Income Taxes - Components of Provision (Benefit) for Income Taxes from Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Current income tax provision:
State	$ 100	$ 207
Foreign	35
Total current	135	207
Deferred income tax (benefit) provision:
Federal	(2)	(195)
State	12	(251)
Total deferred	10	(446)
Total income tax provision (benefit)	$ 145	$ (239)