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ALLOWANCE FOR CREDIT LOSSES - Amortized Cost Basis of Individually Analyzed Collateral Dependent Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Jun. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022
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Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Loans HFI, at amortized cost, gross | $ 956,004 |  | $ 824,218 | [1] |  |  |
Allowance for credit loss | $ 14,186 | $ 13,843 | 13,497 | [1] | $ 13,365 | $ 12,598 | $ 9,046
Commercial and industrial | Business Assets |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |
Loans HFI, at amortized cost, gross |  |  | 390 |  |  |  |
Allowance for credit loss |  |  | $ 255 |  |  |  |
[1] | Derived from audited consolidated financial statements

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