Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Preferred stock	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)	Treasury stock	Total stockholders' equity attributable to parent	Noncontrolling interest
Beginning balance (in shares) at Dec. 31, 2019		733	11,995,366				51,077
Beginning balance at Dec. 31, 2019	$ 211,936	$ 7,334	$ 11,995	$ 122,516	$ 72,496	$ (1,321)	$ (1,084)	$ 211,936	$ 0
Increase (Decrease) in Stockholders' Equity
Net income	1,048				1,048			1,048
Other comprehensive loss	(917)					(917)		(917)
Dividends on common stock	(1,076)				(1,076)			(1,076)
Dividends on preferred stock	(114)				(114)			(114)
Stock-based compensation	498			498				498
Common stock options exercised (in shares)			2,500
Common stock options exercised	38		$ 3	35				38
Common stock repurchased (in shares)							16,300
Common stock repurchased	(260)						$ (260)	(260)
Ending balance (in shares) at Mar. 31, 2020		733	11,997,866				(67,377)
Ending balance at Mar. 31, 2020	211,153	$ 7,334	$ 11,998	123,049	72,354	(2,238)	$ (1,344)	211,153	0
Beginning balance (in shares) at Dec. 31, 2019		733	11,995,366				51,077
Beginning balance at Dec. 31, 2019	211,936	$ 7,334	$ 11,995	122,516	72,496	(1,321)	$ (1,084)	211,936	0
Increase (Decrease) in Stockholders' Equity
Net income	19,082
Other comprehensive loss	(872)
Fair value of noncontrolling interests at acquisition date	0
Common stock issued related to acquisition	240
Ending balance (in shares) at Jun. 30, 2020		733	12,065,627				(97,202)
Ending balance at Jun. 30, 2020	228,500	$ 7,334	$ 12,066	123,848	89,197	(2,193)	$ (1,752)	228,500	0
Beginning balance (in shares) at Mar. 31, 2020		733	11,997,866				(67,377)
Beginning balance at Mar. 31, 2020	211,153	$ 7,334	$ 11,998	123,049	72,354	(2,238)	$ (1,344)	211,153	0
Increase (Decrease) in Stockholders' Equity
Net income	18,034				18,034			18,034
Other comprehensive loss	45					45		45
Dividends on common stock	(1,076)				(1,076)			(1,076)
Dividends on preferred stock	(115)				(115)			(115)
Stock-based compensation	627			627				627
Restricted stock units issued (in shares)			48,483				525
Restricted stock units issued	(7)		$ 49	(49)			$ (7)	(7)
Common stock issued related to acquisition (in shares)			19,278
Common stock issued related to acquisition	240		$ 19	221				240
Common stock repurchased (in shares)							29,300
Common stock repurchased	(401)						$ (401)	(401)
Ending balance (in shares) at Jun. 30, 2020		733	12,065,627				(97,202)
Ending balance at Jun. 30, 2020	228,500	$ 7,334	$ 12,066	123,848	89,197	(2,193)	$ (1,752)	228,500	0
Beginning balance (in shares) at Dec. 31, 2020		733	12,374,322				(848,016)
Beginning balance at Dec. 31, 2020	239,483	$ 7,334	$ 12,374	129,119	105,171	2,226	$ (16,741)	239,483	0
Increase (Decrease) in Stockholders' Equity
Net income	8,058				8,085			8,085	(27)
Other comprehensive loss	(4,118)					(4,118)		(4,118)
Dividends on common stock	(1,153)				(1,153)			(1,153)
Dividends on preferred stock	(35)				(35)			(35)
Stock-based compensation	592			592				592
Redemption of preferred stock (in shares)		(733)
Redemption of preferred stock	(7,334)	$ (7,334)						(7,334)
Common stock options exercised (in shares)			52,584
Common stock options exercised	690		$ 53	637				690
Restricted stock units issued (in shares)			11,155
Restricted stock units issued	0		$ 11	(11)
Fair value of noncontrolling interests at acquisition date	500								500
Ending balance (in shares) at Mar. 31, 2021		0	12,438,061				(848,016)
Ending balance at Mar. 31, 2021	236,683	$ 0	$ 12,438	130,337	112,068	(1,892)	$ (16,741)	236,210	473
Beginning balance (in shares) at Dec. 31, 2020		733	12,374,322				(848,016)
Beginning balance at Dec. 31, 2020	239,483	$ 7,334	$ 12,374	129,119	105,171	2,226	$ (16,741)	239,483	0
Increase (Decrease) in Stockholders' Equity
Net income	17,221
Other comprehensive loss	(2,227)
Fair value of noncontrolling interests at acquisition date	900
Common stock issued related to acquisition	600
Ending balance (in shares) at Jun. 30, 2021		0	12,622,075				(848,016)
Ending balance at Jun. 30, 2021	249,400	$ 0	$ 12,622	132,821	119,910	(1)	$ (16,741)	248,611	789
Beginning balance (in shares) at Mar. 31, 2021		0	12,438,061				(848,016)
Beginning balance at Mar. 31, 2021	236,683	$ 0	$ 12,438	130,337	112,068	(1,892)	$ (16,741)	236,210	473
Increase (Decrease) in Stockholders' Equity
Net income	9,163				9,247			9,247	(84)
Other comprehensive loss	1,891					1,891		1,891
Dividends on common stock	(1,405)				(1,405)			(1,405)
Stock-based compensation	692			692				692
Common stock options exercised (in shares)			108,511
Common stock options exercised	1,607		$ 108	1,499				1,607
Restricted stock units issued (in shares)			57,906
Restricted stock units issued	0		$ 58	(58)				0
Minimum tax withholdings on restricted stock units issued	(231)			(231)				(231)
Fair value of noncontrolling interests at acquisition date	400								400
Common stock issued related to acquisition (in shares)			17,597
Common stock issued related to acquisition	600		$ 18	582				600
Ending balance (in shares) at Jun. 30, 2021		0	12,622,075				(848,016)
Ending balance at Jun. 30, 2021	$ 249,400	$ 0	$ 12,622	$ 132,821	$ 119,910	$ (1)	$ (16,741)	$ 248,611	$ 789