LOANS AND ALLOWANCE FOR CREDIT LOSSES - Additional Information (Details)	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2024 USD ($) loan item	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) item loan	Dec. 31, 2023 USD ($) loan
Loans Receivable Held-for-sale, Amount	$ 305,000		$ 305,000	$ 214,000
Unpaid principal balance	922,494,000	$ 871,239,000	$ 922,494,000	911,078,000
Loan payments of delinquency period			10 days
Delinquency notice is automatically generated			10 or 15
Loan Payments, Delinquency Period, Beyond Which Loans are Considered Non-Accrual			90 days
Reserve for unfunded lending commitments	196,000	260,000	$ 196,000	166,000
Accrued interest exclude from the amortized cost basis of loans	2,650,000		2,650,000	2,476,000
Foreclosed Assets Held For Resale	0		0	0
Consumer Mortgage Loans Secured by Residential Real Estate in Process of Foreclosure	137,000		137,000	$ 138,000
Financing Receivable, Modifications, Recorded Investment	$ 9,455,000		9,455,000
Financing Receivable, Modifications, Unfunded Commitments			0
Modified value of TDR			$ 9,455,000
Number of TDRs not in compliance with restructure | item	0		0
Number of financing receivable modified | loan	0		0	0
Recorded Investment			$ 9,455,000	$ 0
Impaired Financing Receivable, Interest Income, Accrual Method		4,000
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 9,455,000
Number of loans modified as troubled debt restructuring within previous 12 months, with subsequent payment default | item	0		0
GGLs
Unpaid principal balance	$ 4,380,000		$ 4,380,000	4,470,000
Unfunded Loan Commitment
Reserve for unfunded lending commitments	196,000		$ 196,000	166,000
Home Equity Line of Credit | Home Equity Term Loans | Maximum
Term of loan offering			20 years
Commercial and Industrial
Unpaid principal balance	64,959,000	61,313,000	$ 64,959,000	66,909,000
Reserve for unfunded lending commitments	36,000	35,000	36,000	25,000
Commercial and Industrial | GGLs
Government Guaranteed Loans.	4,380,000		4,380,000	4,470,000
Political Subdivision Loans
Tax free loans	26,078,000		26,078,000	26,181,000
Commercial Real Estate
Loans Receivable Held-for-sale, Amount	305,000		305,000	214,000
Modified value of TDR			9,455,000
Recorded Investment			9,455,000
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 9,455,000
Commercial Real Estate | Maximum
Term of loan offering			20 years
Maximum loan to value ratio			80.00%
Residential Real Estate
Loans Receivable Held-for-sale, Amount	$ 305,000		$ 305,000	214,000
Residential Real Estate | Maximum
Term of loan offering			20 years
Residential Real Estate | Home Equity Term Loans | Maximum
Term of loan offering			15 years
Residential Real Estate | Residential Mortgage
Maximum loan to value ratio with PMI	95.00%		95.00%
Residential Real Estate | Residential Mortgage | Originated For Resale
Loans held for sale term	30 years		30 years
Residential Real Estate | Residential Mortgage | Originated For Resale | Maximum
Term of loan offering			30 years
Maximum loan to value ratio			80.00%
Residential Real Estate | Home Equity Loan | Maximum
Maximum loan to value ratio			80.00%
Residential Real Estate | Home Equity Line of Credit | Maximum
Maximum loan to value ratio			80.00%
Consumer
Unpaid principal balance	$ 6,250,000	6,129,000	$ 6,250,000	5,824,000
Agricultural
Unpaid principal balance	$ 990,000	$ 862,000	$ 990,000	$ 671,000
Agricultural | Maximum
Term of loan offering			10 years
Maximum loan to value ratio			70.00%