RESTATEMENT OF PREVIOUSLY ISSUED CONSOLIDATED FINANCIAL STATEMENTS - Interim Corrected Consolidated Statements of Stockholders' Equity (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			12 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Prior Period Adjustments and Restatements
Beginning balance	$ 35,745	$ 36,273	$ 35,693	$ 35,693	$ 71,290
Beginning balance, shares	5,018,129	5,013,899	5,003,059	5,003,059
Net Income (Loss)	$ 1,791	$ 1,398	$ 1,733	$ 6,596	7,064
Other comprehensive income (loss)	412	(925)	779	3,227	(38,502)
Cash dividends	(1,104)	(1,102)	(1,101)	(4,406)	(4,401)
Stock-based compensation	35	39	32	(143)	(176)
Purchase of treasury stock			(9)	$ (324)	$ (3)
Purchase of treasury stock, shares				(27,569)	(170)
Treasury stock issued for stock plans		62		$ 62	$ 69
Ending balance	$ 36,879	$ 35,745	$ 36,273	$ 40,137	$ 35,693
Ending balance, shares	5,018,129	5,018,129	5,013,899	4,991,129	5,003,059
Cash Dividends per share	$ 0.22	$ 0.22	$ 0.22	$ 0.88	$ 0.88
Common Stock
Prior Period Adjustments and Restatements
Beginning balance	$ 5,151	$ 5,151	$ 5,151	$ 5,151	$ 5,151
Beginning balance, shares	5,018,129	5,013,899	5,003,059	5,003,059	4,988,542
Purchase of treasury stock, shares			(569)	(27,569)	(995)
Treasury stock issued for stock plans, shares		4,230	11,409	15,639	15,512
Ending balance	$ 5,151	$ 5,151	$ 5,151	$ 5,151	$ 5,151
Ending balance, shares	5,018,129	5,018,129	5,013,899	4,991,129	5,003,059
Surplus
Prior Period Adjustments and Restatements
Beginning balance	$ 24,852	$ 24,823	$ 24,986	$ 24,986	$ 25,008
Stock-based compensation	35	39	32	(143)	(176)
Treasury stock issued for stock plans		(10)	(195)	(205)	(198)
Ending balance	24,887	24,852	24,823	24,924	24,986
Retained Earnings
Prior Period Adjustments and Restatements
Beginning balance	50,035	49,739	49,961	49,961	47,298
Net Income (Loss)	1,791	1,398	1,733	6,596	7,064
Cash dividends	(1,104)	(1,102)	(1,101)	(4,406)	(4,401)
Ending balance	50,722	50,035	49,739	51,297	49,961
Accumulated Other Comprehensive Income (Loss)
Prior Period Adjustments and Restatements
Beginning balance	(42,013)	(41,088)	(41,867)	(41,867)	(3,365)
Other comprehensive income (loss)	412	(925)	779	3,227	(38,502)
Ending balance	(41,601)	(42,013)	(41,088)	(38,640)	(41,867)
Treasury Stock
Prior Period Adjustments and Restatements
Beginning balance	(2,280)	(2,352)	(2,538)	(2,538)	(2,802)
Purchase of treasury stock			(9)	(324)	(3)
Treasury stock issued for stock plans		72	195	267	267
Ending balance	(2,280)	(2,280)	(2,352)	(2,595)	(2,538)
Cumulative effect of change in accounting principle
Prior Period Adjustments and Restatements
Beginning balance			(854)	(854)
Ending balance					(854)
Cumulative effect of change in accounting principle | Retained Earnings
Prior Period Adjustments and Restatements
Beginning balance			(854)	(854)
Ending balance					(854)
As Previously Reported
Prior Period Adjustments and Restatements
Beginning balance	37,001	37,529	36,949	36,949	71,290
Net Income (Loss)	1,791	1,398	1,733	6,596	8,320
Other comprehensive income (loss)	412	(925)	779	3,227	(38,502)
Cash dividends	(1,104)	(1,102)	(1,101)	(4,406)	(4,401)
Stock-based compensation	35	39	32	(143)	(176)
Purchase of treasury stock			(9)	(324)	(3)
Treasury stock issued for stock plans		62		62	69
Ending balance	$ 38,135	$ 37,001	$ 37,529	41,393	36,949
Cash Dividends per share	$ 0.22	$ 0.22	$ 0.22
As Previously Reported | Common Stock
Prior Period Adjustments and Restatements
Beginning balance	$ 5,151	$ 5,151	$ 5,151	$ 5,151
Beginning balance, shares	5,018,129	5,013,899	5,003,059	5,003,059
Purchase of treasury stock, shares			(569)
Treasury stock issued for stock plans, shares		4,230	11,409
Ending balance	$ 5,151	$ 5,151	$ 5,151		$ 5,151
Ending balance, shares	5,018,129	5,018,129	5,013,899		5,003,059
As Previously Reported | Surplus
Prior Period Adjustments and Restatements
Beginning balance	$ 24,852	$ 24,823	$ 24,986	$ 24,986
Stock-based compensation	35	39	32
Treasury stock issued for stock plans		(10)	(195)
Ending balance	24,887	24,852	24,823		$ 24,986
As Previously Reported | Retained Earnings
Prior Period Adjustments and Restatements
Beginning balance	51,291	50,995	51,217	51,217
Net Income (Loss)	1,791	1,398	1,733
Cash dividends	(1,104)	(1,102)	(1,101)
Ending balance	51,978	51,291	50,995		51,217
As Previously Reported | Accumulated Other Comprehensive Income (Loss)
Prior Period Adjustments and Restatements
Beginning balance	(42,013)	(41,088)	(41,867)	(41,867)
Other comprehensive income (loss)	412	(925)	779
Ending balance	(41,601)	(42,013)	(41,088)		(41,867)
As Previously Reported | Treasury Stock
Prior Period Adjustments and Restatements
Beginning balance	(2,280)	(2,352)	(2,538)	(2,538)
Purchase of treasury stock			(9)
Treasury stock issued for stock plans		72	195
Ending balance	(2,280)	(2,280)	(2,352)		(2,538)
As Previously Reported | Cumulative effect of change in accounting principle
Prior Period Adjustments and Restatements
Beginning balance			(854)	(854)
Ending balance					(854)
As Previously Reported | Cumulative effect of change in accounting principle | Retained Earnings
Prior Period Adjustments and Restatements
Beginning balance			(854)	(854)
Ending balance					(854)
Adjustment
Prior Period Adjustments and Restatements
Beginning balance	(1,256)	(1,256)	(1,256)	(1,256)
Net Income (Loss)					(1,256)
Ending balance	(1,256)	(1,256)	(1,256)	(1,256)	(1,256)
Adjustment | Retained Earnings
Prior Period Adjustments and Restatements
Beginning balance	(1,256)	(1,256)	(1,256)	$ (1,256)
Ending balance	$ (1,256)	$ (1,256)	$ (1,256)		$ (1,256)