CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2021	$ 4,389	$ 78,395	$ 146,010	$ (155)	$ (16,147)	$ 212,492
Balance (in shares) at Dec. 31, 2021	4,388,901
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			21,185			21,185
Net other comprehensive income (loss)				(35,700)		(35,700)
Stock dividend	$ 39	2,521				0
Stock dividend			(2,560)
Stock dividend (in shares)	38,786
Purchase of treasury stock					(1,279)	(1,279)
Restricted stock, executive and Board of Director awards		(221)			365	144
Restricted stock vesting		158				158
Sale of treasury stock to employees		6			106	112
Forfeited restricted stock		10			(10)	0
Cash dividends			(5,682)			(5,682)
Balance at Sep. 30, 2022	$ 4,428	80,869	158,953	(35,855)	(16,965)	191,430
Balance (in shares) at Sep. 30, 2022	4,427,687
Balance at Jun. 30, 2022	$ 4,428	80,892	153,315	(26,559)	(17,044)	195,032
Balance (in shares) at Jun. 30, 2022	4,427,687
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			7,544			7,544
Net other comprehensive income (loss)				(9,296)		(9,296)
Purchase of treasury stock					0	0
Restricted stock, executive and Board of Director awards		(52)			52	0
Restricted stock vesting		16				16
Sale of treasury stock to employees		5			35	40
Forfeited restricted stock		8			(8)	0
Cash dividends			(1,906)			(1,906)
Balance at Sep. 30, 2022	$ 4,428	80,869	158,953	(35,855)	(16,965)	191,430
Balance (in shares) at Sep. 30, 2022	4,427,687
Balance at Dec. 31, 2022	$ 4,428	80,911	164,922	(33,141)	(16,973)	200,147
Balance (in shares) at Dec. 31, 2022	4,427,687
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			10,271			10,271
Net other comprehensive income (loss)				(3,502)		(3,502)
Stock dividend	$ 39	2,982				0
Stock dividend			(3,021)
Stock dividend (in shares)	39,209
Issuance of Common stock	$ 694	59,443				60,137
Issuance of Common stock (in shares)	693,858
Purchase of treasury stock					(264)	(264)
Restricted stock, executive and Board of Director awards		(231)			348	117
Restricted stock vesting		184				184
Sale of treasury stock to employees		0			28	28
Forfeited restricted stock		13			(13)	0
Cash dividends			(6,198)			(6,198)
Balance at Sep. 30, 2023	$ 5,161	143,302	167,740	(36,643)	(16,874)	262,686
Balance (ASU 2016-13 [Member]) at Sep. 30, 2023			1,766	0		1,766
Balance (in shares) at Sep. 30, 2023	5,160,754
Balance at Jun. 30, 2023	$ 5,161	143,351	162,499	(30,980)	(16,803)	263,228
Balance (in shares) at Jun. 30, 2023	5,160,754
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			7,548			7,548
Net other comprehensive income (loss)				(5,663)		(5,663)
Purchase of treasury stock					(264)	(264)
Restricted stock, executive and Board of Director awards		(86)			168	82
Restricted stock vesting		34			0	34
Sale of treasury stock to employees		0			28	28
Forfeited restricted stock		3			(3)	0
Cash dividends			(2,307)			(2,307)
Balance at Sep. 30, 2023	$ 5,161	$ 143,302	167,740	(36,643)	$ (16,874)	262,686
Balance (ASU 2016-13 [Member]) at Sep. 30, 2023			$ 1,766	$ 0		$ 1,766
Balance (in shares) at Sep. 30, 2023	5,160,754