CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS EQUITY - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Retained Earnings	Retained Earnings Cumulative-Effect Adjustment (ASU 2016-01)	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Cumulative-Effect Adjustment (ASU 2016-01)
Beginning balance at Dec. 31, 2018	$ 650,672	$ 10,438	$ 361	$ 546,849	$ 102,522			$ (9,498)
Beginning balance, shares at Dec. 31, 2018		10,438	36,343,239
Net income	57,002				57,002
Other comprehensive income (loss), net of tax	10,238							10,238
Issuance of common stock upon exercise of stock options	3,146		$ 2	3,144
Issuance of common stock upon exercise of stock options, shares			241,211
Issuance of common stock and stock options due to business combination, net of issuance costs	28,735		$ 15	28,720
Issuance of common stock and stock options due to business combination, net of issuance costs, shares			1,464,558
Restricted stock activity			$ 1	(1)
Restricted stock activity, shares			180,664
Issuance of common stock in connection with employee stock purchase plan	580			580
Issuance of common stock in connection with employee stock purchase plan, shares			26,828
Cash dividends declared on preferred stock	(783)				(783)
Cash dividends declared on common stock	(1,148)				(1,148)
Share-based compensation expense	1,673			1,673
Ending balance at Dec. 31, 2019	750,115	$ 10,438	$ 379	580,965	159,033	$ 1,440		(700)	$ (1,440)
Ending balance, shares at Dec. 31, 2019		10,438	38,256,500
Net income	37,467				37,467
Other comprehensive income (loss), net of tax	18,747							18,747
Issuance of common stock upon exercise of stock options	3,089		$ 3	3,086
Issuance of common stock upon exercise of stock options, shares			275,111
Restricted stock activity	1			(1)
Restricted stock activity, shares			168,150
Issuance of common stock in connection with employee stock purchase plan	537		$ 1	536
Issuance of common stock in connection with employee stock purchase plan, shares			36,779
Cash dividends declared on preferred stock	(783)				(783)
Cash dividends declared on common stock	(4,619)				(4,619)
Repurchases of common stock	(1,668)						$ (1,668)
Repurchase of common stock, shares			118,486
Share-based compensation expense	2,579			2,579
Ending balance at Dec. 31, 2020	$ 805,464	$ 10,438	$ 384	587,165	191,098		(1,668)	18,047
Ending balance, shares at Dec. 31, 2020		10,438	38,618,054
Accounting Standards Update [Extensible List]	ASU 2016-01
Net income	$ 92,785				92,785
Other comprehensive income (loss), net of tax	(26,349)							(26,349)
Issuance of common stock upon exercise of stock options	1,456		$ 1	1,355			100
Issuance of common stock upon exercise of stock options, shares			115,897
Restricted stock activity	(1,135)		$ 1	(1)			(1,135)
Restricted stock activity, shares			258,458
Issuance of common stock in connection with employee stock purchase plan	1,217		$ 1	1,216
Issuance of common stock in connection with employee stock purchase plan, shares			53,202
Cash dividends declared on preferred stock	(783)				(783)
Cash dividends declared on common stock	(11,424)				(11,424)
Repurchases of common stock	$ (28,867)						(28,867)
Repurchase of common stock, shares	1,331,708		1,331,708
Share-based compensation expense	$ 4,018			4,018
Ending balance at Dec. 31, 2021	$ 836,382	$ 10,438	$ 387	$ 593,753	$ 271,676		$ (31,570)	$ (8,302)
Ending balance, shares at Dec. 31, 2021		10,438	37,713,903