LOANS HELD FOR INVESTMENT - Loan Modifications Considered Troubled Debt Restructurings Defaulted (Detail) - TDR [Member] $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($) numberofcontracts
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	41
Recorded investment \| $	$ 1,017
Residential Portfolio Segment [Member] \| Conventional Loan [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	3
Recorded investment \| $	$ 389
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	0
Recorded investment \| $	$ 0
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	0
Recorded investment \| $	$ 0
Construction Loans [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	0
Recorded investment \| $	$ 0
Auto loans [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	24
Recorded investment \| $	$ 522
Finance Leases [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	1
Recorded investment \| $	$ 16
Personal Loans [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	0
Recorded investment \| $	$ 0
Credit Cards \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	11
Recorded investment \| $	$ 79
Other Loans [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	2
Recorded investment \| $	$ 11

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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

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Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-Subparagraph (a)(2)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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LOANS HELD FOR INVESTMENT - Loan Modifications Considered Troubled Debt Restructurings Defaulted (Detail) - TDR [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) numberofcontracts
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	41
Recorded investment \| $	$ 1,017
Residential Portfolio Segment [Member] \| Conventional Loan [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	3
Recorded investment \| $	$ 389
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	0
Recorded investment \| $	$ 0
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	0
Recorded investment \| $	$ 0
Construction Loans [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	0
Recorded investment \| $	$ 0
Auto loans [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	24
Recorded investment \| $	$ 522
Finance Leases [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	1
Recorded investment \| $	$ 16
Personal Loans [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	0
Recorded investment \| $	$ 0
Credit Cards \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	11
Recorded investment \| $	$ 79
Other Loans [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	2
Recorded investment \| $	$ 11