CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (unaudited) - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect, Period of Adoption, Adjusted Balance	Total Stockholders’ Equity	Total Stockholders’ Equity Cumulative Effect, Period of Adoption, Adjustment	Total Stockholders’ Equity Cumulative Effect, Period of Adoption, Adjusted Balance	Common Stock	Common Stock Cumulative Effect, Period of Adoption, Adjusted Balance	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings Cumulative Effect, Period of Adoption, Adjusted Balance	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Cumulative Effect, Period of Adoption, Adjusted Balance	Treasury Stock	Treasury Stock Cumulative Effect, Period of Adoption, Adjusted Balance	Noncontrolling Interest	Noncontrolling Interest Cumulative Effect, Period of Adoption, Adjusted Balance
Beginning balance (in shares) at Dec. 31, 2022							25,349,225
Beginning balance at Dec. 31, 2022	$ 568,887			$ 568,798			$ 127,004		$ 646,100			$ (188,923)		$ (15,383)		$ 89
Increase (Decrease) in Stockholders' Equity
Net income	24,278			24,278					24,278
Other comprehensive income (loss), net of tax	21,553			21,553								21,553
Cash dividends declared and paid	(11,749)			(11,749)					(11,749)
Treasury shares purchased under deferred directors' plan (in shares)							(2,800)
Treasury shares purchased under deferred directors' plan							$ 204							(204)
Treasury shares sold and distributed under deferred directors' plan (in shares)							12,855
Treasury shares sold and distributed under deferred directors' plan							$ (405)							405
Stock activity under equity compensation plans (in shares)							71,637
Stock activity under equity compensation plans	(3,124)			(3,124)			$ (3,124)
Stock based compensation expense	2,161			2,161			$ 2,161
Ending balance (in shares) at Mar. 31, 2023							25,430,917
Ending balance at Mar. 31, 2023	602,006			601,917			$ 125,840		658,629			(167,370)		(15,182)		89
Beginning balance (in shares) at Dec. 31, 2022							25,349,225
Beginning balance at Dec. 31, 2022	$ 568,887			568,798			$ 127,004		646,100			(188,923)		(15,383)		89
Increase (Decrease) in Stockholders' Equity
Accounting standards update	Accounting Standards Update 2023-02 [Member]
Ending balance (in shares) at Dec. 31, 2023	25,430,566						25,430,566	25,430,566
Ending balance at Dec. 31, 2023	$ 649,793	$ (532)	$ 649,261	649,704	$ (532)	$ 649,172	$ 127,692	$ 127,692	692,760	$ (532)	$ 692,228	(155,195)	$ (155,195)	(15,553)	$ (15,553)	89	$ 89
Increase (Decrease) in Stockholders' Equity
Net income	23,401			23,401					23,401
Other comprehensive income (loss), net of tax	(11,718)			(11,718)								(11,718)
Cash dividends declared and paid	(12,299)			(12,299)					(12,299)
Treasury shares purchased under deferred directors' plan (in shares)							(3,230)
Treasury shares purchased under deferred directors' plan							$ 208							(208)
Treasury shares sold and distributed under deferred directors' plan (in shares)							13,275
Treasury shares sold and distributed under deferred directors' plan							$ (391)							391
Stock activity under equity compensation plans (in shares)							62,814
Stock activity under equity compensation plans	(2,516)			(2,516)			$ (2,516)
Stock based compensation expense	$ 880			880			$ 880
Ending balance (in shares) at Mar. 31, 2024	25,503,425						25,503,425
Ending balance at Mar. 31, 2024	$ 647,009			$ 646,920			$ 125,873		$ 703,330			$ (166,913)		$ (15,370)		$ 89