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FAIR VALUE MEASUREMENTS - Information about Significant Unobservable Inputs Used for Recurring Fair Value Measurements for Level 3 MSRs (Detail) - Fair Value, Measurements, Recurring - Level 3 - Mortgage Servicing Rights | 3 Months Ended | 12 Months Ended
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Mar. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Minimum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Cost to service | $ 85 | $ 86
Maximum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Cost to service | 115 | 118
Weighted Average |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Cost to service | $ 96 | $ 95
Discount rate | Minimum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.079 | 0.084
Discount rate | Maximum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.108 | 0.107
Discount rate | Weighted Average |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.089 | 0.097
Prepayment rate | Minimum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.048 | 0.048
Prepayment rate | Maximum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.087 | 0.081
Prepayment rate | Weighted Average |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.054 | 0.054
Delinquency rate | Minimum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.002 | 0.002
Delinquency rate | Maximum |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.045 | 0.045
Delinquency rate | Weighted Average |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
MSR measurement inputs | 0.012 | 0.013

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- Definition 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 No definition available. + Details
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- Definition Value of input used to measure servicing asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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