RESTATEMENT OF PREVIOUSLY ISSUED CONSOLIDATED FINANCIAL STATEMENTS - Interim Corrected Consolidated Statements of Financial Condition (Unaudited) (Details) - USD ($)	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Jan. 01, 2023	Dec. 31, 2022	Dec. 31, 2021
ASSETS
Cash and due from banks	$ 17,189,000	$ 27,377,000	$ 14,383,000	$ 11,681,000		$ 10,856,000
Interest bearing deposits with banks	11,741,000	390,000	190,000	222,000		143,000
Cash and cash equivalents	28,930,000	27,767,000	14,573,000	11,903,000		10,999,000
Equity securities	1,073,000	978,000	992,000	1,033,000		1,056,000
Debt securities available for sale	67,564,000	66,527,000	69,098,000	72,485,000		73,536,000
Debt securities held to maturity	200,644,000	202,646,000	205,208,000	207,637,000		209,565,000
Restricted investment in bank stock	1,707,000	2,476,000	2,483,000	3,318,000		3,666,000
Total loans	525,394,000	514,132,000	505,184,000	488,497,000		484,512,000
Less: Allowance for credit losses	(5,677,000)	(5,586,000)	(5,442,000)	(5,374,000)	$ (4,027,000)	(4,027,000)
Total loans, net of allowance for credit losses	519,717,000	508,546,000	499,742,000	483,123,000		480,485,000
Premises and equipment, net	8,180,000	8,131,000	8,211,000	8,092,000		8,190,000
Other real estate owned		39,000
Bank owned life insurance and annuities	14,841,000	14,783,000	14,712,000	15,259,000		15,197,000	$ 16,852,000
Investment in low income housing partnerships	1,154,000	1,234,000	1,315,000	1,395,000		1,507,000
Core deposit and other intangible assets	343,000	368,000	393,000	110,000		121,000
Goodwill	9,812,000	9,812,000	9,871,000	9,047,000		9,047,000
Mortgage servicing rights	83,000	84,000	87,000	90,000		92,000
Deferred tax asset	11,319,000	12,099,000	12,112,000	12,122,000		11,968,000
Accrued interest receivable and other assets	5,188,000	5,922,000	5,408,000	4,767,000		4,190,000
Total assets	870,555,000	861,412,000	844,205,000	830,381,000		829,619,000
Deposits:
Non-interest bearing	197,027,000	200,619,000	195,300,000	200,044,000		199,131,000
Interest bearing	552,018,000	556,823,000	544,677,000	524,214,000		512,381,000
Total deposits	749,045,000	757,442,000	739,977,000	724,258,000		711,512,000
Short-term borrowings and repurchase agreements	52,810,000	39,638,000	41,827,000	42,822,000		55,710,000
Long-term debt	20,000,000	20,000,000	20,000,000	20,000,000		20,000,000
Other interest bearing liabilities	951,000	941,000	1,006,000	986,000		1,011,000
Accrued interest payable and other liabilities	7,612,000	6,512,000	5,650,000	6,042,000		5,693,000
Total liabilities	830,418,000	824,533,000	808,460,000	794,108,000		793,926,000
Stockholders' Equity:
Preferred stock	0					0
Common stock	5,151,000	5,151,000	5,151,000	5,151,000		5,151,000
Surplus	24,924,000	24,887,000	24,852,000	24,823,000		24,986,000
Retained earnings	51,297,000	50,722,000	50,035,000	49,739,000		49,961,000
Accumulated other comprehensive loss	(38,640,000)	(41,601,000)	(42,013,000)	(41,088,000)		(41,867,000)
Cost of common stock in Treasury:	2,595,000	2,280,000	2,280,000	2,352,000		2,538,000
Total stockholders' equity	40,137,000	36,879,000	35,745,000	36,273,000		35,693,000	71,290,000
Total liabilities and stockholders' equity	870,555,000	861,412,000	844,205,000	830,381,000		829,619,000
Commitments and contingent liabilities
As Previously Reported
ASSETS
Cash and due from banks		27,377,000	14,383,000	11,681,000
Interest bearing deposits with banks		390,000	190,000	222,000
Cash and cash equivalents		27,767,000	14,573,000	11,903,000
Equity securities		978,000	992,000	1,033,000
Debt securities available for sale		66,527,000	69,098,000	72,485,000
Debt securities held to maturity		202,646,000	205,208,000	207,637,000
Restricted investment in bank stock		2,476,000	2,483,000	3,318,000
Total loans		514,132,000	505,184,000	488,497,000
Less: Allowance for credit losses		(5,586,000)	(5,442,000)	(5,374,000)
Total loans, net of allowance for credit losses		508,546,000	499,742,000	483,123,000
Premises and equipment, net		8,131,000	8,211,000	8,092,000
Other real estate owned		39,000
Bank owned life insurance and annuities		14,783,000	14,712,000	15,259,000
Investment in low income housing partnerships		1,234,000	1,315,000	1,395,000
Core deposit and other intangible assets		368,000	393,000	110,000
Goodwill		9,812,000	9,871,000	9,047,000
Mortgage servicing rights		84,000	87,000	90,000
Deferred tax asset	11,319,000	12,099,000	12,112,000	12,122,000		11,838,000
Accrued interest receivable and other assets	6,444,000	7,178,000	6,664,000	6,023,000		5,576,000
Total assets	871,811,000	862,668,000	845,461,000	831,637,000		830,875,000
Deposits:
Non-interest bearing		200,619,000	195,300,000	200,044,000
Interest bearing		556,823,000	544,677,000	524,214,000
Total deposits		757,442,000	739,977,000	724,258,000
Short-term borrowings and repurchase agreements		39,638,000	41,827,000	42,822,000
Long-term debt		20,000,000	20,000,000	20,000,000
Other interest bearing liabilities		941,000	1,006,000	986,000
Accrued interest payable and other liabilities		6,512,000	5,650,000	6,042,000
Total liabilities		824,533,000	808,460,000	794,108,000
Stockholders' Equity:
Common stock		5,151,000	5,151,000	5,151,000
Surplus		24,887,000	24,852,000	24,823,000
Retained earnings	52,553,000	51,978,000	51,291,000	50,995,000		51,217,000
Accumulated other comprehensive loss		(41,601,000)	(42,013,000)	(41,088,000)
Cost of common stock in Treasury:		2,280,000	2,280,000	2,352,000
Total stockholders' equity	41,393,000	38,135,000	37,001,000	37,529,000		36,949,000	$ 71,290,000
Total liabilities and stockholders' equity	871,811,000	862,668,000	845,461,000	831,637,000		830,875,000
Error Correction
ASSETS
Deferred tax asset						130,000
Accrued interest receivable and other assets	(1,256,000)	(1,256,000)	(1,256,000)	(1,256,000)		(1,386,000)
Total assets	(1,256,000)	(1,256,000)	(1,256,000)	(1,256,000)		(1,256,000)
Stockholders' Equity:
Retained earnings	(1,256,000)	(1,256,000)	(1,256,000)	(1,256,000)		(1,256,000)
Total stockholders' equity	(1,256,000)	(1,256,000)	(1,256,000)	(1,256,000)		(1,256,000)
Total liabilities and stockholders' equity	$ (1,256,000)	$ (1,256,000)	$ (1,256,000)	$ (1,256,000)		$ (1,256,000)