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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 |

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