Income Taxes Schedule of Components of income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016
Income Tax Disclosure [Abstract]
Federal	$ 0	$ 0	$ 0
State	30	0	0
Current Income Tax Expense (Benefit)	30	0	0
Federal	(219)	1,297	(2,901)
State	793	992	(58)
Deferred	574	2,289	(2,959)
Income tax expense, valuation allowance	0	(30,374)	2,959
Provision (benefit) for income taxes	$ 604	$ (28,085)	$ 0