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LOANS HELD FOR INVESTMENT - Loan Modifications Considered Troubled Debt Restructurings Defaulted (Detail) - TDR [Member] $ in Thousands | 12 Months Ended
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Dec. 31, 2022 USD ($) numberofcontracts | Dec. 31, 2021 USD ($) numberofcontracts | Dec. 31, 2020 USD ($) numberofcontracts
Financing Receivable Modifications [Line Items] |  |  |
Number of contracts | numberofcontracts | 135 | 128 | 145
Recorded investment | $ | $ 2,375 | $ 1,797 | $ 1,850
Residential Portfolio Segment [Member] | Conventional Loan [Member] |  |  |
Financing Receivable Modifications [Line Items] |  |  |
Number of contracts | numberofcontracts | 2 | 0 | 4
Recorded investment | $ | $ 124 | $ 0 | $ 465
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] |  |  |
Financing Receivable Modifications [Line Items] |  |  |
Number of contracts | numberofcontracts | 0 | 0 | 3
Recorded investment | $ | $ 0 | $ 0 | $ 124
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] |  |  |
Financing Receivable Modifications [Line Items] |  |  |
Number of contracts | numberofcontracts | 0 | 0 | 0
Recorded investment | $ | $ 0 | $ 0 | $ 0
Construction Loans [Member] | Commercial Portfolio Segment [Member] |  |  |
Financing Receivable Modifications [Line Items] |  |  |
Number of contracts | numberofcontracts | 0 | 0 | 0
Recorded investment | $ | $ 0 | $ 0 | $ 0
Auto loans [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable Modifications [Line Items] |  |  |
Number of contracts | numberofcontracts | 96 | 92 | 55
Recorded investment | $ | $ 2,049 | $ 1,625 | $ 947
Finance Leases [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable Modifications [Line Items] |  |  |
Number of contracts | numberofcontracts | 1 | 0 | 1
Recorded investment | $ | $ 16 | $ 0 | $ 5
Personal Loans [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable Modifications [Line Items] |  |  |
Number of contracts | numberofcontracts | 0 | 1 | 1
Recorded investment | $ | $ 0 | $ 1 | $ 7
Credit Cards | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable Modifications [Line Items] |  |  |
Number of contracts | numberofcontracts | 28 | 24 | 23
Recorded investment | $ | $ 156 | $ 126 | $ 93
Other Loans [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable Modifications [Line Items] |  |  |
Number of contracts | numberofcontracts | 8 | 11 | 58
Recorded investment | $ | $ 30 | $ 45 | $ 209

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- Definition Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524 + Details
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