CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Shares outstanding	18,974,703
Common stock options exercised and related tax benefits, shares	16,640
Issuance of shares for Employee Stock Purchase Plan, shares	26,693	56,849	18,740
Share repurchase, share	(894,744)	(220,222)	(739,778)
Shares outstanding	18,393,888	18,974,703
Common Stock [Member]
Shares outstanding	18,974,703	18,926,810	19,337,662
Restricted stock units issued, shares	301,626	170,575	144,026
Restricted stock units/awards repurchased on vesting to pay taxes, shares	(76,187)	(43,935)	(40,197)
Cash dividends declared on common stock, per share	$ 0.20	$ 0.20	$ 0.20
Common stock options exercised and related tax benefits, shares	16,640	19,860	18,660
Common stock options exercised, used to exercise, shares	258	2,149
Common stock options exercised, net of shares used to exercise, shares	16,382	17,711
Issuance of shares for Employee Stock Purchase Plan, shares	26,693	56,849	18,740
Share repurchase, share	(894,744)	(220,222)	(739,778)
Issuance of common stock for acquisition, shares	23,981	60,384	184,806
Exercise of warrants, shares	60,000	20,000	7,109
Exercise of warrants, used to exercise, shares	38,566	13,469	4,218
Exercise of warrants, net of shares used to exercise, shares	21,434	6,531	2,891
Shares outstanding	18,393,888	18,974,703	18,926,810