Income Taxes - Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Computed expected tax expense (benefit)	$ 544	$ (3,665)	$ 1,587
State income tax, net of federal benefit	477	(593)	650
Valuation allowance	15	1,043	(91)
Permanent items	1	5,079	(819)
All other items	4	(598)	(82)
Total income tax expense (benefit)	1,041	1,266	1,245
Income tax expense attributable to operations	$ 1,041	$ 1,266	$ 1,245