Income Taxes - Components of Provision for Income Taxes from Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Current income tax provision:
Federal	$ 123
State	166	$ 100
Foreign	66	35
Total current	355	135
Deferred income tax provision:
Federal	(159)	(2)
State	(32)	12
Total deferred	(191)	10
Total income tax provision	$ 164	$ 145