Stock Compensation Plans, Information on Stock Options (Details) - Stock Options [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Stock options, additional disclosures [Abstract]
Options exercised, number of shares (in shares)	10,168
Options exercised, weighted average exercise price (in dollars per share)	$ 3.15
Options exercised, aggregate intrinsic value	$ 63	$ 122
Stock options outstanding and expected to vest, number of shares (in shares)	627,845
Stock options outstanding and expected to vest, weighted average exercise price (in dollars per share)	$ 8.58
Stock options outstanding and expected to vest, aggregate intrinsic value	$ 901
Stock options outstanding and expected to vest, weighted average remaining contractual term	5 years 9 months 29 days
Stock options vested and currently exercisable, number of shares (in shares)	414,439
Stock options vested and currently exercisable, weighted average exercise price (in dollars per share)	$ 7.82
Stock options vested and currently exercisable, aggregate intrinsic value	$ 884
Stock options vested and currently exercisable, weighted average remaining contractual term	4 years 10 months 6 days
Weighted average fair value per share of options granted (in dollars per share)	$ 0	$ 1.28
Fair value of awards vested	$ 182	$ 149
Exercise price range, lower range limit (in dollars per share)	$ 3.35
Exercise price range, upper range limit (in dollars per share)	$ 10.72
Unrecognized compensation related to non-vested stock options	$ 176
Unrecognized compensation cost, period for recognition	1 year 9 months 18 days
Recognized compensation cost	$ 145	$ 181