Condensed Consolidated Statement of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income
Beginning Balances at Dec. 31, 2020	$ 692,216	$ 362,945	$ 301,419	$ 27,852
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	20,422		20,422
Other comprehensive loss, net of tax	(17,166)			(17,166)
Amortization of unearned compensation	335	335
Exercise of stock options	653	653
Stock option expense	27	27
Net settlement of share awards	(1,347)	(1,347)
Cash dividends on common stock	(5,761)		(5,761)
Ending Balances at Mar. 31, 2021	689,379	362,613	316,080	10,686
Beginning Balances at Dec. 31, 2021	723,209	352,122	363,742	7,345
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	23,563		23,563
Other comprehensive loss, 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 Balances at Mar. 31, 2022	$ 677,450	$ 351,522	$ 380,700	$ (54,772)