CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2020	$ 243	$ 308,870	$ 77,956	$ 3,485	$ 390,554
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			23,597		23,597
Changes in other comprehensive loss on investment securities, net of tax				(326)	(326)
Dividends on common stock			(7,349)		(7,349)
Stock option exercises	2	1,524			1,526
Repurchase of restricted stock		(14)			(14)
Stock-based compensation expense		641			641
Balance at Sep. 30, 2021	245	311,021	94,204	3,159	408,629
Balance at Jun. 30, 2021	245	310,735	92,719	3,241	406,940
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	3,939	0	3,939
Changes in other comprehensive loss on investment securities, net of tax	0	0	0	(82)	(82)
Dividends on common stock	0	0	(2,454)	0	(2,454)
Issuance of common stock under Stock Incentive Plan	0	202	0	0	202
Stock-based compensation expense	0	84	0	0	84
Balance at Sep. 30, 2021	245	311,021	94,204	3,159	408,629
Balance at Dec. 31, 2021	245	311,127	99,397	1,112	411,881	[1]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			14,656		14,656
Changes in other comprehensive loss on investment securities, net of tax				(28,572)	(28,572)
Dividends on common stock			(7,387)		(7,387)
Stock option exercises	1	278			279
Repurchase of restricted stock		(8)			(8)
Stock-based compensation expense		959			959
Balance at Sep. 30, 2022	246	312,356	106,666	(27,460)	391,808
Balance at Jun. 30, 2022	246	312,240	104,077	(17,926)	398,637
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	5,054	0	5,054
Changes in other comprehensive loss on investment securities, net of tax	0	0	0	(9,534)	(9,534)
Dividends on common stock	0	0	(2,465)	0	(2,465)
Stock-based compensation expense	0	116	0	0	116
Balance at Sep. 30, 2022	$ 246	$ 312,356	$ 106,666	$ (27,460)	$ 391,808

[1] Derived from audited consolidated financial statements