XML 23 R42.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Allowance for Loan Losses (Details 2) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Impaired loans and the related allowance |  |
Unpaid Principal Balance | $ 22,292 | $ 22,675
Recorded Investment with No Allowance | 7,657 | 7,198
Recorded Investment with Allowance | 11,563 | 9,782
Total Recorded Investment | 19,220 | 16,980
Related Allowance | 1,924 | 1,838
Average Recorded Investment | 17,696 | 20,990
Interest Income Recognized | 136 | 548
Commercial and industrial [Member] |  |
Impaired loans and the related allowance |  |
Unpaid Principal Balance | 2,510 | 161
Recorded Investment with Allowance | 2,509 | 160
Total Recorded Investment | 2,509 | 160
Related Allowance | 261 | 35
Average Recorded Investment | 185 | 330
Interest Income Recognized | 27 | 10
Consumer and other loans [Member] |  |
Impaired loans and the related allowance |  |
Unpaid Principal Balance |  |
Recorded Investment with No Allowance |  |
Recorded Investment with Allowance |  |
Total Recorded Investment |  |
Related Allowance |  |
Average Recorded Investment |  |
Interest Income Recognized |  |
Construction and land development [Member] | Real estate loans [Member] |  |
Impaired loans and the related allowance |  |
Unpaid Principal Balance | 6,441 | 2,947
Recorded Investment with No Allowance | 4,988 | 622
Recorded Investment with Allowance | 1,110 | 1,894
Total Recorded Investment | 6,098 | 2,516
Related Allowance | 604 | 567
Average Recorded Investment | 4,244 | 5,691
Interest Income Recognized | 16 | 99
Secured by 1-4 family residential [Member] | Real estate loans [Member] |  |
Impaired loans and the related allowance |  |
Unpaid Principal Balance | 3,898 | 4,706
Recorded Investment with No Allowance | 1,024 | 1,690
Recorded Investment with Allowance | 1,935 | 2,086
Total Recorded Investment | 2,959 | 3,776
Related Allowance | 156 | 306
Average Recorded Investment | 4,116 | 4,821
Interest Income Recognized | 23 | 163
Other real estate loans [Member] | Real estate loans [Member] |  |
Impaired loans and the related allowance |  |
Unpaid Principal Balance | 9,443 | 14,861
Recorded Investment with No Allowance | 1,645 | 4,886
Recorded Investment with Allowance | 6,009 | 5,642
Total Recorded Investment | 7,654 | 10,528
Related Allowance | 903 | 930
Average Recorded Investment | 9,151 | 10,148
Interest Income Recognized | $ 70 | $ 276

X
- Definition Impaired financing receivable interest income recognized. + References No definition available. + Details
Name: | fxnc_ImpairedFinancingReceivableInterestIncomeRecognized
Namespace Prefix: | fxnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Impaired financing receivables average recorded investment. + References No definition available. + Details
Name: | fxnc_ImpairedFinancingReceivablesAverageRecordedInvestment
Namespace Prefix: | fxnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of allowance for credit losses related to recorded investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRelatedAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalanceAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of investment in impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant