LOANS HELD FOR INVESTMENT - Loan Modifications Considered Troubled Debt Restructurings Defaulted (Detail) - TDR [Member] $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022 USD ($) numberofcontracts	Jun. 30, 2021 USD ($) numberofcontracts	Jun. 30, 2022 USD ($) numberofcontracts	Jun. 30, 2021 USD ($) numberofcontracts
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	37	30	78	69
Recorded investment \| $	$ 539	$ 263	$ 1,556	$ 1,038
Residential Portfolio Segment [Member] \| Conventional Loan [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	1	0	4	2
Recorded investment \| $	$ 95	$ 0	$ 484	$ 178
Commercial Portfolio Segment [Member] \| Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	0	0	0	0
Recorded investment \| $	$ 0	$ 0	$ 0	$ 0
Commercial Portfolio Segment [Member] \| Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	0	0	0	0
Recorded investment \| $	$ 0	$ 0	$ 0	$ 0
Construction Loans [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	0	0	0	0
Recorded investment \| $	$ 0	$ 0	$ 0	$ 0
Auto loans [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	20	17	44	46
Recorded investment \| $	$ 376	$ 174	$ 898	$ 731
Finance Leases [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	0	0	1	0
Recorded investment \| $	$ 0	$ 0	$ 16	$ 0
Personal Loans [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	0	0	0	0
Recorded investment \| $	$ 0	$ 0	$ 0	$ 0
Credit Cards \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	14	11	25	12
Recorded investment \| $	$ 62	$ 86	$ 141	$ 93
Other Loans [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| numberofcontracts	2	2	4	9
Recorded investment \| $	$ 6	$ 3	$ 17	$ 36

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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 http://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 http://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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