Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2021	$ 723,209	$ 0	$ 0	$ 352,122	$ 363,742	$ 7,345
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	23,563				23,563
Other comprehensive (loss) income, net of tax	(62,117)					(62,117)
Amortization of unearned compensation	516			516
Exercise of stock options	94			94
Stock option expense	13			13
Net settlement of share awards	(1,671)			(1,671)
Stock retirement plans	448			448
Cash dividends on common stock	(6,605)				(6,605)
Ending balance at Mar. 31, 2022	677,450	0	0	351,522	380,700	(54,772)
Beginning balance at Dec. 31, 2022	677,375	0	0	354,188	429,385	(106,198)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	18,228				18,228
Other comprehensive (loss) income, net of tax	14,166					14,166
Amortization of unearned compensation	758			758
Net settlement of share awards	(696)			(696)
Stock retirement plans	(215)			(215)
Cash dividends on common stock	(7,057)				(7,057)
Ending balance at Mar. 31, 2023	$ 702,559	$ 0	$ 0	$ 354,035	$ 440,556	$ (92,032)