MORTGAGE SERVICING RIGHTS - Schedule of Activity Related to MSRs (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
MORTGAGE SERVICING RIGHTS
Beginning balance			$ 808,145
Ending balance	$ 775,540		775,540
MSRs
MORTGAGE SERVICING RIGHTS
Beginning balance	793,351	$ 817,814	808,145	$ 852,399
Additions, following the sale of loan	39,377	44,607	139,815	118,518
Amortization	(54,998)	(52,254)	(162,341)	(157,340)
Pre-payments and write-offs	(2,190)	(4,192)	(10,079)	(7,602)
Ending balance	$ 775,540	$ 805,975	$ 775,540	$ 805,975

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 50
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-Section 45
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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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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.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
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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.

+ References

No definition available.

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