 45,472	$ 4	$ (38,117)
Basic weighted average common shares outstanding									35,178,329	34,958,847	30,885,275
Weighted Average Number Diluted Shares Outstanding Adjustment									9,673,016	9,664,404	0
Diluted weighted average common shares outstanding									44,851,345	44,623,251	30,885,275
Basic and diluted net income (loss) per share	$ 0.65	$ 0.10	$ 0.21	$ 0.05	$ 0.16	$ 0.16	$ (0.14)	$ (0.27)	$ 1.01	$ 0.00	$ (1.23)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount									0	0	9,810,007
Restricted Stock [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Less: income attributable to participating securities									$ (616)	$ 0	$ 0
Convertible Preferred Stock [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Less: income attributable to participating securities									$ (9,461)	$ (1)	$ 0