XML 91 R81.htm IDEA: XBRL DOCUMENT
v3.23.3

DEBT SECURITIES - Investment Securities Available for Sale (Detail) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost | $ 6,398,197 | $ 6,534,503
Gross Unrealized Gains | 247 | 28,900
Gross Unrealized Losses | 798,466 | 108,537
Allowance for Credit Losses | 458 | 1,105
Fair value | $ 5,599,520 | $ 6,453,761
Weighted-average yield | 1.22% | 1.03%
Accrued interest receivable excluded from estimate of credit losses | $ 11,100 | $ 10,100
U.S. Treasury securities [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost Due within one year | 7,493 |
Gross Unrealized Gains Due within one year | 0 |
Gross Unrealized Losses Due within one year | 309 |
Allowance for Credit Losses within one year | 0 |
Fair value Due within one year | $ 7,184 |
Weighted-average yield Due within one year | 0.22% |
Amortized cost After 1 to 5 years | $ 141,366 | 149,660
Gross Unrealized Gains After 1 to 5 years | 0 | 59
Gross Unrealized Losses After 1 to 5 years | 9,675 | 1,233
Allowance for Credit Losses After 1 to 5 years | 0 | 0
Fair value After 1 to 5 years | $ 131,691 | $ 148,486
Weighted-average yield After 1 to 5 years | 0.70% | 0.68%
U.S. GSE's obligations [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost Due within one year | $ 129,018 |
Gross Unrealized Gains Due within one year | 0 |
Gross Unrealized Losses Due within one year | 4,036 |
Allowance for Credit Losses within one year | 0 |
Fair value Due within one year | $ 124,982 |
Weighted-average yield Due within one year | 0.32% |
Amortized cost After 1 to 5 years | $ 2,395,273 | $ 1,877,181
Gross Unrealized Gains After 1 to 5 years | 22 | 240
Gross Unrealized Losses After 1 to 5 years | 227,724 | 29,555
Allowance for Credit Losses After 1 to 5 years | 0 | 0
Fair value After 1 to 5 years | $ 2,167,571 | $ 1,847,866
Weighted-average yield After 1 to 5 years | 0.83% | 0.60%
Amortized cost After 5 to 10 years | $ 56,251 | $ 403,785
Gross Unrealized Gains After 5 to 10 years | 13 | 175
Gross Unrealized Losses After 5 to 10 years | 7,670 | 10,856
Allowance for Credit Losses After 5 to 10 years | 0 | 0
Fair value After 5 to 10 years | $ 48,594 | $ 393,104
Weighted-average yield After 5 to 10 years | 1.54% | 0.90%
Amortized cost After 10 years | $ 12,170 | $ 15,788
Gross Unrealized Gains After 10 years | 36 | 224
Gross Unrealized Losses After 10 years | 0 | 0
Allowance for Credit Losses After 10 years | 0 | 0
Fair value After 10 years | $ 12,206 | $ 16,012
Weighted-average yield After 10 years | 4.62% | 0.63%
Puerto Rico government obligations [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost After 10 years | $ 3,331 | $ 3,574
Gross Unrealized Gains After 10 years | 0 | 0
Gross Unrealized Losses After 10 years | 755 | 416
Allowance for Credit Losses After 10 years | 375 | 308
Fair value After 10 years | $ 2,201 | $ 2,850
Weighted-average yield After 10 years | 0.00% | 0.00%
Allowance for Credit Losses | $ 400 | $ 300
United States And Puerto Rico Government Obligations [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost | 2,744,902 | 2,449,988
Gross Unrealized Gains | 71 | 698
Gross Unrealized Losses | 250,169 | 42,060
Allowance for Credit Losses | 375 | 308
Fair value | $ 2,494,429 | $ 2,408,318
Weighted-average yield | 0.83% | 0.67%
MBS [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost | $ 3,652,795 | $ 4,083,515
Gross Unrealized Gains | 176 | 28,202
Gross Unrealized Losses | 548,297 | 66,477
Allowance for Credit Losses | 83 | 797
Fair value | $ 3,104,591 | $ 4,044,443
Weighted-average yield | 1.52% | 1.26%
MBS [Member] | FHLMC [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost After 1 to 5 years | $ 4,235 | $ 2,811
Gross Unrealized Gains After 1 to 5 years | 0 | 119
Gross Unrealized Losses After 1 to 5 years | 169 | 0
Allowance for Credit Losses After 1 to 5 years | 0 | 0
Fair value After 1 to 5 years | $ 4,066 | $ 2,930
Weighted-average yield After 1 to 5 years | 2.33% | 2.65%
Amortized cost After 5 to 10 years | $ 204,085 | $ 193,234
Gross Unrealized Gains After 5 to 10 years | 0 | 2,419
Gross Unrealized Losses After 5 to 10 years | 19,061 | 1,122
Allowance for Credit Losses After 5 to 10 years | 0 | 0
Fair value After 5 to 10 years | $ 185,024 | $ 194,531
Weighted-average yield After 5 to 10 years | 1.55% | 1.29%
Amortized cost After 10 years | $ 1,092,289 | $ 1,240,964
Gross Unrealized Gains After 10 years | 0 | 3,748
Gross Unrealized Losses After 10 years | 186,558 | 23,503
Allowance for Credit Losses After 10 years | 0 | 0
Fair value After 10 years | $ 905,731 | $ 1,221,209
Weighted-average yield After 10 years | 1.38% | 1.18%
Amortized cost | $ 1,300,609 | $ 1,437,009
Gross Unrealized Gains | 0 | 6,286
Gross Unrealized Losses | 205,788 | 24,625
Allowance for Credit Losses | 0 | 0
Fair value | $ 1,094,821 | $ 1,418,670
Weighted-average yield | 1.41% | 1.20%
MBS [Member] | GNMA [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost Due within one year | $ 5 | $ 2
Gross Unrealized Gains Due within one year | 0 | 0
Gross Unrealized Losses Due within one year | 0 | 0
Allowance for Credit Losses within one year | 0 | 0
Fair value Due within one year | $ 5 | $ 2
Weighted-average yield Due within one year | 1.73% | 1.32%
Amortized cost After 1 to 5 years | $ 15,508 | $ 16,714
Gross Unrealized Gains After 1 to 5 years | 0 | 572
Gross Unrealized Losses After 1 to 5 years | 622 | 0
Allowance for Credit Losses After 1 to 5 years | 0 | 0
Fair value After 1 to 5 years | $ 14,886 | $ 17,286
Weighted-average yield After 1 to 5 years | 2.00% | 2.90%
Amortized cost After 5 to 10 years | $ 45,322 | $ 27,271
Gross Unrealized Gains After 5 to 10 years | 1 | 80
Gross Unrealized Losses After 5 to 10 years | 3,809 | 139
Allowance for Credit Losses After 5 to 10 years | 0 | 0
Fair value After 5 to 10 years | $ 41,514 | $ 27,212
Weighted-average yield After 5 to 10 years | 1.31% | 0.51%
Amortized cost After 10 years | $ 232,632 | $ 338,927
Gross Unrealized Gains After 10 years | 51 | 7,091
Gross Unrealized Losses After 10 years | 27,169 | 2,174
Allowance for Credit Losses After 10 years | 0 | 0
Fair value After 10 years | $ 205,514 | $ 343,844
Weighted-average yield After 10 years | 2.47% | 1.45%
Amortized cost | $ 293,467 | $ 382,914
Gross Unrealized Gains | 52 | 7,743
Gross Unrealized Losses | 31,600 | 2,313
Allowance for Credit Losses | 0 | 0
Fair value | $ 261,919 | $ 388,344
Weighted-average yield | 2.27% | 1.45%
MBS [Member] | FNMA [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost Due within one year |  | $ 4,975
Gross Unrealized Gains Due within one year |  | 21
Gross Unrealized Losses Due within one year |  | 0
Allowance for Credit Losses within one year |  | 0
Fair value Due within one year |  | $ 4,996
Weighted-average yield Due within one year |  | 2.03%
Amortized cost After 1 to 5 years | $ 9,685 | $ 21,337
Gross Unrealized Gains After 1 to 5 years | 0 | 424
Gross Unrealized Losses After 1 to 5 years | 521 | 0
Allowance for Credit Losses After 1 to 5 years | 0 | 0
Fair value After 1 to 5 years | $ 9,164 | $ 21,761
Weighted-average yield After 1 to 5 years | 1.76% | 2.87%
Amortized cost After 5 to 10 years | $ 400,223 | $ 298,771
Gross Unrealized Gains After 5 to 10 years | 0 | 4,387
Gross Unrealized Losses After 5 to 10 years | 36,871 | 1,917
Allowance for Credit Losses After 5 to 10 years | 0 | 0
Fair value After 5 to 10 years | $ 363,352 | $ 301,241
Weighted-average yield After 5 to 10 years | 1.70% | 1.41%
Amortized cost After 10 years | $ 1,186,635 | $ 1,389,381
Gross Unrealized Gains After 10 years | 124 | 8,953
Gross Unrealized Losses After 10 years | 186,757 | 21,747
Allowance for Credit Losses After 10 years | 0 | 0
Fair value After 10 years | $ 1,000,002 | $ 1,376,587
Weighted-average yield After 10 years | 1.38% | 1.21%
Amortized cost | $ 1,596,543 | $ 1,714,464
Gross Unrealized Gains | 124 | 13,785
Gross Unrealized Losses | 224,149 | 23,664
Allowance for Credit Losses | 0 | 0
Fair value | $ 1,372,518 | $ 1,704,585
Weighted-average yield | 1.46% | 1.27%
MBS [Member] | Collateralized mortgage obligations guaranteed by FHLMC, FNMA and GNMA [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost After 1 to 5 years | $ 30,578 | $ 24,007
Gross Unrealized Gains After 1 to 5 years | 0 | 1
Gross Unrealized Losses After 1 to 5 years | 4,463 | 778
Allowance for Credit Losses After 1 to 5 years | 0 | 0
Fair value After 1 to 5 years | $ 26,115 | $ 23,230
Weighted-average yield After 1 to 5 years | 2.43% | 1.31%
Amortized cost After 5 to 10 years |  | $ 14,316
Gross Unrealized Gains After 5 to 10 years |  | 97
Gross Unrealized Losses After 5 to 10 years |  | 0
Allowance for Credit Losses After 5 to 10 years |  | 0
Fair value After 5 to 10 years |  | $ 14,413
Weighted-average yield After 5 to 10 years |  | 0.76%
Amortized cost After 10 years | $ 423,695 | $ 500,811
Gross Unrealized Gains After 10 years | 0 | 290
Gross Unrealized Losses After 10 years | 80,271 | 13,134
Allowance for Credit Losses After 10 years | 0 | 0
Fair value After 10 years | $ 343,424 | $ 487,967
Weighted-average yield After 10 years | 1.38% | 1.23%
Amortized cost | $ 454,273 | $ 539,134
Gross Unrealized Gains | 0 | 388
Gross Unrealized Losses | 84,734 | 13,912
Allowance for Credit Losses | 0 | 0
Fair value | $ 369,539 | $ 525,610
Weighted-average yield | 1.45% | 1.22%
MBS [Member] | Private label [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost After 10 years | $ 7,903 | $ 9,994
Gross Unrealized Gains After 10 years | 0 | 0
Gross Unrealized Losses After 10 years | 2,026 | 1,963
Allowance for Credit Losses After 10 years | 83 | 797
Fair value After 10 years | $ 5,794 | $ 7,234
Weighted-average yield After 10 years | 6.83% | 2.21%
Gross Unrealized Losses | $ 2,100 |
Allowance for Credit Losses | 100 | $ 800
Fair value | $ 5,800 |
Weighted-average yield | 6.83% |
Other Debt Obligations [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized cost Due within one year | $ 500 | 500
Gross Unrealized Gains Due within one year | 0 | 0
Gross Unrealized Losses Due within one year | 0 | 0
Allowance for Credit Losses within one year | 0 | 0
Fair value Due within one year | $ 500 | $ 500
Weighted-average yield Due within one year | 0.84% | 0.72%
Amortized cost After 1 to 5 years |  | $ 500
Gross Unrealized Gains After 1 to 5 years |  | 0
Gross Unrealized Losses After 1 to 5 years |  | 0
Allowance for Credit Losses After 1 to 5 years |  | 0
Fair value After 1 to 5 years |  | $ 500
Weighted-average yield After 1 to 5 years |  | 0.84%
Amortized cost |  | $ 1,000
Gross Unrealized Gains |  | 0
Gross Unrealized Losses |  | 0
Allowance for Credit Losses |  | 0
Fair value |  | $ 1,000
Weighted-average yield |  | 0.78%

X
- Definition Accrued Interest Receivable Excluded From Estimate Of Credit Losses + References No definition available. + Details
Name: | fbp_AccruedInterestReceivableExcludedFromEstimateOfCreditLosses
Namespace Prefix: | fbp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. This represents single maturity date and allocated without single maturity date, maturing in sixth fiscal year through tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References No definition available. + Details
Name: | fbp_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTaxAfterFiveThroughTenYears
Namespace Prefix: | fbp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. This represents single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References No definition available. + Details
Name: | fbp_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTaxAfterOneThroughFiveYears
Namespace Prefix: | fbp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. This represents single maturity date and allocated without single maturity date, maturing after tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References No definition available. + Details
Name: | fbp_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTaxAfterTenYears
Namespace Prefix: | fbp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.This represents single maturity date and allocated without single maturity date, maturing in next fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References No definition available. + Details
Name: | fbp_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTaxWithinOneYear
Namespace Prefix: | fbp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. This represents single maturity date and allocated without single maturity date, maturing in sixth fiscal year through tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References No definition available. + Details
Name: | fbp_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTaxAfterFiveThroughTenYears
Namespace Prefix: | fbp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. This represents single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References No definition available. + Details
Name: | fbp_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTaxAfterOneThroughFiveYears
Namespace Prefix: | fbp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. This represents single maturity date and allocated without single maturity date, maturing after tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References No definition available. + Details
Name: | fbp_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTaxAfterTenYears
Namespace Prefix: | fbp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.This represents single maturity date and allocated without single maturity date, maturing in next fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References No definition available. + Details
Name: | fbp_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTaxWithinOneYear
Namespace Prefix: | fbp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). This represents single maturity date and allocated without single maturity date, maturing in sixth fiscal year through tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References No definition available. + Details
Name: | fbp_DebtSecuritiesAvailableForSaleAllowanceForCreditLossAfterFiveThroughTenYears
Namespace Prefix: | fbp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). This represents single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References No definition available. + Details
Name: | fbp_DebtSecuritiesAvailableForSaleAllowanceForCreditLossAfterOneThroughFiveYears
Namespace Prefix: | fbp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). This represents single maturity date and allocated without single maturity date, maturing after tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References No definition available. + Details
Name: | fbp_DebtSecuritiesAvailableForSaleAllowanceForCreditLossAfterTenYears
Namespace Prefix: | fbp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). This represents single maturity date and allocated without single maturity date, maturing in next fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. + References No definition available. + Details
Name: | fbp_DebtSecuritiesAvailableForSaleAllowanceForCreditLossWithinOneYear
Namespace Prefix: | fbp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Weighted average yield of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References No definition available. + Details
Name: | fbp_DebtSecuritiesAvailableForSaleMaturityWeightedAverageYield
Namespace Prefix: | fbp_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27198-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27198-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3A -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126980459&loc=SL120269850-112803 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27198-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27198-111563 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3A -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126980459&loc=SL120269850-112803 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27198-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3A -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126980459&loc=SL120269850-112803 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27198-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27198-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3A -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126980459&loc=SL120269850-112803 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27198-111563 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 9 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 9 -Subparagraph (i) -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aaa) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Weighted average yield of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), maturing after tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Industry Guide -Number 3 -Section II -Paragraph B Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (a) -Subparagraph (4) + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleMaturityAfter10YearsWeightedAverageYield
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average yield of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Industry Guide -Number 3 -Section II -Paragraph B Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (a) -Subparagraph (3) + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleMaturityAfterFiveThroughTenYearsWeightedAverageYield
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average yield of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Industry Guide -Number 3 -Section II -Paragraph B Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (a) -Subparagraph (2) + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleMaturityAfterOneThroughFiveYearsWeightedAverageYield
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average yield of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Industry Guide -Number 3 -Section II -Paragraph B Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (a) -Subparagraph (1) + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleMaturityWithinOneYearWeightedAverageYield
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USStatesAndPoliticalSubdivisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=fbp_UnitedStatesAndPuertoRicoGovernmentObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_FederalHomeLoanMortgageCorporationCertificatesAndObligationsFHLMCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_GovernmentNationalMortgageAssociationCertificatesAndObligationsGNMAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_FederalNationalMortgageAssociationCertificatesAndObligationsFNMAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_CollateralizedMortgageObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_OtherDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |