Income Taxes - Reconciliation of Expected Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Computed “expected” tax (benefit) expense	$ (3,639)	$ (6,629)	$ 3,197
(Decrease) increase in income taxes resulting from:
State income taxes	(2,848)	1,634	1,219
Return-to-provision	(7,613)	(340)	0
Change in fair value of contingent earnout shares	(1,782)	2,066	0
Permanently non-deductible transaction costs	485	2,079	0
Officer's compensation	0	1,991	0
Other permanent items	220	(16)	(264)
Enacted rate change	(6)	0	0
Other	905	(9)	270
Total income tax (benefit) expense	$ (16,918)	$ 5,199	$ 4,422