Income Taxes - Summary of Effective Tax Rate (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
U.S. federal income taxes at the statutory rate		$ (1,919)	$ (1,533)
State taxes, net of federal effects		(464)	(122)
UK Anti-Hybrid expense addback		(1,837)	289
Transaction costs		0	0
Goodwill impairment		0	114
Section 382 Limitation		0	0
Adjustment to NOL Benefit		20	4,640
NOL Carryforward Adjustment for Expired NOLs		78	84
Stock Compensation Plan Adjustments		(38)	272
Change in state apportionment rate		(10)	(350)
Change in valuation allowance		4,662	(3,868)
Research and development credit		0	546
True up of prior year foreign tax expense		(108)	0
Other		22	31
Income tax (benefit) expense	$ 103	$ (90)	$ 103