FAIR VALUE MEASUREMENTS AND FAIR VALUES OF FINANCIAL INSTRUMENTS - Assets Measured at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Assets Measured at Fair Value
Total, fair value	$ 408,422	$ 415,755
Interest rate swap agreements
Assets Measured at Fair Value
Fair value derivative asset	1,991	2,783
Fair value of the derivative liability	1,991	2,783
RPA In
Assets Measured at Fair Value
Fair value derivative asset	0	0
Fair value of the derivative liability	9	13
Obligations of the U.S. Treasury
Assets Measured at Fair Value
Total, fair value	7,321	11,290
Obligations of U.S. Government agencies
Assets Measured at Fair Value
Total, fair value	9,376	9,946
Bank holding company debt securities
Assets Measured at Fair Value
Total, fair value	23,949	23,500
Obligations Of States And Political Subdivisions Tax Exempt
Assets Measured at Fair Value
Total, fair value	104,936	104,199
Obligations Of States And Political Subdivisions Taxable
Assets Measured at Fair Value
Total, fair value	48,434	50,111
Residential Passthrough Securities
Assets Measured at Fair Value
Total, fair value	94,053	95,405
Residential Collateralized Mortgage Obligations
Assets Measured at Fair Value
Total, fair value	45,601	46,462
Commercial Mortgage Backed Securities
Assets Measured at Fair Value
Total, fair value	66,390	66,682
Private label commercial mortgage-backed securities
Assets Measured at Fair Value
Total, fair value	8,362	8,160
Recurring fair value measurements
Assets Measured at Fair Value
Total, fair value	408,422	415,755
Marketable equity security	889	871
Servicing rights	2,682	2,659
Total asset fair value measurements	413,992	422,079
Fair value of the derivative liability	2,000	2,796
Recurring fair value measurements | Level 1
Assets Measured at Fair Value
Total, fair value	7,321	11,290
Marketable equity security	889	871
Servicing rights	0	0
Total asset fair value measurements	8,210	12,161
Fair value of the derivative liability	0	0
Recurring fair value measurements | Level 2
Assets Measured at Fair Value
Total, fair value	401,101	404,465
Marketable equity security	0	0
Servicing rights	0	0
Total asset fair value measurements	403,100	407,259
Fair value of the derivative liability	2,000	2,796
Recurring fair value measurements | Level 3
Assets Measured at Fair Value
Total, fair value	0	0
Marketable equity security	0	0
Servicing rights	2,682	2,659
Total asset fair value measurements	2,682	2,659
Fair value of the derivative liability	0	0
Recurring fair value measurements | RPA Out
Assets Measured at Fair Value
Fair value derivative asset	8	11
Recurring fair value measurements | RPA Out | Level 1
Assets Measured at Fair Value
Fair value derivative asset	0	0
Recurring fair value measurements | RPA Out | Level 2
Assets Measured at Fair Value
Fair value derivative asset	8	11
Recurring fair value measurements | RPA Out | Level 3
Assets Measured at Fair Value
Fair value derivative asset	0	0
Recurring fair value measurements | Interest rate swap agreements
Assets Measured at Fair Value
Fair value derivative asset	1,991	2,783
Fair value of the derivative liability	1,991	2,783
Recurring fair value measurements | Interest rate swap agreements | Level 1
Assets Measured at Fair Value
Fair value derivative asset	0	0
Fair value of the derivative liability	0	0
Recurring fair value measurements | Interest rate swap agreements | Level 2
Assets Measured at Fair Value
Fair value derivative asset	1,991	2,783
Fair value of the derivative liability	1,991	2,783
Recurring fair value measurements | Interest rate swap agreements | Level 3
Assets Measured at Fair Value
Fair value derivative asset	0	0
Fair value of the derivative liability	0	0
Recurring fair value measurements | RPA In
Assets Measured at Fair Value
Fair value of the derivative liability	9	13
Recurring fair value measurements | RPA In | Level 1
Assets Measured at Fair Value
Fair value of the derivative liability	0	0
Recurring fair value measurements | RPA In | Level 2
Assets Measured at Fair Value
Fair value of the derivative liability	9	13
Recurring fair value measurements | RPA In | Level 3
Assets Measured at Fair Value
Fair value of the derivative liability	0	0
Recurring fair value measurements | Obligations of the U.S. Treasury
Assets Measured at Fair Value
Total, fair value	7,321	11,290
Recurring fair value measurements | Obligations of the U.S. Treasury | Level 1
Assets Measured at Fair Value
Total, fair value	7,321	11,290
Recurring fair value measurements | Obligations of the U.S. Treasury | Level 2
Assets Measured at Fair Value
Total, fair value	0	0
Recurring fair value measurements | Obligations of the U.S. Treasury | Level 3
Assets Measured at Fair Value
Total, fair value	0	0
Recurring fair value measurements | Obligations of U.S. Government agencies
Assets Measured at Fair Value
Total, fair value	9,376	9,946
Recurring fair value measurements | Obligations of U.S. Government agencies | Level 1
Assets Measured at Fair Value
Total, fair value	0	0
Recurring fair value measurements | Obligations of U.S. Government agencies | Level 2
Assets Measured at Fair Value
Total, fair value	9,376	9,946
Recurring fair value measurements | Obligations of U.S. Government agencies | Level 3
Assets Measured at Fair Value
Total, fair value	0	0
Recurring fair value measurements | Bank holding company debt securities
Assets Measured at Fair Value
Total, fair value	23,949	23,500
Recurring fair value measurements | Bank holding company debt securities | Level 1
Assets Measured at Fair Value
Total, fair value	0	0
Recurring fair value measurements | Bank holding company debt securities | Level 2
Assets Measured at Fair Value
Total, fair value	23,949	23,500
Recurring fair value measurements | Bank holding company debt securities | Level 3
Assets Measured at Fair Value
Total, fair value	0	0
Recurring fair value measurements | Obligations Of States And Political Subdivisions Tax Exempt
Assets Measured at Fair Value
Total, fair value	104,936	104,199
Recurring fair value measurements | Obligations Of States And Political Subdivisions Tax Exempt | Level 1
Assets Measured at Fair Value
Total, fair value	0	0
Recurring fair value measurements | Obligations Of States And Political Subdivisions Tax Exempt | Level 2
Assets Measured at Fair Value
Total, fair value	104,936	104,199
Recurring fair value measurements | Obligations Of States And Political Subdivisions Tax Exempt | Level 3
Assets Measured at Fair Value
Total, fair value	0	0
Recurring fair value measurements | Obligations Of States And Political Subdivisions Taxable
Assets Measured at Fair Value
Total, fair value	48,434	50,111
Recurring fair value measurements | Obligations Of States And Political Subdivisions Taxable | Level 1
Assets Measured at Fair Value
Total, fair value	0	0
Recurring fair value measurements | Obligations Of States And Political Subdivisions Taxable | Level 2
Assets Measured at Fair Value
Total, fair value	48,434	50,111
Recurring fair value measurements | Obligations Of States And Political Subdivisions Taxable | Level 3
Assets Measured at Fair Value
Total, fair value	0	0
Recurring fair value measurements | Residential Passthrough Securities
Assets Measured at Fair Value
Total, fair value	94,053	95,405
Recurring fair value measurements | Residential Passthrough Securities | Level 1
Assets Measured at Fair Value
Total, fair value	0	0
Recurring fair value measurements | Residential Passthrough Securities | Level 2
Assets Measured at Fair Value
Total, fair value	94,053	95,405
Recurring fair value measurements | Residential Passthrough Securities | Level 3
Assets Measured at Fair Value
Total, fair value	0	0
Recurring fair value measurements | Residential Collateralized Mortgage Obligations
Assets Measured at Fair Value
Total, fair value	45,601	46,462
Recurring fair value measurements | Residential Collateralized Mortgage Obligations | Level 1
Assets Measured at Fair Value
Total, fair value	0	0
Recurring fair value measurements | Residential Collateralized Mortgage Obligations | Level 2
Assets Measured at Fair Value
Total, fair value	45,601	46,462
Recurring fair value measurements | Residential Collateralized Mortgage Obligations | Level 3
Assets Measured at Fair Value
Total, fair value	0	0
Recurring fair value measurements | Commercial Mortgage Backed Securities
Assets Measured at Fair Value
Total, fair value	66,390	66,682
Recurring fair value measurements | Commercial Mortgage Backed Securities | Level 1
Assets Measured at Fair Value
Total, fair value	0	0
Recurring fair value measurements | Commercial Mortgage Backed Securities | Level 2
Assets Measured at Fair Value
Total, fair value	66,390	66,682
Recurring fair value measurements | Commercial Mortgage Backed Securities | Level 3
Assets Measured at Fair Value
Total, fair value	0	0
Recurring fair value measurements | Private label commercial mortgage-backed securities
Assets Measured at Fair Value
Total, fair value	8,362	8,160
Recurring fair value measurements | Private label commercial mortgage-backed securities | Level 1
Assets Measured at Fair Value
Total, fair value	0	0
Recurring fair value measurements | Private label commercial mortgage-backed securities | Level 2
Assets Measured at Fair Value
Total, fair value	8,362	8,160
Recurring fair value measurements | Private label commercial mortgage-backed securities | Level 3
Assets Measured at Fair Value
Total, fair value	0	0
Nonrecurring fair value measurements
Assets Measured at Fair Value
Total asset fair value measurements	1,630	7,521
Impaired loans, net	1,449	7,043
Foreclosed assets held for sale	181	478
Nonrecurring fair value measurements | Level 1
Assets Measured at Fair Value
Total asset fair value measurements	0	0
Impaired loans, net	0	0
Foreclosed assets held for sale	0	0
Nonrecurring fair value measurements | Level 2
Assets Measured at Fair Value
Total asset fair value measurements	0	0
Impaired loans, net	0	0
Foreclosed assets held for sale	0	0
Nonrecurring fair value measurements | Level 3
Assets Measured at Fair Value
Total asset fair value measurements	1,630	7,521
Impaired loans, net	1,449	7,043
Foreclosed assets held for sale	$ 181	$ 478