Stock Compensation - Schedule of Stock Options and Stock Appreciation Rights (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Number of Share Underlying Awards
Outstanding, beginning of the period (in shares)	800,000	808,000
Granted (in shares)	1,098,000	0
Exercised (in shares)	0	0
Forfeited or expired (in shares)	(398,000)	(8,000)
Outstanding, ending of the period (in shares)	1,500,000	800,000	808,000
Exercisable, ending balance (in shares)	360,000	573,000
Vested and expected to vest, ending balance (in shares)	1,500,000	800,000
Weighted-Average Exercise Price
Outstanding, beginning balance (in dollars per share)	$ 6.47	$ 6.44
Granted (in dollars per share)	1.52	0
Exercised (in dollars per share)	0	0
Forfeited or expired (in dollars per share)	4.91	3.34
Outstanding, ending balance (in dollars per share)	3.62	6.47	$ 6.44
Exercisable (in dollars per share)	8.56	7.43
Vested and expected to vest, ending balance (in dollars per share)	$ 3.62	$ 6.47
Weighted-Average Remaining Contractual Term (years)
Outstanding	8 years 4 months 2 days	6 years 8 months 1 day	7 years 8 months 8 days
Granted	9 years 5 months 23 days	0 years
Exercised	0 years	0 years
Forfeited or expired	5 years 11 months 23 days	9 years 5 months 4 days
Exercisable, ending balance	5 years 1 month 24 days	6 years 1 month 9 days
Vested and expected to vest, ending balance	8 years 4 months 2 days	6 years 8 months 1 day
Weighted-Average Remaining Contractual Term (years)
Exercised	0 years	0 years
Forfeited or expired	0 years	5 years 5 months 1 day
Stock appreciation rights (SAR)
Number of Awards
Outstanding, beginning of the period (in shares)	48,000	84,000
Granted (in shares)	0	0
Exercised (in shares)	0	0
Forfeited or expired (in shares)	0	(36,000)
Outstanding, end of the period (in shares)	48,000	48,000	84,000
Exercisable end of the period (in shares)	48,000	48,000
Vested and expected to vest end of the period (in shares)	48,000	48,000
Weighted-Average Exercise Price
Outstanding, beginning balance (in dollars per share)	$ 12.00	$ 8.90
Granted (in dollars per share)	0	0
Exercised (in dollars per shares)	0	0
Forfeited or expired (in dollars per share)	0	10.32
Outstanding, ending balance (in dollars per share)	12.00	12.00	$ 8.90
Exercisable, ending balance (in dollars per share)	12.00	12.00
Vested and expected to vest, ending balance (in dollars per share)	$ 12.00	$ 12.00
Weighted-Average Remaining Contractual Term (years)
Outstanding	3 years 8 months 8 days	4 years 8 months 8 days	6 years
Granted	0 years	0 years
Exercisable	3 years 8 months 8 days	4 years 8 months 8 days
Vested and expected to vest	3 years 8 months 8 days	4 years 8 months 8 days