Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Revision of Prior Period, Accounting Standards Update, Adjustment	Previously Reported	Common Stock	Common Stock Previously Reported	Capital Surplus	Capital Surplus Previously Reported	Retained Earnings	Retained Earnings Revision of Prior Period, Accounting Standards Update, Adjustment	Retained Earnings Previously Reported	Treasury Stock	Treasury Stock Previously Reported	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Previously Reported
Beginning Balance at Dec. 31, 2021	$ 681,105			$ 47,619		$ 170,942		$ 641,826			$ (193,542)		$ 14,260
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	21,342							21,342
Other comprehensive income (loss)	(58,974)												(58,974)
Cash dividends declared	(9,030)							(9,030)
Stock-based compensation expense	971					971
Restricted awards granted	0					(1,707)					1,707
Purchase of treasury shares	(2,984)										(2,984)
Ending balance at Mar. 31, 2022	632,430			47,619		170,206		654,138			(194,819)		(44,714)
Beginning Balance at Dec. 31, 2022	578,027	$ 175	$ 577,852	47,619	$ 47,619	170,980	$ 170,980	706,871	$ 175	$ 706,696	(215,955)	$ (215,955)	(131,488)	$ (131,488)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	24,341							24,341
Other comprehensive income (loss)	15,099												15,099
Cash dividends declared	(9,485)							(9,485)
Stock-based compensation expense	1,093					1,093
Restricted awards granted	0					(2,118)					2,118
Purchase of treasury shares	(20,103)										(20,103)
Acquisition of Citizens Commerce Bancshares, Inc.	62,078					7,574					54,504
Ending balance at Mar. 31, 2023	$ 651,050			$ 47,619		$ 177,529		$ 721,727			$ (179,436)		$ (116,389)