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MORTGAGE BANKING OPERATIONS - Loans Sold (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Proceeds from sale of loans originated as held for sale | $ 161,193 | $ 538,900 | $ 771,315 | $ 2,135,360
Single family |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Proceeds from sale of loans originated as held for sale | 131,228 | 469,090 | 641,921 | 1,669,412
CRE, multifamily and SBA | Commercial loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Proceeds from sale of loans originated as held for sale | $ 29,965 | $ 69,810 | $ 129,394 | $ 465,948

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