LOANS AND ALLOWANCE FOR LOAN LOSSES - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
Total			$ 7,548
Impaired Financing Receivable, Recorded Investment [Abstract]
Total			7,522
Allowance for Loan Losses Allocated			1,147
Amortized Cost Basis
Average recorded investment, total	$ 6,836	$ 10,356
Interest Income Recognized
Total	18	47
Residential Mortgages
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance recorded			767
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance recorded			760
Amortized Cost Basis
With no related allowance recorded	715	895
Interest Income Recognized
With no related allowance recorded	9	11
Construction | Commercial Mortgages
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance recorded			5
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance recorded			5
Amortized Cost Basis
With no related allowance recorded	0	113
Interest Income Recognized
With no related allowance recorded	0	1
Commercial mortgages, other | Commercial Mortgages
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance recorded			4,346
With an allowance recorded			38
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance recorded			4,341
With an allowance recorded			38
Allowance for Loan Losses Allocated			38
Amortized Cost Basis
With no related allowance recorded	4,053	4,105
With an allowance recorded	36	2,601
Interest Income Recognized
With no related allowance recorded	7	7
With an allowance recorded	0	21
Home equity lines and loans | Consumer Loans
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance recorded			154
With an allowance recorded			126
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance recorded			138
With an allowance recorded			127
Allowance for Loan Losses Allocated			31
Amortized Cost Basis
With no related allowance recorded	254	161
With an allowance recorded	0	141
Interest Income Recognized
With no related allowance recorded	0	1
With an allowance recorded	0	0
Commercial and industrial | Commercial and Agricultural
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]
With no related allowance recorded			1,026
With an allowance recorded			1,086
Impaired Financing Receivable, Recorded Investment [Abstract]
With no related allowance recorded			1,025
With an allowance recorded			1,088
Allowance for Loan Losses Allocated			$ 1,078
Amortized Cost Basis
With no related allowance recorded	729	926
With an allowance recorded	1,049	1,414
Interest Income Recognized
With no related allowance recorded	0	3
With an allowance recorded	$ 2	$ 3