XML 36 R23.htm IDEA: XBRL DOCUMENT
v3.23.3

Note 2 - Securities (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2023
Notes Tables |
Schedule of Available-for-sale and Held-to-maturity Reconciliation [Table Text Block] |
|  | September 30, 2023 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized (Losses) |  |  | Fair Value |  |  | Allowance for Credit Losses |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 12,474 |  |  | $ | — |  |  | $ | (1,361 | ) |  | $ | 11,113 |  |  | $ | — |
U.S. agency and mortgage-backed securities |  |  | 99,894 |  |  |  | 60 |  |  |  | (15,660 | ) |  |  | 84,294 |  |  |  | — |
Obligations of states and political subdivisions |  |  | 64,131 |  |  |  | 4 |  |  |  | (11,367 | ) |  |  | 52,768 |  |  |  | — |
Total securities available for sale |  | $ | 176,499 |  |  | $ | 64 |  |  | $ | (28,388 | ) |  | $ | 148,175 |  |  | $ | — |
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 38,862 |  |  | $ | — |  |  | $ | (734 | ) |  | $ | 38,128 |  |  | $ | — |
U.S. agency and mortgage-backed securities |  |  | 96,563 |  |  |  | — |  |  |  | (12,216 | ) |  |  | 84,347 |  |  |  | — |
Obligations of states and political subdivisions |  |  | 11,654 |  |  |  | — |  |  |  | (1,706 | ) |  |  | 9,948 |  |  |  | — |
Corporate debt securities |  |  | 3,000 |  |  |  | — |  |  |  | (564 | ) |  |  | 2,436 |  |  |  | (131 | )
Total securities held to maturity |  | $ | 150,079 |  |  | $ | - |  |  | $ | (15,220 | ) |  | $ | 134,859 |  |  | $ | (131 | )
Total securities |  | $ | 326,578 |  |  | $ | 64 |  |  | $ | (43,608 | ) |  | $ | 283,034 |  |  | $ | (131 | )
|  | December 31, 2022 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized (Losses) |  |  | Fair Value |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 12,468 |  |  | $ | — |  |  | $ | (1,239 | ) |  | $ | 11,229 |
U.S. agency and mortgage-backed securities |  |  | 109,972 |  |  |  | 95 |  |  |  | (13,149 | ) |  |  | 96,918 |
Obligations of states and political subdivisions |  |  | 64,386 |  |  |  | 4 |  |  |  | (9,630 | ) |  |  | 54,760 |
Total securities available for sale |  | $ | 186,826 |  |  | $ | 99 |  |  | $ | (24,018 | ) |  | $ | 162,907 |
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 38,211 |  |  | $ | — |  |  | $ | (568 | ) |  | $ | 37,643 |
U.S. agency and mortgage-backed securities |  |  | 99,374 |  |  |  | — |  |  |  | (9,189 | ) |  |  | 90,185 |
Obligations of states and political subdivisions |  |  | 12,573 |  |  |  | — |  |  |  | (1,252 | ) |  |  | 11,321 |
Corporate debt securities |  |  | 3,000 |  |  |  | — |  |  |  | (352 | ) |  |  | 2,648 |
Total securities held to maturity |  | $ | 153,158 |  |  | $ | — |  |  | $ | (11,361 | ) |  | $ | 141,797 |
Total securities |  | $ | 339,984 |  |  | $ | 99 |  |  | $ | (35,379 | ) |  | $ | 304,704 |
Schedule of Temporary Impairment Losses, Investments [Table Text Block] |
|  | September 30, 2023 |
|  | Less than 12 months |  |  | 12 months or more |  |  | Total |
|  | Fair Value |  |  | Unrealized (Loss) |  |  | Fair Value |  |  | Unrealized (Loss) |  |  | Fair Value |  |  | Unrealized (Loss) |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | — |  |  | $ | — |  |  | $ | 11,113 |  |  | $ | (1,361 | ) |  | $ | 11,113 |  |  | $ | (1,361 | )
U.S. agency and mortgage-backed securities |  |  | 2,065 |  |  |  | (37 | ) |  |  | 77,201 |  |  |  | (15,623 | ) |  |  | 79,266 |  |  |  | (15,660 | )
Obligations of states and political subdivisions |  |  | 7,753 |  |  |  | (382 | ) |  |  | 44,511 |  |  |  | (10,985 | ) |  |  | 52,264 |  |  |  | (11,367 | )
Total securities available for sale |  | $ | 9,818 |  |  | $ | (419 | ) |  | $ | 132,825 |  |  | $ | (27,969 | ) |  | $ | 142,643 |  |  | $ | (28,388 | )
|  | December 31, 2022 |
|  | Less than 12 months |  |  | 12 months or more |  |  | Total |
|  | Fair Value |  |  | Unrealized (Loss) |  |  | Fair Value |  |  | Unrealized (Loss) |  |  | Fair Value |  |  | Unrealized (Loss) |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 9,041 |  |  | $ | (932 | ) |  | $ | 2,188 |  |  | $ | (307 | ) |  | $ | 11,229 |  |  | $ | (1,239 | )
U.S. agency and mortgage-backed securities |  |  | 27,282 |  |  |  | (1,945 | ) |  |  | 62,342 |  |  |  | (11,204 | ) |  |  | 89,624 |  |  |  | (13,149 | )
Obligations of states and political subdivisions |  |  | 24,689 |  |  |  | (2,581 | ) |  |  | 26,362 |  |  |  | (7,049 | ) |  |  | 51,051 |  |  |  | (9,630 | )
Total securities available for sale |  | $ | 61,012 |  |  | $ | (5,458 | ) |  | $ | 90,892 |  |  | $ | (18,560 | ) |  | $ | 151,904 |  |  | $ | (24,018 | )
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 19,302 |  |  | $ | (258 | ) |  | $ | 18,342 |  |  | $ | (310 | ) |  | $ | 37,644 |  |  | $ | (568 | )
U.S. agency and mortgage-backed securities |  |  | 58,019 |  |  |  | (6,848 | ) |  |  | 32,167 |  |  |  | (2,341 | ) |  |  | 90,186 |  |  |  | (9,189 | )
Obligations of states and political subdivisions |  |  | 8,648 |  |  |  | (1,008 | ) |  |  | 2,672 |  |  |  | (244 | ) |  |  | 11,320 |  |  |  | (1,252 | )
Corporate debt securities |  |  | 2,648 |  |  |  | (352 | ) |  |  | — |  |  |  | — |  |  |  | 2,648 |  |  |  | (352 | )
Total securities held to maturity |  | $ | 88,617 |  |  | $ | (8,466 | ) |  | $ | 53,181 |  |  | $ | (2,895 | ) |  | $ | 141,798 |  |  | $ | (11,361 | )
Total securities |  | $ | 149,629 |  |  | $ | (13,924 | ) |  | $ | 144,073 |  |  | $ | (21,455 | ) |  | $ | 293,702 |  |  | $ | (35,379 | )
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | Available for Sale |  |  | Held to Maturity |
|  | Amortized Cost |  |  | Fair Value |  |  | Amortized Cost |  |  | Fair Value |
Due within one year |  | $ | 760 |  |  | $ | 757 |  |  | $ | 20,828 |  |  | $ | 20,642 |
Due after one year through five years |  |  | 23,027 |  |  |  | 21,026 |  |  |  | 28,993 |  |  |  | 27,586 |
Due after five years through ten years |  |  | 37,962 |  |  |  | 33,340 |  |  |  | 23,514 |  |  |  | 20,658 |
Due after ten years |  |  | 114,750 |  |  |  | 93,052 |  |  |  | 76,744 |  |  |  | 65,973 |
|  | $ | 176,499 |  |  | $ | 148,175 |  |  | $ | 150,079 |  |  | $ | 134,859 |
Marketable Securities [Table Text Block] |
|  | September 30, 2023 |  |  | December 31, 2022 |
Federal Home Loan Bank stock |  | $ | 965 |  |  | $ | 796 |
Federal Reserve Bank stock |  |  | 980 |  |  |  | 980 |
Community Bankers’ Bank stock |  |  | 132 |  |  |  | 132 |
|  | $ | 2,077 |  |  | $ | 1,908 |
Debt Securities, Held-to-Maturity, Credit Quality Indicator [Table Text Block] |
|  | U.S. Treasury securities |  |  | U.S. agency and mortgage-backed securities |  |  | Obligations of states and political subdivisions |  |  | Corporate debt securities |  |  | Total Held to Maturity Securities |
September 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aaa |  | $ | 38,862 |  |  | $ | 22,877 |  |  | $ | 2,812 |  |  | $ | — |  |  | $ | 64,551 |
Aa1 / Aa2 / Aa3 |  |  | — |  |  |  | — |  |  |  | 8,842 |  |  |  | — |  |  |  | 8,842 |
Baa1 / Baa2 / Baa3 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 3,000 |  |  |  | 3,000 |
Not rated - Agency (1) |  |  | — |  |  |  | 73,686 |  |  |  | — |  |  |  | — |  |  |  | 73,686 |
Total |  | $ | 38,862 |  |  | $ | 96,563 |  |  | $ | 11,654 |  |  | $ | 3,000 |  |  | $ | 150,079 |
December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aaa |  | $ | 38,211 |  |  | $ | 22,706 |  |  | $ | 3,126 |  |  | $ | — |  |  | $ | 64,043 |
Aa1 / Aa2 / Aa3 |  |  | — |  |  |  | — |  |  |  | 9,447 |  |  |  | — |  |  |  | 9,447 |
Baa1 / Baa2 / Baa3 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 3,000 |  |  |  | 3,000 |
Not rated - Agency (1) |  |  | — |  |  |  | 76,668 |  |  |  | — |  |  |  | — |  |  |  | 76,668 |
Total |  | $ | 38,211 |  |  | $ | 99,374 |  |  | $ | 12,573 |  |  | $ | 3,000 |  |  | $ | 153,158 |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Table Text Block] |
|  | U.S. Treasury securities |  |  | U.S. agency and mortgage-backed securities |  |  | Obligations of states and political subdivisions |  |  | Corporate debt securities |  |  | Total Held to Maturity Securities |
Balance, December 31, 2022 |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Adjustment for adoption of ASU 2016-13 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 134 |  |  |  | 134 |
Provision for credit losses |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 10 |  |  |  | 10 |
Charge-offs of securities |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Recoveries |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (13 | ) |  |  | (13 | )
Balance, September 30, 2023 |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 131 |  |  | $ | 131 |

X
- Definition The tabular disclosure of amortized costs, unrealized gains (losses), and fair values of available-for-sale and held-to-maturity securities. + References No definition available. + Details
Name: | fxnc_ScheduleOfAvailableforsaleAndHeldtomaturityReconciliationTableTextBlock
Namespace Prefix: | fxnc_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of credit quality indicator for investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-5 + Details
Name: | us-gaap_DebtSecuritiesHeldToMaturityCreditQualityIndicatorTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
Name: | us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References No definition available. + Details
Name: | us-gaap_MarketableSecuritiesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of investments in an unrealized loss position for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), including: (a) the aggregate related fair value of investments with unrealized losses, (b) the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-6 + Details
Name: | us-gaap_ScheduleOfTemporaryImpairmentLossesInvestmentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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