CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (unaudited) - USD ($) $ in Thousands	Total	Impact of adopting ASC 326	Common Stock	Retained Earnings	Retained Earnings Impact of adopting ASC 326	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Total Stockholders’ Equity	Total Stockholders’ Equity Impact of adopting ASC 326	Noncontrolling Interest
Beginning balance (in shares) at Dec. 31, 2020			25,239,748
Beginning balance at Dec. 31, 2020	$ 657,184	$ (6,951)	$ 114,927	$ 529,005	$ (6,951)	$ 27,744	$ (14,581)	$ 657,095	$ (6,951)	$ 89
Accounting standards update	ASU 2016-13
Net income	$ 22,983			22,983				22,983
Net current period other comprehensive income (loss)	(12,634)					(12,634)		(12,634)
Cash dividends declared and paid, $0.34 per share	(8,647)			(8,647)				(8,647)
Treasury shares purchased under deferred directors' plan (in shares)			(3,634)
Treasury shares purchased under deferred directors' plan	0		$ 219				(219)
Treasury shares sold and distributed under deferred directors' plan (in shares)			5,664
Treasury shares sold and distributed under deferred directors' plan			$ (115)				115
Stock activity under equity compensation plans (in shares)			49,130
Stock activity under equity compensation plans	(1,648)		$ (1,648)					(1,648)
Stock based compensation expense	1,381		$ 1,381					1,381
Ending balance (in shares) at Mar. 31, 2021			25,290,908
Ending balance at Mar. 31, 2021	651,668		$ 114,764	536,390		15,110	(14,685)	651,579		89
Beginning balance (in shares) at Dec. 31, 2021			25,300,793
Beginning balance at Dec. 31, 2021	704,906		$ 120,615	583,134		16,093	(15,025)	704,817		89
Net income	23,642			23,642				23,642
Net current period other comprehensive income (loss)	(109,780)					(109,780)		(109,780)
Cash dividends declared and paid, $0.34 per share	(10,198)			(10,198)				(10,198)
Treasury shares purchased under deferred directors' plan (in shares)			(2,587)
Treasury shares purchased under deferred directors' plan	0		$ 212				(212)
Treasury shares sold and distributed under deferred directors' plan (in shares)			8,555
Treasury shares sold and distributed under deferred directors' plan	0		$ (221)				221
Stock activity under equity compensation plans (in shares)			39,388
Stock activity under equity compensation plans	(1,728)		$ (1,728)					(1,728)
Stock based compensation expense	2,260		$ 2,260					2,260
Ending balance (in shares) at Mar. 31, 2022			25,346,149
Ending balance at Mar. 31, 2022	$ 609,102		$ 121,138	$ 596,578		$ (93,687)	$ (15,016)	$ 609,013		$ 89