Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock	Surplus	Retained Earnings Impact of adopting ASC 326	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Impact of adopting ASC 326	Total
Beginning balance at Dec. 31, 2022	$ 5,151	$ 24,986		$ 49,961	$ (41,867)	$ (2,538)		$ 35,693
Beginning balance, shares at Dec. 31, 2022	5,003,059
Net income				1,733				1,733
Other comprehensive income					779			779
Cash dividends at $0.22 per share				(1,101)				(1,101)
Stock-based compensation		32						32
Purchase of treasury stock						(9)		(9)
Purchase of treasury stock, shares	(569)
Treasury stock issued for stock plans		(195)				195
Treasury stock issued for stock plans, shares	11,409
Ending balance at Mar. 31, 2023	$ 5,151	24,823	$ (854)	49,739	(41,088)	(2,352)	$ (854)	36,273
Ending balance, shares at Mar. 31, 2023	5,013,899
Beginning balance at Dec. 31, 2023	$ 5,151	24,924		51,297	(38,640)	(2,595)		$ 40,137
Beginning balance, shares at Dec. 31, 2023	4,991,129							4,991,129
Net income				1,355				$ 1,355
Other comprehensive income					1,057			1,057
Cash dividends at $0.22 per share				(1,098)				(1,098)
Stock-based compensation		34						34
Purchase of treasury stock						(3)		(3)
Purchase of treasury stock, shares	(239)
Treasury stock issued for stock plans		(156)				156
Treasury stock issued for stock plans, shares	9,628
Ending balance at Mar. 31, 2024	$ 5,151	$ 24,802		$ 51,554	$ (37,583)	$ (2,442)		$ 41,482
Ending balance, shares at Mar. 31, 2024	5,000,518							5,000,518