Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss), Net of Tax [Member]	Total
Balance at Dec. 31, 2020	$ 89,052	$ 225,507	$ 326,738	$ 13,568	$ 654,865
Balance (in shares) at Dec. 31, 2020	17,810,401
Increase (Decrease) in Stockholders' Equity [Roll forward]
Net income			23,618		23,618
Other comprehensive loss				(10,002)	(10,002)
Cash dividends declared			(6,845)		(6,845)
Issuance of common stock	$ 121	117			238
Issuance of common stock (in shares)	24,163
Issuance of restricted stock	$ 46	(46)			0
Issuance of restricted stock (in shares)	9,193
Vesting of restricted stock	$ (88)	88			0
Vesting of restricted stock (in shares)	(17,681)
Stock-based compensation		195			195
Balance at Mar. 31, 2021	$ 89,131	225,861	343,511	3,566	662,069
Balance (in shares) at Mar. 31, 2021	17,826,076
Balance at Dec. 31, 2021	$ 89,215	227,085	386,750	(4,848)	$ 698,202
Balance (in shares) at Dec. 31, 2021	17,843,081				17,843,081
Increase (Decrease) in Stockholders' Equity [Roll forward]
Net income			19,728		$ 19,728
Other comprehensive loss				(58,137)	(58,137)
Cash dividends declared			(7,131)		(7,131)
Issuance of common stock	$ 163	85			248
Issuance of common stock (in shares)	32,491
Issuance of restricted stock	$ 177	(177)			0
Issuance of restricted stock (in shares)	35,438
Vesting of restricted stock	$ (135)	135			0
Vesting of restricted stock (in shares)	(26,904)
Stock-based compensation		461			461
Balance at Mar. 31, 2022	$ 89,420	$ 227,589	$ 399,347	$ (62,985)	$ 653,371
Balance (in shares) at Mar. 31, 2022	17,884,106				17,884,106