Stock-Based Compensation - Schedule of SAR Activity (Details) - SARs - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Shares
Outstanding, beginning balance (in shares)	175,570	130,070
Granted (in shares)	0	50,000
Exercised (in shares)	0	0
Forfeited (in shares)	0	0
Expired (in shares)	(45,050)	(4,500)
Outstanding, ending balance (in shares)	130,520	175,570	130,070
Exercisable (in shares)	111,853	119,569
Weighted-Average Exercise Price
Outstanding, beginning balance (in dollars per share)	$ 8.06	$ 9.41
Granted (in dollars per share)	4.83	4.83
Exercised (in dollars per share)	0	0
Forfeited (in dollars per share)	0	0
Expired (in dollars per share)	8.60	11.25
Outstanding, ending balance (in dollars per share)	7.87	8.06	$ 9.41
Exercisable (in dollars per share)	$ 8.32	$ 9.00
Weighted-Average Remaining Contractual Term (years)
Outstanding (in years)	6 years 2 months 4 days	7 years 14 days	7 years 2 months 15 days
Exercisable (in years)	5 years 10 months 28 days	6 years 5 months 15 days
Aggregate Intrinsic Value (in thousands)
Outstanding	$ 0	$ 0	$ 11
Exercisable	$ 0	$ 0