XML 50 R39.htm IDEA: XBRL DOCUMENT
v3.19.1

Securities (Summary of Book Values and Fair Values of Investment Securities) (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018 | Mar. 31, 2018
--- | --- | --- | ---
Securities available for sale: |  |  |
Amortized Cost | $ 646,096 | $ 513,741 |
Fair Value | 639,609 | 501,351 | $ 341,001
Unrealized Gains | 1,376 | 178 |
Unrealized (Losses) | (7,863) | (12,568) |
Securities held to maturity: |  |  |
Amortized Cost | 90,903 | 101,237 | 112,058
Fair Value | 90,280 | 99,906 | $ 111,201
Unrealized Gains | 465 | 525 |
Unrealized (Losses) | (1,088) | (1,856) |
Government-sponsored enterprise securities [Member] |  |  |
Securities available for sale: |  |  |
Amortized Cost | 78,995 | 82,995 |
Fair Value | 78,887 | 82,662 |
Unrealized Gains | 84 | 63 |
Unrealized (Losses) | (192) | (396) |
Mortgage-backed securities [Member] |  |  |
Securities available for sale: |  |  |
Amortized Cost | 533,360 | 396,995 |
Fair Value | 526,948 | 385,551 |
Unrealized Gains | 1,089 | 39 |
Unrealized (Losses) | (7,501) | (11,483) |
Securities held to maturity: |  |  |
Amortized Cost | 49,361 | 52,048 |
Fair Value | 48,291 | 50,241 |
Unrealized Gains |  |  |
Unrealized (Losses) | (1,070) | (1,807) |
State and local governments [Member] |  |  |
Securities held to maturity: |  |  |
Amortized Cost | 41,542 | 49,189 |
Fair Value | 41,989 | 49,665 |
Unrealized Gains | 465 | 525 |
Unrealized (Losses) | (18) | (49) |
Corporate bonds [Member] |  |  |
Securities available for sale: |  |  |
Amortized Cost | 33,741 | 33,751 |
Fair Value | 33,774 | 33,138 |
Unrealized Gains | 203 | 76 |
Unrealized (Losses) | $ (170) | $ (689) |

X
- Definition This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities. + References No definition available. + Details
Name: | fbp_AvailableforsaleSecuritiesGrossUnrealizedGainsPointinTime
Namespace Prefix: | fbp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the gross unrealized losses for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities. + References No definition available. + Details
Name: | fbp_AvailableforsaleSecuritiesGrossUnrealizedLossesPointinTime
Namespace Prefix: | fbp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This item represents the gross unrealized gains for securities, at a point in time, which are categorized as held-to-maturity. + References No definition available. + Details
Name: | fbp_HeldtoMaturitySecuritiesGrossUnrealizedGainsPointinTime
Namespace Prefix: | fbp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the gross unrealized losses for securities, at a point in time, which are categorized as held-to-maturity. + References No definition available. + Details
Name: | fbp_HeldtoMaturitySecuritiesGrossUnrealizedLossesPointinTime
Namespace Prefix: | fbp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesAmortizedCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118954083&loc=d3e26610-111562 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27232-111563 + Details
Name: | us-gaap_HeldToMaturitySecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27232-111563 + Details
Name: | us-gaap_HeldToMaturitySecuritiesFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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_MortgageBackedSecuritiesMember
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=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |