CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Receivables, allowance for credit loss	$ 175	$ 150
Preferred stock, percentage non-cumulative (as a percent)	5.00%	5.00%
Preferred stock, par value (in USD per share)	$ 10	$ 10
Preferred stock, shares authorized (in shares)	1,000	1,000
Preferred stock, shares issued (in shares)	437	437
Preferred stock, shares outstanding (in shares)	437	437
Common stock, par value (in US dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	40,000,000	40,000,000
Common stock, shares issued (in shares)	23,125,166	23,125,166
Common stock, shares outstanding (in shares)	21,985,100	21,964,314
Treasury stock (in shares)	1,140,066	1,160,852