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MORTGAGE BANKING OPERATIONS - Loans Serviced for Others (Details) - Commercial loans - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans serviced for others	$ 7,580,946	$ 7,570,267
Single family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans serviced for others	5,545,145	5,539,180
CRE, multifamily and SBA
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans serviced for others	$ 2,035,801	$ 2,031,087

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+ References

No definition available.

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- Definition

Principal amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction. Continuing involvement includes, but is not limited to, servicing, recourse, and restrictions on transferor's interests in transferred financial assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719

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