Income Taxes Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jan. 01, 2017	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Income Tax Disclosure [Abstract]
Federal operating loss carryforwards		$ 89,600
Income tax expense, valuation allowance	$ (30,400)	0	$ 0	$ (30,374)
Unrecognized Tax Benefits		0	0
Change in valuation allowance	$ 30,400	0	0	30,374
Unrecognized Tax Benefits, Interest on Income Taxes Accrued		0	0
Discrete tax benefit				800
Miscellaneous		$ 73	$ (312)	$ 244