Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000719402-18-000013-index-headers.html | 2018-05-07 14:41:36 | |
| 0000719402-18-000013-index.html | 2018-05-07 14:41:36 | |
| 0000719402-18-000013.txt | 2018-05-07 14:41:36 | |
 0000719402-18-000013-xbrl.zip | 255028 | 2018-05-07 14:41:36 |
| exhibit31103312018.htm | 16649 | 2018-05-07 14:41:36 |
| exhibit31203312018.htm | 16735 | 2018-05-07 14:41:36 |
| exhibit32103312018.htm | 8442 | 2018-05-07 14:41:36 |
| exhibit32203312018.htm | 8574 | 2018-05-07 14:41:36 |
| FilingSummary.xml | 38935 | 2018-05-07 14:41:36 |
| Financial_Report.xlsx | 90834 | 2018-05-07 14:41:36 |
 first1nationalcorporationa04.jpg | 9995 | 2018-05-07 14:41:36 |
| fxnc-20180331.xml | 3068991 | 2018-05-07 14:41:36 |
| fxnc-20180331.xsd | 51269 | 2018-05-07 14:41:36 |
| fxnc-20180331_cal.xml | 122957 | 2018-05-07 14:41:36 |
| fxnc-20180331_def.xml | 269680 | 2018-05-07 14:41:36 |
| fxnc-20180331_lab.xml | 758590 | 2018-05-07 14:41:36 |
| fxnc-20180331_pre.xml | 471460 | 2018-05-07 14:41:36 |
| fxnc0331201810-q.htm | 1810717 | 2018-05-07 14:41:36 |
| R1.htm | 21944 | 2018-05-07 14:41:36 |
| R10.htm | 21019 | 2018-05-07 14:41:36 |
| R11.htm | 233549 | 2018-05-07 14:41:36 |
| R12.htm | 202090 | 2018-05-07 14:41:36 |
| R13.htm | 327516 | 2018-05-07 14:41:36 |
| R14.htm | 25763 | 2018-05-07 14:41:36 |
| R15.htm | 6905 | 2018-05-07 14:41:36 |
| R16.htm | 67854 | 2018-05-07 14:41:36 |
| R17.htm | 7588 | 2018-05-07 14:41:36 |
| R18.htm | 10193 | 2018-05-07 14:41:36 |
| R19.htm | 17428 | 2018-05-07 14:41:36 |
| R2.htm | 74639 | 2018-05-07 14:41:36 |
| R20.htm | 21395 | 2018-05-07 14:41:36 |
| R21.htm | 197048 | 2018-05-07 14:41:36 |
| R22.htm | 22656 | 2018-05-07 14:41:36 |
| R23.htm | 32456 | 2018-05-07 14:41:36 |
| R24.htm | 20089 | 2018-05-07 14:41:36 |
| R25.htm | 233452 | 2018-05-07 14:41:36 |
| R26.htm | 195310 | 2018-05-07 14:41:36 |
| R27.htm | 324301 | 2018-05-07 14:41:36 |
| R28.htm | 20606 | 2018-05-07 14:41:36 |
| R29.htm | 59498 | 2018-05-07 14:41:36 |
| R3.htm | 27412 | 2018-05-07 14:41:36 |
| R30.htm | 13264 | 2018-05-07 14:41:36 |
| R31.htm | 20860 | 2018-05-07 14:41:36 |
| R32.htm | 187439 | 2018-05-07 14:41:36 |
| R33.htm | 16989 | 2018-05-07 14:41:36 |
| R34.htm | 31353 | 2018-05-07 14:41:36 |
| R35.htm | 43955 | 2018-05-07 14:41:36 |
| R36.htm | 61234 | 2018-05-07 14:41:36 |
| R37.htm | 18084 | 2018-05-07 14:41:36 |
| R38.htm | 60721 | 2018-05-07 14:41:36 |
| R39.htm | 10415 | 2018-05-07 14:41:36 |
| R4.htm | 101189 | 2018-05-07 14:41:36 |
| R40.htm | 27394 | 2018-05-07 14:41:36 |
| R41.htm | 11908 | 2018-05-07 14:41:36 |
| R42.htm | 59637 | 2018-05-07 14:41:36 |
| R43.htm | 51393 | 2018-05-07 14:41:36 |
| R44.htm | 70177 | 2018-05-07 14:41:36 |
| R45.htm | 37717 | 2018-05-07 14:41:36 |
| R46.htm | 13236 | 2018-05-07 14:41:36 |
| R47.htm | 16971 | 2018-05-07 14:41:36 |
| R48.htm | 11597 | 2018-05-07 14:41:36 |
| R49.htm | 14814 | 2018-05-07 14:41:36 |
| R5.htm | 16703 | 2018-05-07 14:41:36 |
| R50.htm | 11568 | 2018-05-07 14:41:36 |
| R51.htm | 55280 | 2018-05-07 14:41:36 |
| R52.htm | 10196 | 2018-05-07 14:41:36 |
| R53.htm | 16988 | 2018-05-07 14:41:36 |
| R54.htm | 12550 | 2018-05-07 14:41:36 |
| R55.htm | 8723 | 2018-05-07 14:41:36 |
| R56.htm | 20777 | 2018-05-07 14:41:36 |
| R57.htm | 28179 | 2018-05-07 14:41:36 |
| R58.htm | 15570 | 2018-05-07 14:41:36 |
| R59.htm | 15160 | 2018-05-07 14:41:36 |
| R6.htm | 7684 | 2018-05-07 14:41:36 |
| R60.htm | 9864 | 2018-05-07 14:41:36 |
| R61.htm | 60993 | 2018-05-07 14:41:36 |
| R62.htm | 36212 | 2018-05-07 14:41:36 |
| R63.htm | 25411 | 2018-05-07 14:41:36 |
| R64.htm | 33830 | 2018-05-07 14:41:36 |
| R7.htm | 105415 | 2018-05-07 14:41:36 |
| R8.htm | 29327 | 2018-05-07 14:41:36 |
| R9.htm | 11787 | 2018-05-07 14:41:36 |
| report.css | 2767 | 2018-05-07 14:41:36 |
| Show.js | 1410 | 2018-05-07 14:41:36 |