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LOANS AND CREDIT QUALITY - Loan Modifications with Subsequent Default, by Loan Modification (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Significant Payment Delay |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loan modifications with subsequent default | $ 0 |
Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loan modifications with subsequent default | 976 |
Interest Rate Reduction and Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loan modifications with subsequent default | 0 |
Significant Payment Delay and Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loan modifications with subsequent default | 1,354 |
Interest Rate Reduction, Significant Payment Delay and Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loan modifications with subsequent default | 0 |
Commercial business | Commercial business | Significant Payment Delay |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loan modifications with subsequent default | 0 |
Consumer loan | Single family | Significant Payment Delay |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loan modifications with subsequent default | 0 | $ 340
Consumer loan | Single family | Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loan modifications with subsequent default | 0 | 0
Consumer loan | Single family | Interest Rate Reduction and Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loan modifications with subsequent default | 0 | 0
Consumer loan | Single family | Significant Payment Delay and Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loan modifications with subsequent default | 1,354 | 1,198
Consumer loan | Single family | Interest Rate Reduction, Significant Payment Delay and Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loan modifications with subsequent default | 0 | $ 764
Commercial business | Commercial business | Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loan modifications with subsequent default | 976 |
Commercial business | Commercial business | Interest Rate Reduction and Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loan modifications with subsequent default | 0 |
Commercial business | Commercial business | Significant Payment Delay and Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loan modifications with subsequent default | 0 |
Commercial business | Commercial business | Interest Rate Reduction, Significant Payment Delay and Term Extension |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loan modifications with subsequent default | $ 0 |

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