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MORTGAGE BANKING OPERATIONS - Revenue from Mortgage Servicing (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Servicing income, net:
Servicing fees and other	$ 6,405	$ 7,673	$ 19,666	$ 25,501
Amortization of single family MSRs	(1,564)	(2,112)	(4,874)	(8,052)
Amortization of multifamily and SBA MSRs	(1,374)	(1,828)	(4,363)	(5,877)
Net servicing income	3,467	3,733	10,429	11,572
Risk management, single family MSRs:
Changes in fair value of MSRs due to assumptions	785	1,989	1,794	16,615
Mortgage servicing rights, risk management	(375)	(992)	(1,039)	(1,866)
Loan servicing income	3,092	2,741	9,390	9,706
Servicing contracts
Risk management, single family MSRs:
Net gain (loss) from economic hedging	$ (1,160)	$ (2,981)	$ (2,833)	$ (18,481)

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- Definition

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

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- Definition

Derivative, Gain (Loss) On Derivative, Net, And Debt Securities, Trading, Unrealized Gain (Loss)

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- Definition

Changes in MSR fair value due to changes in model inputs and assumptions, net of risk management derivatives.

+ References

No definition available.

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- Definition

Servicing and other related fees, net of payments.

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- Definition

Risk Management, Single Family MSRs [Abstract]

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- Definition

Servicing fees and other.

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- Definition

Servicing Fees Net, Including Discontinued Operations

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- Definition

Servicing Income, Net [Abstract]

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The periodic amortization (in proportion to and over the period of estimated net servicing income or loss) of capitalized servicing rights, which contractually entitle the servicer to receive fees and ancillary revenues for performing billing, collection, disbursement and recordkeeping services in connection with a mortgage portfolio. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 860
-SubTopic 50
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)(4)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481229/860-50-50-4

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 50
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(4)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481229/860-50-50-3

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