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MORTGAGE BANKING OPERATIONS - Single Family MSR Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Additions and amortization:
Amortization	$ 1,684	$ 3,425
Changes in fair value of MSR assumptions	(311)	10,303
Ending balance	75,701
Single family
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance	76,617	61,584
Additions and amortization:
Originations	619	3,916
Purchases	460	0
Amortization	(1,684)	(3,425)
Net additions and amortization	(605)	491
Changes in fair value of MSR assumptions	(311)	10,303
Ending balance	$ 75,701	$ 72,378

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Changes in the fair value of mortgage servicing rights due to modeled amortization.

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Servicing Asset at Fair Value, Additions and Amortization, Net

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The value of new servicing assets, subsequently measured at fair value, acquired or created during the current period through purchases or from transfers of financial assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)(2)
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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 45
-Paragraph 2
-Subparagraph (b)
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of increase (decrease) from changes in fair value classified as other for a contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

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