XML 62 R50.htm IDEA: XBRL DOCUMENT
v3.25.2

Note 4 - Allowance for Credit Losses - Nonaccrual Loans (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Nonaccrual, No Allowance | $ 3,245 | $ 2,435
Nonaccrual, With Allowance | 3,551 | 4,536
Non-accrual loans | 6,796 | 6,971
Real Estate 1 [Member] | Construction and Land Development [Member] |  |
Nonaccrual, No Allowance | 48 | 50
Nonaccrual, With Allowance | 0 | 0
Non-accrual loans | 48 | 50
Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] |  |
Nonaccrual, No Allowance | 2,218 | 2,148
Nonaccrual, With Allowance | 0 | 0
Non-accrual loans | 2,218 | 2,148
Other Real Estate Loans [Member] |  |
Nonaccrual, No Allowance | 932 | 0
Nonaccrual, With Allowance | 0 | 0
Non-accrual loans | 932 | 0
Commercial and Industrial Loans [Member] |  |
Nonaccrual, No Allowance | 46 | 237
Nonaccrual, With Allowance | 3,551 | 4,536
Non-accrual loans | 3,597 | 4,773
Consumer and Other Loans [Member] |  |
Nonaccrual, No Allowance | 1 | 0
Nonaccrual, With Allowance | 0 | 0
Non-accrual loans | $ 1 | $ 0

X
- Definition Amortized cost of financing receivable on nonaccrual status with allowance for credit loss. Excludes net investment in lease. + References No definition available. + Details
Name: | fxnc_FinancingReceivableNonaccrualWithAllowance
Namespace Prefix: | fxnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-16 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestNonaccrual
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-16 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=fxnc_RealEstate1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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