XML 55 R43.htm IDEA: XBRL DOCUMENT v3.8.0.1

Loans - Analysis of the Credit Risk Profile of Each Loan Class (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 514,707	$ 486,067	$ 470,834
Pass
Financing Receivable, Recorded Investment [Line Items]
Total Loans	493,691	463,690
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total Loans	9,677	13,073
Substandard
Financing Receivable, Recorded Investment [Line Items]
Total Loans	11,339	9,304
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Real estate loans | Construction and land development
Financing Receivable, Recorded Investment [Line Items]
Total Loans	37,182	34,699	34,518
Real estate loans | Secured by 1-4 family residential
Financing Receivable, Recorded Investment [Line Items]
Total Loans	203,896	198,763	196,492
Real estate loans | Other real estate loans
Financing Receivable, Recorded Investment [Line Items]
Total Loans	222,154	211,210	202,843
Real estate loans | Pass | Construction and land development
Financing Receivable, Recorded Investment [Line Items]
Total Loans	31,743	29,416
Real estate loans | Pass | Secured by 1-4 family residential
Financing Receivable, Recorded Investment [Line Items]
Total Loans	199,297	193,395
Real estate loans | Pass | Other real estate loans
Financing Receivable, Recorded Investment [Line Items]
Total Loans	211,342	200,009
Real estate loans | Special Mention | Construction and land development
Financing Receivable, Recorded Investment [Line Items]
Total Loans	2,420	2,402
Real estate loans | Special Mention | Secured by 1-4 family residential
Financing Receivable, Recorded Investment [Line Items]
Total Loans	2,171	3,295
Real estate loans | Special Mention | Other real estate loans
Financing Receivable, Recorded Investment [Line Items]
Total Loans	5,028	6,990
Real estate loans | Substandard | Construction and land development
Financing Receivable, Recorded Investment [Line Items]
Total Loans	3,019	2,881
Real estate loans | Substandard | Secured by 1-4 family residential
Financing Receivable, Recorded Investment [Line Items]
Total Loans	2,428	2,073
Real estate loans | Substandard | Other real estate loans
Financing Receivable, Recorded Investment [Line Items]
Total Loans	5,784	4,211
Real estate loans | Doubtful | Construction and land development
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Real estate loans | Doubtful | Secured by 1-4 family residential
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Real estate loans | Doubtful | Other real estate loans
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Commercial and industrial loans
Financing Receivable, Recorded Investment [Line Items]
Total Loans	34,447	29,981	25,851
Commercial and industrial loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Total Loans	34,281	29,456
Commercial and industrial loans | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total Loans	58	386
Commercial and industrial loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total Loans	108	139
Commercial and industrial loans | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Consumer and other loans
Financing Receivable, Recorded Investment [Line Items]
Total Loans	17,028	11,414	$ 11,130
Consumer and other loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Total Loans	17,028	11,414
Consumer and other loans | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Consumer and other loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Consumer and other loans | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 0	$ 0

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_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

+ Details

Name:	us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_DoubtfulMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=fxnc_RealEstatePortfolioSegmentMember
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_ResidentialOneThroughFourFamilyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fxnc_OtherRealEstateLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=fxnc_CommercialAndIndustrialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: