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LOANS HELD FOR INVESTMENT - Loan Modifications Considered Troubled Debt Restructurings Defaulted (Detail) - Entity Loan Modification Program [Member] $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 USD ($) numberofcontracts | Sep. 30, 2020 USD ($) numberofcontracts | Sep. 30, 2021 USD ($) numberofcontracts | Sep. 30, 2020 USD ($) numberofcontracts
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 39 | 50 | 108 | 142
Recorded Investment | $ 628 | $ 755 | $ 1,666 | $ 3,253
Residential Portfolio Segment [Member] | Conventional Loan [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 2 | 2 | 4 | 8
Recorded Investment | $ 126 | $ 253 | $ 304 | $ 2,142
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 0 | 0 | 1
Recorded Investment | $ 0 | $ 0 | $ 0 | $ 35
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 0 | 0 | 0
Recorded Investment | $ 0 | $ 0 | $ 0 | $ 0
Commercial Portfolio Segment [Member] | Construction Loans [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 0 | 0 | 0
Recorded Investment | $ 0 | $ 0 | $ 0 | $ 0
Consumer Portfolio Segment [Member] | Other Loans [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 14 | 9 | 50
Recorded Investment | $ 0 | $ 64 | $ 36 | $ 191
Consumer Portfolio Segment [Member] | Auto loans [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 23 | 19 | 69 | 40
Recorded Investment | $ 433 | $ 358 | $ 1,164 | $ 681
Consumer Portfolio Segment [Member] | Finance Leases [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 0 | 0 | 1
Recorded Investment | $ 0 | $ 0 | $ 0 | $ 5
Consumer Portfolio Segment [Member] | Personal Loans [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 1 | 0 | 1 | 1
Recorded Investment | $ 1 | $ 0 | $ 1 | $ 7
Consumer Portfolio Segment [Member] | Credit cards [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 13 | 15 | 25 | 41
Recorded Investment | $ 68 | $ 80 | $ 161 | $ 192
Puerto Rico and Virgin Islands regions [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 39 | 50 | 108 | 142
Recorded Investment | $ 628 | $ 755 | $ 1,666 | $ 3,253
Puerto Rico and Virgin Islands regions [Member] | Residential Portfolio Segment [Member] | Conventional Loan [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 2 | 2 | 4 | 8
Recorded Investment | $ 126 | $ 253 | $ 304 | $ 2,142
Puerto Rico and Virgin Islands regions [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 0 | 0 | 1
Recorded Investment | $ 0 | $ 0 | $ 0 | $ 35
Puerto Rico and Virgin Islands regions [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 0 | 0 | 0
Recorded Investment | $ 0 | $ 0 | $ 0 | $ 0
Puerto Rico and Virgin Islands regions [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 0 | 0 | 0
Recorded Investment | $ 0 | $ 0 | $ 0 | $ 0
Puerto Rico and Virgin Islands regions [Member] | Consumer Portfolio Segment [Member] | Other Loans [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 14 | 9 | 50
Recorded Investment | $ 0 | $ 64 | $ 36 | $ 191
Puerto Rico and Virgin Islands regions [Member] | Consumer Portfolio Segment [Member] | Auto loans [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 23 | 19 | 69 | 40
Recorded Investment | $ 433 | $ 358 | $ 1,164 | $ 681
Puerto Rico and Virgin Islands regions [Member] | Consumer Portfolio Segment [Member] | Finance Leases [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 0 | 0 | 1
Recorded Investment | $ 0 | $ 0 | $ 0 | $ 5
Puerto Rico and Virgin Islands regions [Member] | Consumer Portfolio Segment [Member] | Personal Loans [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | 1 | 0 | 1 | 1
Recorded Investment | $ 1 | $ 0 | $ 1 | $ 7
Puerto Rico and Virgin Islands regions [Member] | Consumer Portfolio Segment [Member] | Credit cards [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 13 | 15 | 25 | 41
Recorded Investment | $ 68 | $ 80 | $ 161 | $ 192
Florida region |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 0 | 0 | 0
Recorded Investment | $ 0 | $ 0 | $ 0 | $ 0
Florida region | Residential Portfolio Segment [Member] | Conventional Loan [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 0 | 0 | 0
Recorded Investment | $ 0 | $ 0 | $ 0 | $ 0
Florida region | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 0 | 0 | 0
Recorded Investment | $ 0 | $ 0 | $ 0 | $ 0
Florida region | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 0 | 0 | 0
Recorded Investment | $ 0 | $ 0 | $ 0 | $ 0
Florida region | Commercial Portfolio Segment [Member] | Construction Loans [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 0 | 0 | 0
Recorded Investment | $ 0 | $ 0 | $ 0 | $ 0
Florida region | Consumer Portfolio Segment [Member] | Other Loans [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 0 | 0 | 0
Recorded Investment | $ 0 | $ 0 | $ 0 | $ 0
Florida region | Consumer Portfolio Segment [Member] | Auto loans [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 0 | 0 | 0
Recorded Investment | $ 0 | $ 0 | $ 0 | $ 0
Florida region | Consumer Portfolio Segment [Member] | Finance Leases [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 0 | 0 | 0
Recorded Investment | $ 0 | $ 0 | $ 0 | $ 0
Florida region | Consumer Portfolio Segment [Member] | Personal Loans [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 0 | 0 | 0
Recorded Investment | $ 0 | $ 0 | $ 0 | $ 0
Florida region | Consumer Portfolio Segment [Member] | Credit cards [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | numberofcontracts | 0 | 0 | 0 | 0
Recorded Investment | $ 0 | $ 0 | $ 0 | $ 0

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