Income Taxes - Components of Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Current:
Federal	$ 0	$ (13)
State	89	170
Foreign	68	66
Total current provision	157	223
Deferred:
Federal	(2)	(80)
State	(45)	46
Foreign	(13)	(3)
Total deferred benefit	(60)	(37)
Less: (Benefit from) provision for income taxes from discontinued operations, net	0	(261)
Provision for (benefit from) income taxes from continuing operations, net	$ 97	$ 447