Income Taxes - Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Computed expected tax expense (benefit)	$ 1,587	$ (584)	$ 1,190
State income tax, net of federal benefit	650	636	108
Valuation allowance	(91)	(392)	(1,512)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount	0	0	(9,737)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	(819)	1,067	0
All other items	(82)	(205)	304
Federal Income Tax Expense (Benefit), Continuing Operations	1,245	522	(9,647)
Income tax expense (benefit) attributable to operations	$ 1,245	$ 522	$ (9,647)