Stock-Based Compensation - Share Appreciation Rights (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Payment Arrangement [Abstract]
Stock options outstanding (in shares)	131,253	222,273	291,779	319,086
Stock options outstanding (in dollars per share)	$ 16.91	$ 15.44	$ 14.05	$ 13.53
SARS outstanding (in shares)	0	0	32,282	42,152
SARs outstanding (in dollars per share)	$ 0	$ 0	$ 15.40	$ 14.14
Stock options granted (in shares)	(57,721)	(30,401)	(11,055)
Stock options granted (in dollars per share)	$ 7.74	$ 5.57	$ 5.57
SARs granted (in shares)	0	0	0
SARs granted (in dollars per share)	$ 0	$ 0	$ 0
Stock options exercised (in shares)	(16,455)	(39,105)	(11,519)
Stock options exercised (in dollars per share)	$ 18.45	$ 12.77	$ 9.31
SARs exercised (in shares)	0	0	0
SARs exercised (in dollars per share)	$ 0	$ 0	$ 0
Stock options canceled/forfeited (in shares)			(4,733)
Stock options canceled/forfeited (in dollars per share)			$ 10.00
SARs canceled/forfeited (in shares)			(9,870)
SARs canceled/forfeited (in dollars per share)			$ 10.00
Stock options expired (in shares)	(16,844)	0
Stock options expired (in dollars per share)	$ 27.45	$ 0
SARs expired (in shares)	0	(32,282)
SARS expired (in dollars per share)	$ 0	$ 15.40