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ALLOWANCE FOR CREDIT LOSSES - LOANS - Allowance for credit losses by loan portfolio segment (Details) - USD ($) | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Jan. 01, 2023 | Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | $ 15,053,000 | $ 15,053,000 | $ 10,743,000 | $ 12,398,000 | $ 11,947,000 | $ 11,345,000
Charge-Offs |  | (3,641,000) | (1,849,000) | (294,000) |  |
Recoveries |  | 184,000 | 144,000 | 247,000 |  |
Provision (Credit) |  | 6,563,000 | 50,000 | 1,100,000 |  |
ASU 2016-13 |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | 1,200,000 | 1,200,000 |  |  | 1,200,000 |
Impact of adopting ASU 2016-13 | ASU 2016-13 |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | (1,204,000) | (1,204,000) |  |  |  |
Other commercial and industrial |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | 3,030,000 | 3,030,000 |  |  | 2,908,000 |
Charge-Offs |  | (480,000) |  |  |  |
Recoveries |  | 3,000 |  |  |  |
Provision (Credit) |  | 599,000 |  |  |  |
Other commercial and industrial | Impact of adopting ASU 2016-13 | ASU 2016-13 |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | (2,908,000) | (2,908,000) |  |  |  |
Other commercial real estate (non-owner occupied) |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | 3,428,000 | 3,428,000 |  |  | 3,196,000 |
Charge-Offs | (804,000) |  |  |  |  |
Residential mortgage |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | 1,021,000 | 1,021,000 | 1,380,000 | 1,590,000 | 1,025,000 |
Charge-Offs |  | (54,000) | (28,000) |  |  |
Recoveries |  | 14,000 | 19,000 |  |  |
Provision (Credit) |  | 36,000 | (201,000) |  |  |
Residential mortgage | Impact of adopting ASU 2016-13 | ASU 2016-13 |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | 355,000 | 355,000 |  |  |  |
Allocation for general risk |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans |  |  | 653,000 | 1,232,000 |  | 1,093,000
Charge-Offs |  | 0 |  |  |  |
Provision (Credit) |  |  | (579,000) | 139,000 |  |
Allocation for general risk | Impact of adopting ASU 2016-13 | ASU 2016-13 |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | 653,000 | 653,000 |  |  |  |
Commercial |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Charge-Offs |  | (3,312,000) |  |  |  |
Commercial | Commercial |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans |  |  | 2,653,000 | 3,071,000 |  | 3,472,000
Charge-Offs |  |  | (97,000) | (146,000) |  |
Recoveries |  |  | 4,000 | 89,000 |  |
Provision (Credit) |  |  | (325,000) | (344,000) |  |
Commercial | Commercial real estate (owner occupied) |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | 1,529,000 | 1,529,000 |  |  | 1,380,000 |
Charge-Offs |  | 0 |  |  |  |
Recoveries |  | 24,000 |  |  |  |
Provision (Credit) |  | 125,000 |  |  |  |
Commercial | Commercial real estate (owner occupied) | Impact of adopting ASU 2016-13 | ASU 2016-13 |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | (1,380,000) | (1,380,000) |  |  |  |
Commercial | Other commercial and industrial |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | 3,030,000 | 3,030,000 |  |  |  |
Charge-Offs | (405,000) | (480,000) |  |  |  |
Commercial | Commercial real estate (non-owner occupied) |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans |  |  | 5,972,000 | 6,392,000 |  | 5,373,000
Charge-Offs |  |  | (1,390,000) |  |  |
Recoveries |  |  | 54,000 | 51,000 |  |
Provision (Credit) |  |  | 916,000 | 968,000 |  |
Commercial | Commercial real estate (non-owner occupied) - retail |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | 3,488,000 | 3,488,000 |  |  | 1,432,000 |
Charge-Offs |  | (2,028,000) |  |  |  |
Provision (Credit) |  | 4,084,000 |  |  |  |
Commercial | Commercial real estate (non-owner occupied) - retail | Impact of adopting ASU 2016-13 | ASU 2016-13 |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | (1,432,000) | (1,432,000) |  |  |  |
Commercial | Commercial real estate (non-owner occupied) - multi-family |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | 1,430,000 | 1,430,000 |  |  | 1,226,000 |
Charge-Offs |  | 0 |  |  |  |
Recoveries |  | 6,000 |  |  |  |
Provision (Credit) |  | 198,000 |  |  |  |
Commercial | Commercial real estate (non-owner occupied) - multi-family | Impact of adopting ASU 2016-13 | ASU 2016-13 |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | (1,226,000) | (1,226,000) |  |  |  |
Commercial | Other commercial real estate (non-owner occupied) |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | 3,428,000 | 3,428,000 | 5,972,000 |  |  |
Charge-Offs |  | (804,000) |  |  |  |
Recoveries |  | 14,000 |  |  |  |
Provision (Credit) |  | 1,022,000 |  |  |  |
Commercial | Other commercial real estate (non-owner occupied) | Impact of adopting ASU 2016-13 | ASU 2016-13 |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | 2,776,000 | 2,776,000 |  |  |  |
Commercial | Commercial (owner occupied real estate and other) |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans |  |  | 2,653,000 |  |  |
Charge-Offs |  | 0 |  |  |  |
Commercial | Commercial (owner occupied real estate and other) | Impact of adopting ASU 2016-13 | ASU 2016-13 |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | 2,653,000 | 2,653,000 |  |  |  |
Consumer |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Charge-Offs |  | (329,000) |  |  |  |
Consumer | Commercial real estate (non-owner occupied) - retail |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | 3,488,000 | 3,488,000 |  |  |  |
Consumer | Commercial real estate (non-owner occupied) - multi-family |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | 1,430,000 | 1,430,000 |  |  |  |
Consumer | Residential mortgage |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans |  |  | 1,380,000 | 1,590,000 |  | 1,292,000
Charge-Offs |  | (54,000) |  | (17,000) |  |
Recoveries |  |  |  | 49,000 |  |
Provision (Credit) |  |  |  | 266,000 |  |
Consumer | Consumer |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | 1,127,000 | 1,127,000 | 85,000 | 113,000 | $ 780,000 | $ 115,000
Charge-Offs |  | (275,000) | (334,000) | (131,000) |  |
Recoveries |  | 123,000 | 67,000 | 58,000 |  |
Provision (Credit) |  | 499,000 | $ 239,000 | $ 71,000 |  |
Consumer | Consumer | Impact of adopting ASU 2016-13 | ASU 2016-13 |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for credit losses - Loans | $ (695,000) | $ (695,000) |  |  |  |

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