Income Taxes (Components of Provision (Benefit) for Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Jan. 01, 2019	Jan. 02, 2018
Current tax provision:
Federal	$ 0	$ 0	$ 0
State	36	35	21
Foreign	0	0	0
Total current tax provision	36	35	21
Deferred tax provision (benefit):
Federal	52	(202)	(252)
State	16	(81)	24
Foreign	0	0	0
Total deferred tax provision (benefit)	68	(283)	(228)
Total provision (benefit) for income taxes	$ 104	$ (248)	$ (207)