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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Collateral Dependent (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Mar. 31, 2025 | Dec. 31, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | --- | --- | --- | --- | ---
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Amortized Cost Basis | $ 4,981 |  | $ 6,471 |  |  |
Related Allowance | 22,665 | $ 22,522 | 21,388 | $ 21,031 | $ 20,471 | $ 22,517
Commercial and Industrial |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Amortized Cost Basis | 861 |  | 1,512 |  |  |
Related Allowance | 4,524 | 5,153 | 4,520 | 4,894 | 4,516 | 5,055
Commercial Mortgages |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Amortized Cost Basis | 3,767 |  | 4,959 |  |  |
Related Allowance | 12,714 | 12,089 | 11,214 | 10,530 | 10,367 | 12,026
Consumer Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Amortized Cost Basis | 353 |  | 0 |  |  |
Related Allowance | 2,830 | $ 2,807 | 3,395 | $ 3,501 | $ 3,526 | $ 3,242
Collateral Pledged |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Amortized Cost Basis | 4,172 |  | 5,089 |  |  |
Related Allowance | 158 |  | 171 |  |  |
Commercial Real Estate And Business Assets | Commercial and Industrial | Commercial and industrial |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Amortized Cost Basis | 52 |  | 130 |  |  |
Related Allowance | 0 |  | 65 |  |  |
Commercial Real Estate and Residential Real Estate | Commercial Mortgages | Owner occupied commercial real estate |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Amortized Cost Basis | 1,307 |  | 1,377 |  |  |
Related Allowance | 9 |  | 15 |  |  |
Commercial Real Estate and Residential Real Estate | Commercial Mortgages | Non-owner occupied commercial real estate |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Amortized Cost Basis | 2,460 |  | 3,582 |  |  |
Related Allowance | 149 |  | 91 |  |  |
Residential Real Estate | Consumer Loans | Home equity lines and loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Amortized Cost Basis | 353 |  | 0 |  |  |
Related Allowance | $ 0 |  | $ 0 |  |  |

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