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LOANS AND CREDIT QUALITY - Loan Modifications (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Consumer loans | Single family | Significant Payment Delay and Term Extension |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Amortized Cost Basis at Period End | $ 804 | $ 942 | $ 1,177 | $ 1,120
% of Total Class of Financing Receivable | 0.07% | 0.09% | 0.03% | 0.10%
Consumer loans | Single family | Interest Rate Reduction, Significant Payment Delay and Term Extension |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Amortized Cost Basis at Period End | $ 0 | $ 192 | $ 0 | $ 192
% of Total Class of Financing Receivable | 0.00% | 0.02% | 0.00% | 0.02%
Consumer loans | Single family | Interest Rate Reduction |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Weighted average contractual interest rate, after modification |  | 5.00% |  | 5.00%
Weighted average contractual interest rate, before modification |  | 5.25% |  | 5.25%
Commercial loans, adjusted for credit analysis | Commercial business | Significant Payment Delay |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Amortized Cost Basis at Period End | $ 0 | $ 0 | $ 97 | $ 0
% of Total Class of Financing Receivable | 0.00% | 0.00% | 0.03% | 0.00%
Commercial loans, adjusted for credit analysis | Commercial business | Term Extension |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Amortized Cost Basis at Period End | $ 0 | $ 4,734 | $ 3,455 | $ 4,734
% of Total Class of Financing Receivable | 0.00% | 1.27% | 0.92% | 1.27%

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