Consolidated Statements Of Changes In Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member] Impact of Adoption, Adjustment [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Impact of Adoption, Adjustment [Member]	Total
Balance at Dec. 31, 2021	$ 4,711	$ 43,085		$ 116,612	$ (547)	$ (6,796)		$ 157,065
Balance, shares at Dec. 31, 2021	4,441,443
Net income				6,590				6,590
Other comprehensive income					(38,443)			(38,443)
Cash dividends declared				(2,848)				(2,848)
Acquisition of treasury stock						$ (1,461)		(1,461)
Acquisition of treasury stock, shares						(48,040)
Treasury shares issued under dividend reinvestment plan		128				$ 521		649
Treasury shares issued under dividend reinvestment plan, shares						20,512
Stock Compensation Plans:
Treasury shares issued		(186)				$ 210		24
Treasury shares issued, shares						8,365
Compensation expense		221						221
Balance at Jun. 30, 2022	$ 4,711	43,248		120,354	(38,990)	$ (7,526)		121,797
Balance, shares at Jun. 30, 2022	4,422,280
Balance at Mar. 31, 2022	$ 4,711	43,077		118,203	(22,444)	(6,411)		137,136
Balance, shares at Mar. 31, 2022	4,456,918
Net income				3,578				3,578
Other comprehensive income					(16,546)			(16,546)
Cash dividends declared				(1,427)				(1,427)
Acquisition of treasury stock						$ (1,441)		(1,441)
Acquisition of treasury stock, shares						(47,431)
Treasury shares issued under dividend reinvestment plan		49				$ 284		333
Treasury shares issued under dividend reinvestment plan, shares						11,133
Stock Compensation Plans:
Treasury shares issued		(30)				$ 42		12
Treasury shares issued, shares						1,660
Compensation expense		152						152
Balance at Jun. 30, 2022	$ 4,711	43,248		120,354	(38,990)	$ (7,526)		121,797
Balance, shares at Jun. 30, 2022	4,422,280
Balance (Accounting Standards Update 2016-13 [Member]) at Dec. 31, 2022			$ 98				$ 98
Balance at Dec. 31, 2022	$ 4,711	43,535		125,892	(51,287)	(8,654)		$ 114,197
Balance, shares at Dec. 31, 2022	4,390,397							4,390,397
Net income				6,268				$ 6,268
Other comprehensive income					3,326			3,326
Cash dividends declared				(2,806)				(2,806)
Acquisition of treasury stock						$ (2,394)		(2,394)
Acquisition of treasury stock, shares						(84,414)
Treasury shares issued under dividend reinvestment plan		32				$ 779		811
Treasury shares issued under dividend reinvestment plan, shares						28,679
Stock Compensation Plans:
Treasury shares issued		(398)				$ 415		17
Treasury shares issued, shares						15,326
Compensation expense		253						253
Balance at Jun. 30, 2023	$ 4,711	43,422		129,452	(47,961)	$ (9,854)		$ 119,770
Balance, shares at Jun. 30, 2023	4,349,988							4,349,988
Balance at Mar. 31, 2023	$ 4,711	43,356		127,877	(43,996)	(8,365)		$ 123,583
Balance, shares at Mar. 31, 2023	4,402,675
Net income				2,976				2,976
Other comprehensive income					(3,965)			(3,965)
Cash dividends declared				(1,401)				(1,401)
Acquisition of treasury stock						$ (2,078)		(2,078)
Acquisition of treasury stock, shares						(74,306)
Treasury shares issued under dividend reinvestment plan		(17)				$ 550		533
Treasury shares issued under dividend reinvestment plan, shares						20,195
Stock Compensation Plans:
Treasury shares issued		(35)				$ 39		4
Treasury shares issued, shares						1,424
Compensation expense		118						118
Balance at Jun. 30, 2023	$ 4,711	$ 43,422		$ 129,452	$ (47,961)	$ (9,854)		$ 119,770
Balance, shares at Jun. 30, 2023	4,349,988							4,349,988