MORTGAGE SERVICING RIGHTS - Schedule of Activity Related to MSRs (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Mortgage Servicing Rights
Beginning balance			$ 907,415
Ending balance	$ 836,896		836,896
MSRs
Mortgage Servicing Rights
Beginning balance	850,831	$ 932,131	907,415	$ 975,226
Additions, following sale of loan	39,806	42,495	87,388	104,644
Amortization	(50,871)	(50,276)	(151,897)	(149,185)
Pre-payments and write-offs	(2,870)	(2,604)	(6,010)	(8,939)
Ending balance	$ 836,896	$ 921,746	$ 836,896	$ 921,746

Amount of other-than-temporary impairment (OTTI) applied to contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 50
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)(6)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481229/860-50-50-4

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Amortized amount of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

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Amount of amortization of 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
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-URI https://asc.fasb.org/1943274/2147481229/860-50-50-4

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
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-URI https://asc.fasb.org/1943274/2147481229/860-50-50-4

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Amount of additions from transfer to contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

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No definition available.

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