Consolidated Statements Of Changes In Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2020	$ 4,711	$ 42,589	$ 102,520	$ 3,190	$ (7,834)	$ 145,176
Balance, shares at Dec. 31, 2020	4,389,355
Net income			15,963			15,963
Other comprehensive loss				(5,363)		(5,363)
Cash dividends declared			(4,105)			(4,105)
Acquisition of treasury stock					$ (1,105)	(1,105)
Acquisition of treasury stock, shares					(35,718)
Treasury shares issued under dividend reinvestment plan		381			$ 1,630	2,011
Treasury shares issued under dividend reinvestment plan, shares					66,235
Stock Compensation Plans:
Treasury shares issued		(182)			$ 282	100
Treasury shares issued, shares					11,575
Compensation expense		161				161
Balance at Sep. 30, 2021	$ 4,711	42,949	114,378	(2,173)	$ (7,027)	152,838
Balance, shares at Sep. 30, 2021	4,431,447
Balance at Jun. 30, 2021	$ 4,711	42,774	109,930	844	(7,103)	151,156
Balance, shares at Jun. 30, 2021	4,425,092
Net income			5,862			5,862
Other comprehensive loss				(3,017)		(3,017)
Cash dividends declared			(1,414)			(1,414)
Acquisition of treasury stock					$ (387)	(387)
Acquisition of treasury stock, shares					(12,089)
Treasury shares issued under dividend reinvestment plan		129			$ 458	587
Treasury shares issued under dividend reinvestment plan, shares					18,226
Stock Compensation Plans:
Treasury shares issued					$ 5	5
Treasury shares issued, shares					218
Compensation expense		46				46
Balance at Sep. 30, 2021	$ 4,711	42,949	114,378	(2,173)	$ (7,027)	152,838
Balance, shares at Sep. 30, 2021	4,431,447
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					4,441,443
Net income			11,221			$ 11,221
Other comprehensive loss				(54,554)		(54,554)
Cash dividends declared			(4,254)			(4,254)
Acquisition of treasury stock					$ (2,664)	(2,664)
Acquisition of treasury stock, shares					(86,449)
Treasury shares issued under dividend reinvestment plan		176			$ 766	942
Treasury shares issued under dividend reinvestment plan, shares					29,757
Stock Compensation Plans:
Treasury shares issued		(236)			$ 279	43
Treasury shares issued, shares					10,899
Compensation expense		352				352
Balance at Sep. 30, 2022	$ 4,711	43,377	123,579	(55,101)	$ (8,415)	$ 108,151
Balance, shares at Sep. 30, 2022	4,395,650					4,395,650
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
Net income			4,631			4,631
Other comprehensive loss				(16,111)		(16,111)
Cash dividends declared			(1,406)			(1,406)
Acquisition of treasury stock					$ (1,202)	(1,202)
Acquisition of treasury stock, shares					(38,409)
Treasury shares issued under dividend reinvestment plan		49			$ 246	295
Treasury shares issued under dividend reinvestment plan, shares					9,245
Stock Compensation Plans:
Treasury shares issued		(51)			$ 67	16
Treasury shares issued, shares					2,534
Compensation expense		131				131
Balance at Sep. 30, 2022	$ 4,711	$ 43,377	$ 123,579	$ (55,101)	$ (8,415)	$ 108,151
Balance, shares at Sep. 30, 2022	4,395,650					4,395,650