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LOANS HELD FOR INVESTMENT - Corporation's nonaccrual status and loans 90 days or more still accruing (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | $ 33,735 |  | $ 33,735 |  | $ 46,736
Nonaccrual Loans with ACL | 88,406 |  | 88,406 |  | 158,353
Total Nonaccrual Loans | 122,141 |  | 122,141 |  | 205,089
Loans Past Due 90 days or more Still Accruing | 148,082 |  | 148,082 |  | 145,095
Interest Income Recognized on Nonaccrual Loans | 406 | $ 412 | 1,700 | $ 1,497 |
Puerto Rico and Virgin Islands regions [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 33,244 |  | 33,244 |  | 43,591
Nonaccrual Loans with ACL | 78,972 |  | 78,972 |  | 145,691
Total Nonaccrual Loans | 112,216 |  | 112,216 |  | 189,282
Loans Past Due 90 days or more Still Accruing | 147,832 |  | 147,832 |  | 144,845
Interest Income Recognized on Nonaccrual Loans | 343 | 374 | 1,468 | 1,307 |
Florida region [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 491 |  | 491 |  | 3,145
Nonaccrual Loans with ACL | 9,434 |  | 9,434 |  | 12,662
Total Nonaccrual Loans | 9,925 |  | 9,925 |  | 15,807
Loans Past Due 90 days or more Still Accruing | 250 |  | 250 |  | 250
Interest Income Recognized on Nonaccrual Loans | 63 | 38 | 232 | 190 |
Residential Portfolio Segment [Member] | Conventional residential mortgage loans [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 4,284 |  | 4,284 |  | 15,002
Nonaccrual Loans with ACL | 56,305 |  | 56,305 |  | 110,365
Total Nonaccrual Loans | 60,589 |  | 60,589 |  | 125,367
Loans Past Due 90 days or more Still Accruing | 31,368 |  | 31,368 |  | 38,834
Interest Income Recognized on Nonaccrual Loans | 244 | 288 | 1,203 | 969 |
Residential Portfolio Segment [Member] | Conventional residential mortgage loans [Member] | Puerto Rico and Virgin Islands regions [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 4,284 |  | 4,284 |  | 12,418
Nonaccrual Loans with ACL | 47,516 |  | 47,516 |  | 98,527
Total Nonaccrual Loans | 51,800 |  | 51,800 |  | 110,945
Loans Past Due 90 days or more Still Accruing | 31,368 |  | 31,368 |  | 38,834
Interest Income Recognized on Nonaccrual Loans | 197 | 269 | 1,032 | 835 |
Residential Portfolio Segment [Member] | Conventional residential mortgage loans [Member] | Florida region [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 0 |  | 0 |  | 2,584
Nonaccrual Loans with ACL | 8,789 |  | 8,789 |  | 11,838
Total Nonaccrual Loans | 8,789 |  | 8,789 |  | 14,422
Loans Past Due 90 days or more Still Accruing | 0 |  | 0 |  | 0
Interest Income Recognized on Nonaccrual Loans | 47 | 19 | 171 | 134 |
Residential Portfolio Segment [Member] | FHA/VA government-guaranteed loans [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 0 |  | 0 |  | 0
Nonaccrual Loans with ACL | 0 |  | 0 |  | 0
Total Nonaccrual Loans | 0 |  | 0 |  | 0
Loans Past Due 90 days or more Still Accruing | 76,626 |  | 76,626 |  | 99,243
Interest Income Recognized on Nonaccrual Loans | 0 | 0 | 0 | 0 |
Residential Portfolio Segment [Member] | FHA/VA government-guaranteed loans [Member] | Puerto Rico and Virgin Islands regions [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 0 |  | 0 |  | 0
Nonaccrual Loans with ACL | 0 |  | 0 |  | 0
Total Nonaccrual Loans | 0 |  | 0 |  | 0
Loans Past Due 90 days or more Still Accruing | 76,376 |  | 76,376 |  | 98,993
Interest Income Recognized on Nonaccrual Loans | 0 | 0 | 0 | 0 |
Residential Portfolio Segment [Member] | FHA/VA government-guaranteed loans [Member] | Florida region [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 0 |  | 0 |  | 0
Nonaccrual Loans with ACL | 0 |  | 0 |  | 0
Total Nonaccrual Loans | 0 |  | 0 |  | 0
Loans Past Due 90 days or more Still Accruing | 250 |  | 250 |  | 250
Interest Income Recognized on Nonaccrual Loans | 0 | 0 | 0 | 0 |
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 12,311 |  | 12,311 |  | 15,385
Nonaccrual Loans with ACL | 6,679 |  | 6,679 |  | 5,496
Total Nonaccrual Loans | 18,990 |  | 18,990 |  | 20,881
Loans Past Due 90 days or more Still Accruing | 17,785 |  | 17,785 |  | 2,246
Interest Income Recognized on Nonaccrual Loans | 51 | 43 | 136 | 119 |
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Puerto Rico and Virgin Islands regions [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 11,820 |  | 11,820 |  | 14,824
Nonaccrual Loans with ACL | 6,394 |  | 6,394 |  | 5,496
Total Nonaccrual Loans | 18,214 |  | 18,214 |  | 20,320
Loans Past Due 90 days or more Still Accruing | 17,785 |  | 17,785 |  | 2,246
Interest Income Recognized on Nonaccrual Loans | 36 | 24 | 83 | 67 |
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Florida region [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 491 |  | 491 |  | 561
Nonaccrual Loans with ACL | 285 |  | 285 |  | 0
Total Nonaccrual Loans | 776 |  | 776 |  | 561
Loans Past Due 90 days or more Still Accruing | 0 |  | 0 |  | 0
Interest Income Recognized on Nonaccrual Loans | 15 | 19 | 53 | 52 |
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 9,626 |  | 9,626 |  | 11,777
Nonaccrual Loans with ACL | 17,186 |  | 17,186 |  | 17,834
Total Nonaccrual Loans | 26,812 |  | 26,812 |  | 29,611
Loans Past Due 90 days or more Still Accruing | 19,593 |  | 19,593 |  | 3,252
Interest Income Recognized on Nonaccrual Loans | 49 | 35 | 151 | 142 |
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Puerto Rico and Virgin Islands regions [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 9,626 |  | 9,626 |  | 11,777
Nonaccrual Loans with ACL | 17,186 |  | 17,186 |  | 17,834
Total Nonaccrual Loans | 26,812 |  | 26,812 |  | 29,611
Loans Past Due 90 days or more Still Accruing | 19,593 |  | 19,593 |  | 3,252
Interest Income Recognized on Nonaccrual Loans | 49 | 35 | 151 | 142 |
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Florida region [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 0 |  | 0 |  | 0
Nonaccrual Loans with ACL | 0 |  | 0 |  | 0
Total Nonaccrual Loans | 0 |  | 0 |  | 0
Loans Past Due 90 days or more Still Accruing | 0 |  | 0 |  | 0
Interest Income Recognized on Nonaccrual Loans | 0 | 0 | 0 | 0 |
Commercial Portfolio Segment [Member] | Construction Loans [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 4,109 |  | 4,109 |  | 4,546
Nonaccrual Loans with ACL | 1,984 |  | 1,984 |  | 8,425
Total Nonaccrual Loans | 6,093 |  | 6,093 |  | 12,971
Loans Past Due 90 days or more Still Accruing | 2 |  | 2 |  | 0
Interest Income Recognized on Nonaccrual Loans | 16 | 19 | 48 | 61 |
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Puerto Rico and Virgin Islands regions [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 4,109 |  | 4,109 |  | 4,546
Nonaccrual Loans with ACL | 1,984 |  | 1,984 |  | 8,425
Total Nonaccrual Loans | 6,093 |  | 6,093 |  | 12,971
Loans Past Due 90 days or more Still Accruing | 2 |  | 2 |  | 0
Interest Income Recognized on Nonaccrual Loans | 16 | 19 | 48 | 61 |
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Florida region [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 0 |  | 0 |  | 0
Nonaccrual Loans with ACL | 0 |  | 0 |  | 0
Total Nonaccrual Loans | 0 |  | 0 |  | 0
Loans Past Due 90 days or more Still Accruing | 0 |  | 0 |  | 0
Interest Income Recognized on Nonaccrual Loans | 0 | 0 | 0 | 0 |
Consumer Portfolio Segment [Member] | Auto loans [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 3,137 |  | 3,137 |  | 26
Nonaccrual Loans with ACL | 3,020 |  | 3,020 |  | 8,861
Total Nonaccrual Loans | 6,157 |  | 6,157 |  | 8,887
Loans Past Due 90 days or more Still Accruing | 0 |  | 0 |  | 0
Interest Income Recognized on Nonaccrual Loans | 26 | 17 | 79 | 138 |
Consumer Portfolio Segment [Member] | Auto loans [Member] | Puerto Rico and Virgin Islands regions [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 3,137 |  | 3,137 |  | 26
Nonaccrual Loans with ACL | 2,971 |  | 2,971 |  | 8,638
Total Nonaccrual Loans | 6,108 |  | 6,108 |  | 8,664
Loans Past Due 90 days or more Still Accruing | 0 |  | 0 |  | 0
Interest Income Recognized on Nonaccrual Loans | 26 | 17 | 79 | 138 |
Consumer Portfolio Segment [Member] | Auto loans [Member] | Florida region [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 0 |  | 0 |  | 0
Nonaccrual Loans with ACL | 49 |  | 49 |  | 223
Total Nonaccrual Loans | 49 |  | 49 |  | 223
Loans Past Due 90 days or more Still Accruing | 0 |  | 0 |  | 0
Interest Income Recognized on Nonaccrual Loans | 0 | 0 | 0 | 0 |
Consumer Portfolio Segment [Member] | Finance Leases [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 251 |  | 251 |  | 0
Nonaccrual Loans with ACL | 447 |  | 447 |  | 1,466
Total Nonaccrual Loans | 698 |  | 698 |  | 1,466
Loans Past Due 90 days or more Still Accruing | 0 |  | 0 |  | 0
Interest Income Recognized on Nonaccrual Loans | 0 | 2 | 1 | 23 |
Consumer Portfolio Segment [Member] | Finance Leases [Member] | Puerto Rico and Virgin Islands regions [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 251 |  | 251 |  | 0
Nonaccrual Loans with ACL | 447 |  | 447 |  | 1,466
Total Nonaccrual Loans | 698 |  | 698 |  | 1,466
Loans Past Due 90 days or more Still Accruing | 0 |  | 0 |  | 0
Interest Income Recognized on Nonaccrual Loans | 0 | 2 | 1 | 23 |
Consumer Portfolio Segment [Member] | Finance Leases [Member] | Florida region [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 0 |  | 0 |  | 0
Nonaccrual Loans with ACL | 0 |  | 0 |  | 0
Total Nonaccrual Loans | 0 |  | 0 |  | 0
Loans Past Due 90 days or more Still Accruing | 0 |  | 0 |  | 0
Interest Income Recognized on Nonaccrual Loans | 0 | 0 | 0 | 0 |
Consumer Portfolio Segment [Member] | Personal Loans [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 1 |  | 1 |  | 0
Nonaccrual Loans with ACL | 991 |  | 991 |  | 1,623
Total Nonaccrual Loans | 992 |  | 992 |  | 1,623
Loans Past Due 90 days or more Still Accruing | 0 |  | 0 |  | 0
Interest Income Recognized on Nonaccrual Loans | 17 | 8 | 71 | 36 |
Consumer Portfolio Segment [Member] | Personal Loans [Member] | Puerto Rico and Virgin Islands regions [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 1 |  | 1 |  | 0
Nonaccrual Loans with ACL | 991 |  | 991 |  | 1,623
Total Nonaccrual Loans | 992 |  | 992 |  | 1,623
Loans Past Due 90 days or more Still Accruing | 0 |  | 0 |  | 0
Interest Income Recognized on Nonaccrual Loans | 17 | 8 | 71 | 36 |
Consumer Portfolio Segment [Member] | Personal Loans [Member] | Florida region [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 0 |  | 0 |  | 0
Nonaccrual Loans with ACL | 0 |  | 0 |  | 0
Total Nonaccrual Loans | 0 |  | 0 |  | 0
Loans Past Due 90 days or more Still Accruing | 0 |  | 0 |  | 0
Interest Income Recognized on Nonaccrual Loans | 0 | 0 | 0 | 0 |
Consumer Portfolio Segment [Member] | Credit cards [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 0 |  | 0 |  | 0
Nonaccrual Loans with ACL | 0 |  | 0 |  | 0
Total Nonaccrual Loans | 0 |  | 0 |  | 0
Loans Past Due 90 days or more Still Accruing | 2,708 |  | 2,708 |  | 1,520
Interest Income Recognized on Nonaccrual Loans | 0 | 0 | 0 | 0 |
Consumer Portfolio Segment [Member] | Credit cards [Member] | Puerto Rico and Virgin Islands regions [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 0 |  | 0 |  | 0
Nonaccrual Loans with ACL | 0 |  | 0 |  | 0
Total Nonaccrual Loans | 0 |  | 0 |  | 0
Loans Past Due 90 days or more Still Accruing | 2,708 |  | 2,708 |  | 1,520
Interest Income Recognized on Nonaccrual Loans | 0 | 0 | 0 | 0 |
Consumer Portfolio Segment [Member] | Credit cards [Member] | Florida region [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 0 |  | 0 |  | 0
Nonaccrual Loans with ACL | 0 |  | 0 |  | 0
Total Nonaccrual Loans | 0 |  | 0 |  | 0
Loans Past Due 90 days or more Still Accruing | 0 |  | 0 |  | 0
Interest Income Recognized on Nonaccrual Loans | 0 | 0 | 0 | 0 |
Consumer Portfolio Segment [Member] | Other Loans [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 16 |  | 16 |  | 0
Nonaccrual Loans with ACL | 1,794 |  | 1,794 |  | 4,283
Total Nonaccrual Loans | 1,810 |  | 1,810 |  | 4,283
Loans Past Due 90 days or more Still Accruing | 0 |  | 0 |  | 0
Interest Income Recognized on Nonaccrual Loans | 3 | 0 | 11 | 9 |
Consumer Portfolio Segment [Member] | Other Loans [Member] | Puerto Rico and Virgin Islands regions [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 16 |  | 16 |  | 0
Nonaccrual Loans with ACL | 1,483 |  | 1,483 |  | 3,682
Total Nonaccrual Loans | 1,499 |  | 1,499 |  | 3,682
Loans Past Due 90 days or more Still Accruing | 0 |  | 0 |  | 0
Interest Income Recognized on Nonaccrual Loans | 2 | 0 | 3 | 5 |
Consumer Portfolio Segment [Member] | Other Loans [Member] | Florida region [Member] |  |  |  |  |
Financing Receivable, Nonaccrual [Line Items] |  |  |  |  |
Nonaccrual Loans with No ACL | 0 |  | 0 |  | 0
Nonaccrual Loans with ACL | 311 |  | 311 |  | 601
Total Nonaccrual Loans | 311 |  | 311 |  | 601
Loans Past Due 90 days or more Still Accruing | 0 |  | 0 |  | $ 0
Interest Income Recognized on Nonaccrual Loans | $ 1 | $ 0 | $ 8 | $ 4 |

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