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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Non Traditional Mortgages Portfolio (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans receivable | $ 7,451,264 | $ 7,251,480
Consumer | NTM Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans receivable | 841,100 | 635,300
Consumer | NTM Loans | Green |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans receivable | $ 7,400 | $ 21,900

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