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LOANS AND ALLOWANCE FOR LOAN LOSSES - Impaired Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Unpaid Principal Balance |  |  |  |  |
Unpaid principal balance, total | $ 18,800 |  | $ 18,800 |  | $ 16,546
Recorded Investment |  |  |  |  |
Recorded investment, total | 12,217 |  | 12,217 |  | 10,589
Allowance for Loan Losses Allocated | 3,398 |  | 3,398 |  | 1,527
Average Recorded Investment |  |  |  |  |
Average recorded investment, total | 12,672 | $ 16,049 | 11,464 | $ 15,715 |
Interest Income Recognized |  |  |  |  |
Interest income, accrual method, total | 55 | 23 | 96 | 50 |
Commercial and agricultural: | Commercial and industrial |  |  |  |  |
Unpaid Principal Balance |  |  |  |  |
With no related allowance, unpaid principal balance | 995 |  | 995 |  | 1,960
With related allowance, unpaid principal balance | 5,487 |  | 5,487 |  | 5,228
Recorded Investment |  |  |  |  |
With no related allowance, recorded investment | 970 |  | 970 |  | 1,963
With related allowance, recorded investment | 1,612 |  | 1,612 |  | 1,437
Allowance for Loan Losses Allocated | 1,525 |  | 1,525 |  | 1,401
Average Recorded Investment |  |  |  |  |
With no related allowance, average recorded investment | 1,378 | 1,239 | 1,645 | 679 |
With related allowance, average recorded investment | 1,545 | 5,804 | 1,511 | 5,867 |
Interest Income Recognized |  |  |  |  |
With no related allowance, interest income, accrual method | 3 | 2 | 3 | 2 |
With related allowance, interest income, accrual method | 4 | 2 | 6 | 4 |
Commercial mortgages: | Construction |  |  |  |  |
Unpaid Principal Balance |  |  |  |  |
With no related allowance, unpaid principal balance | 143 |  | 143 |  | 188
Recorded Investment |  |  |  |  |
With no related allowance, recorded investment | 143 |  | 143 |  | 189
Average Recorded Investment |  |  |  |  |
With no related allowance, average recorded investment | 151 | 213 | 167 | 226 |
Interest Income Recognized |  |  |  |  |
With no related allowance, interest income, accrual method | 1 | 2 | 5 | 6 |
Commercial mortgages: | Commercial mortgages, other |  |  |  |  |
Unpaid Principal Balance |  |  |  |  |
With no related allowance, unpaid principal balance | 7,312 |  | 7,312 |  | 6,814
With related allowance, unpaid principal balance | 3,554 |  | 3,554 |  | 258
Recorded Investment |  |  |  |  |
With no related allowance, recorded investment | 4,651 |  | 4,651 |  | 4,760
With related allowance, recorded investment | 3,562 |  | 3,562 |  | 168
Allowance for Loan Losses Allocated | 1,800 |  | 1,800 |  | 74
Average Recorded Investment |  |  |  |  |
With no related allowance, average recorded investment | 4,665 | 4,515 | 4,743 | 3,938 |
With related allowance, average recorded investment | 3,644 | 2,229 | 1,905 | 3,645 |
Interest Income Recognized |  |  |  |  |
With no related allowance, interest income, accrual method | 8 | 0 | 23 | 0 |
With related allowance, interest income, accrual method | 25 | 8 | 25 | 16 |
Residential mortgages |  |  |  |  |
Unpaid Principal Balance |  |  |  |  |
With no related allowance, unpaid principal balance | 960 |  | 960 |  | 1,283
Recorded Investment |  |  |  |  |
With no related allowance, recorded investment | 946 |  | 946 |  | 1,271
Average Recorded Investment |  |  |  |  |
With no related allowance, average recorded investment | 950 | 1,224 | 1,034 | 873 |
Interest Income Recognized |  |  |  |  |
With no related allowance, interest income, accrual method | 12 | 7 | 29 | 17 |
Consumer loans: | Home equity lines and loans |  |  |  |  |
Unpaid Principal Balance |  |  |  |  |
With no related allowance, unpaid principal balance | 195 |  | 195 |  | 645
With related allowance, unpaid principal balance | 154 |  | 154 |  | 170
Recorded Investment |  |  |  |  |
With no related allowance, recorded investment | 179 |  | 179 |  | 631
With related allowance, recorded investment | 154 |  | 154 |  | 170
Allowance for Loan Losses Allocated | 73 |  | 73 |  | $ 52
Average Recorded Investment |  |  |  |  |
With no related allowance, average recorded investment | 184 | 650 | 299 | 399 |
With related allowance, average recorded investment | 155 | 175 | 160 | 88 |
Interest Income Recognized |  |  |  |  |
With no related allowance, interest income, accrual method | 2 | 2 | 5 | 5 |
With related allowance, interest income, accrual method | $ 0 | $ 0 | $ 0 | $ 0 |

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