MORTGAGE SERVICING RIGHTS - Schedule of Activity Related to MSRs (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
MORTGAGE SERVICING RIGHTS
Beginning balance			$ 808,145
Ending balance	$ 793,351		793,351
MSRs
MORTGAGE SERVICING RIGHTS
Beginning balance	795,754	$ 825,761	808,145	$ 852,399
Additions, following the sale of loan	54,077	47,068	100,438	73,911
Amortization	(54,267)	(53,264)	(107,343)	(105,086)
Pre-payments and write-offs	(2,213)	(1,751)	(7,889)	(3,410)
Ending balance	$ 793,351	$ 817,814	$ 793,351	$ 817,814

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

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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
-Name Accounting Standards Codification
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481229/860-50-50-4

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+ 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
-Topic 860
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-Topic 860
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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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