CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Shares outstanding			18,926,810
Common stock options exercised, shares			8,400
Issuance of shares for Employee Stock Purchase Plan, shares	5,598	0	52,533	18,740
Shares outstanding	18,924,953		18,924,953
Common Stock [Member]
Shares outstanding	18,905,135	19,456,312	18,926,810	19,337,662
Restricted stock units issued, shares			157,690	131,141
Restricted stock units/awards repurchased on vesting to pay taxes, shares			(39,686)	(35,949)
Cash dividends declared on common stock, per share	$ 0.05	$ 0.05	$ 0.15	$ 0.15
Share repurchase, share		(595,853)	(220,222)	(595,853)
Common stock options exercised, shares		140	8,400	1,660
Common stock options exercised, used to exercise, shares			2,149
Common stock options exercised, net of shares used to exercise, shares			6,251
Exercise of warrants, shares			20,000	7,109
Exercise of warrants, used to exercise, shares			13,469	4,218
Exercise of warrants, net of shares used to exercise, shares			6,531	2,891
Issuance of shares for Employee Stock Purchase Plan, shares	5,598		52,533	18,740
Issuance of common stock for acquisition, shares	14,220	138,642	35,046	138,949
Shares outstanding	18,924,953	18,999,241	18,924,953	18,999,241