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LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Recorded Investment in Residential, Consumer and Credit Card Loans Based on Payment Activity (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 | Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans receivable | $ 4,446,342 | $ 4,231,742
Credit Card Consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans receivable | 12,638 | 10,825
Total | 103 |
Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans receivable | 1,378,180 | 1,294,785
Performing | Credit Card Consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans receivable | 12,541 | 10,817
Nonperforming |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans receivable | 6,362 | 5,769
Nonperforming | Credit Card Consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Net loans receivable | $ 97 | $ 8

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