XML 40 R28.htm IDEA: XBRL DOCUMENT
v3.21.2

Note 2 - Securities (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2021
Notes Tables |
Schedule of Available-for-sale and Held-to-maturity Reconciliation [Table Text Block] |
|  | June 30, 2021 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized (Losses) |  |  | Fair Value |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 19,949 |  |  | $ | 29 |  |  | $ | (32 | ) |  | $ | 19,946 |
U.S. agency and mortgage-backed securities |  |  | 141,497 |  |  |  | 2,070 |  |  |  | (739 | ) |  |  | 142,828 |
Obligations of states and political subdivisions |  |  | 58,644 |  |  |  | 1,051 |  |  |  | (233 | ) |  |  | 59,462 |
Total securities available for sale |  | $ | 220,090 |  |  | $ | 3,150 |  |  | $ | (1,004 | ) |  | $ | 222,236 |
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities |  | $ | 7,950 |  |  | $ | 157 |  |  | $ | — |  |  | $ | 8,107 |
Obligations of states and political subdivisions |  |  | 2,948 |  |  |  | 108 |  |  |  | — |  |  |  | 3,056 |
Total securities held to maturity |  | $ | 10,898 |  |  | $ | 265 |  |  | $ | — |  |  | $ | 11,163 |
Total securities |  | $ | 230,988 |  |  | $ | 3,415 |  |  | $ | (1,004 | ) |  | $ | 233,399 |
|  | December 31, 2020 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized (Losses) |  |  | Fair Value |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities |  | $ | 98,848 |  |  | $ | 2,830 |  |  | $ | (80 | ) |  | $ | 101,598 |
Obligations of states and political subdivisions |  |  | 37,507 |  |  |  | 1,122 |  |  |  | (2 | ) |  |  | 38,627 |
Total securities available for sale |  | $ | 136,355 |  |  | $ | 3,952 |  |  | $ | (82 | ) |  | $ | 140,225 |
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities |  | $ | 9,588 |  |  | $ | 264 |  |  | $ | — |  |  | $ | 9,852 |
Obligations of states and political subdivisions |  |  | 3,146 |  |  |  | 140 |  |  |  | — |  |  |  | 3,286 |
Corporate debt securities |  |  | 1,500 |  |  |  | 105 |  |  |  | — |  |  |  | 1,605 |
Total securities held to maturity |  | $ | 14,234 |  |  | $ | 509 |  |  | $ | — |  |  | $ | 14,743 |
Total securities |  | $ | 150,589 |  |  | $ | 4,461 |  |  | $ | (82 | ) |  | $ | 154,968 |
Schedule of Temporary Impairment Losses, Investments [Table Text Block] |
|  | June 30, 2021 |
|  | 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 |  | $ | 9,938 |  |  | $ | (32 | ) |  | $ | — |  |  | $ | — |  |  | $ | 9,938 |  |  | $ | (32 | )
U.S. agency and mortgage-backed securities |  |  | 59,563 |  |  |  | (739 | ) |  |  | — |  |  |  | — |  |  |  | 59,563 |  |  |  | (739 | )
Obligations of states and political subdivisions |  |  | 20,523 |  |  |  | (233 | ) |  |  | — |  |  |  | — |  |  |  | 20,523 |  |  |  | (233 | )
Total securities available for sale |  | $ | 90,024 |  |  | $ | (1,004 | ) |  | $ | — |  |  | $ | — |  |  | $ | 90,024 |  |  | $ | (1,004 | )
|  | December 31, 2020 |
|  | 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. agency and mortgage-backed securities |  | $ | 17,367 |  |  | $ | (80 | ) |  | $ | — |  |  | $ | — |  |  | $ | 17,367 |  |  | $ | (80 | )
Obligations of states and political subdivisions |  |  | 1,020 |  |  |  | (2 | ) |  |  | — |  |  |  | — |  |  |  | 1,020 |  |  |  | (2 | )
Total securities available for sale |  | $ | 18,387 |  |  | $ | (82 | ) |  | $ | — |  |  | $ | — |  |  | $ | 18,387 |  |  | $ | (82 | )
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 |  | $ | 4,720 |  |  | $ | 4,769 |  |  | $ | 2,612 |  |  | $ | 2,630 |
Due after one year through five years |  |  | 14,941 |  |  |  | 15,015 |  |  |  | 2,124 |  |  |  | 2,211 |
Due after five years through ten years |  |  | 61,798 |  |  |  | 62,643 |  |  |  | 1,707 |  |  |  | 1,756 |
Due after ten years |  |  | 138,631 |  |  |  | 139,809 |  |  |  | 4,455 |  |  |  | 4,566 |
|  | $ | 220,090 |  |  | $ | 222,236 |  |  | $ | 10,898 |  |  | $ | 11,163 |
Marketable Securities [Table Text Block] |
|  | June 30, 2021 |  |  | December 31, 2020 |
Federal Home Loan Bank stock |  | $ | 573 |  |  | $ | 818 |
Federal Reserve Bank stock |  |  | 981 |  |  |  | 980 |
Community Bankers’ Bank stock |  |  | 77 |  |  |  | 77 |
|  | $ | 1,631 |  |  | $ | 1,875 |

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 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/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27290-111563 + 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