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MORTGAGE BANKING OPERATIONS - Loans Sold (Details) - Commercial loans - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Proceeds from sale of loans originated as held for sale | $ 372,207 | $ 830,757
Single family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Proceeds from sale of loans originated as held for sale | 323,070 | 573,040
CRE, multifamily and SBA |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Proceeds from sale of loans originated as held for sale | $ 49,137 | $ 257,717

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- Definition The cash inflow from sales of loans that are secured with real estate mortgages and are held with the intention to resell in the near future. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3461-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3536-108585 + Details
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