XML 56 R45.htm IDEA: XBRL DOCUMENT
v3.25.2

Loans, Allowance for Credit Losses, and Asset Quality Information - Collateral Dependent Loans (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Loans and Leases Receivable Disclosure [Line Items] |  |
Total Collateral-Dependent Loans | $ 5,649 | $ 879
Commercial Property |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Total Collateral-Dependent Loans | 5,649 | 879
Real estate, commercial | Accruing 30-59 Days Past Due | Commercial real estate - owner occupied |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Total Collateral-Dependent Loans | 2,598 | 879
Real estate, commercial | Accruing 30-59 Days Past Due | Commercial real estate - owner occupied | Commercial Property |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Total Collateral-Dependent Loans | 2,598 | $ 879
Real estate, commercial | Accruing 30-59 Days Past Due | Commercial real estate - non owner occupied |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Total Collateral-Dependent Loans | 3,051 |
Real estate, commercial | Accruing 30-59 Days Past Due | Commercial real estate - non owner occupied | Commercial Property |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Total Collateral-Dependent Loans | $ 3,051 |

X
- Definition Financing Receivable, Recorded Investment, Collateral Dependent Loans + References No definition available. + Details
Name: | fbnc_FinancingReceivableRecordedInvestmentCollateralDependentLoans
Namespace Prefix: | fbnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_LoansAndLeasesReceivableDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_CollateralAxis=fbnc_CommercialPropertyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables30To59DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fbnc_CommercialRealEstateOwnerOccupiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fbnc_CommercialRealEstateNonOwnerOccupiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |