Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-23-013684-index-headers.html | 2023-05-10 17:31:36 | |
| 0001437749-23-013684-index.html | 2023-05-10 17:31:36 | |
| 0001437749-23-013684.txt | 2023-05-10 17:31:36 | |
 0001437749-23-013684-xbrl.zip | 253646 | 2023-05-10 17:31:36 |
| americannb20230331_10q.htm | 3051974 | 2023-05-10 17:31:36 |
| americannb20230331_10q_htm.xml | 3759409 | 2023-05-10 17:31:36 |
| amnb-20230331.xsd | 78033 | 2023-05-10 17:31:36 |
| amnb-20230331_cal.xml | 59843 | 2023-05-10 17:31:36 |
| amnb-20230331_def.xml | 601312 | 2023-05-10 17:31:36 |
| amnb-20230331_lab.xml | 478126 | 2023-05-10 17:31:36 |
| amnb-20230331_pre.xml | 640890 | 2023-05-10 17:31:36 |
| ex_484694.htm | 9390 | 2023-05-10 17:31:36 |
| ex_484695.htm | 9827 | 2023-05-10 17:31:36 |
| ex_484696.htm | 4030 | 2023-05-10 17:31:36 |
| ex_484697.htm | 4054 | 2023-05-10 17:31:36 |
| FilingSummary.xml | 55548 | 2023-05-10 17:31:36 |
| Financial_Report.xlsx | 132743 | 2023-05-10 17:31:36 |
| MetaLinks.json | 989056 | 2023-05-10 17:31:36 |
| R1.htm | 51776 | 2023-05-10 17:31:36 |
| R10.htm | 121253 | 2023-05-10 17:31:36 |
| R11.htm | 485027 | 2023-05-10 17:31:36 |
| R12.htm | 143487 | 2023-05-10 17:31:36 |
| R13.htm | 13620 | 2023-05-10 17:31:36 |
| R14.htm | 31394 | 2023-05-10 17:31:36 |
| R15.htm | 11871 | 2023-05-10 17:31:36 |
| R16.htm | 28187 | 2023-05-10 17:31:36 |
| R17.htm | 31393 | 2023-05-10 17:31:36 |
| R18.htm | 19497 | 2023-05-10 17:31:36 |
| R19.htm | 19306 | 2023-05-10 17:31:36 |
| R2.htm | 110214 | 2023-05-10 17:31:36 |
| R20.htm | 210658 | 2023-05-10 17:31:36 |
| R21.htm | 51904 | 2023-05-10 17:31:36 |
| R22.htm | 21156 | 2023-05-10 17:31:36 |
| R23.htm | 35627 | 2023-05-10 17:31:36 |
| R24.htm | 67972 | 2023-05-10 17:31:36 |
| R25.htm | 45901 | 2023-05-10 17:31:36 |
| R26.htm | 106069 | 2023-05-10 17:31:36 |
| R27.htm | 483618 | 2023-05-10 17:31:36 |
| R28.htm | 138034 | 2023-05-10 17:31:36 |
| R29.htm | 10182 | 2023-05-10 17:31:36 |
| R3.htm | 16649 | 2023-05-10 17:31:36 |
| R30.htm | 30068 | 2023-05-10 17:31:36 |
| R31.htm | 10836 | 2023-05-10 17:31:36 |
| R32.htm | 22946 | 2023-05-10 17:31:36 |
| R33.htm | 26847 | 2023-05-10 17:31:36 |
| R34.htm | 12243 | 2023-05-10 17:31:36 |
| R35.htm | 16771 | 2023-05-10 17:31:36 |
| R36.htm | 198847 | 2023-05-10 17:31:36 |
| R37.htm | 46429 | 2023-05-10 17:31:36 |
| R38.htm | 19671 | 2023-05-10 17:31:36 |
| R39.htm | 34130 | 2023-05-10 17:31:36 |
| R4.htm | 125368 | 2023-05-10 17:31:36 |
| R40.htm | 20866 | 2023-05-10 17:31:36 |
| R41.htm | 88844 | 2023-05-10 17:31:36 |
| R42.htm | 43639 | 2023-05-10 17:31:36 |
| R43.htm | 26736 | 2023-05-10 17:31:36 |
| R44.htm | 7787 | 2023-05-10 17:31:36 |
| R45.htm | 34832 | 2023-05-10 17:31:36 |
| R46.htm | 5185 | 2023-05-10 17:31:36 |
| R47.htm | 21357 | 2023-05-10 17:31:36 |
| R48.htm | 9187 | 2023-05-10 17:31:36 |
| R49.htm | 9086 | 2023-05-10 17:31:36 |
| R5.htm | 37558 | 2023-05-10 17:31:36 |
| R50.htm | 66300 | 2023-05-10 17:31:36 |
| R51.htm | 50123 | 2023-05-10 17:31:36 |
| R52.htm | 16915 | 2023-05-10 17:31:36 |
| R53.htm | 10990 | 2023-05-10 17:31:36 |
| R54.htm | 69667 | 2023-05-10 17:31:36 |
| R55.htm | 239732 | 2023-05-10 17:31:36 |
| R56.htm | 3438 | 2023-05-10 17:31:36 |
| R57.htm | 141959 | 2023-05-10 17:31:36 |
| R58.htm | 9944 | 2023-05-10 17:31:36 |
| R59.htm | 10755 | 2023-05-10 17:31:36 |
| R6.htm | 48200 | 2023-05-10 17:31:36 |
| R60.htm | 20963 | 2023-05-10 17:31:36 |
| R61.htm | 22731 | 2023-05-10 17:31:36 |
| R62.htm | 4211 | 2023-05-10 17:31:36 |
| R63.htm | 11124 | 2023-05-10 17:31:36 |
| R64.htm | 44668 | 2023-05-10 17:31:36 |
| R65.htm | 15607 | 2023-05-10 17:31:36 |
| R66.htm | 17952 | 2023-05-10 17:31:36 |
| R67.htm | 38193 | 2023-05-10 17:31:36 |
| R68.htm | 21466 | 2023-05-10 17:31:36 |
| R69.htm | 4918 | 2023-05-10 17:31:36 |
| R7.htm | 15683 | 2023-05-10 17:31:36 |
| R70.htm | 23072 | 2023-05-10 17:31:36 |
| R71.htm | 53385 | 2023-05-10 17:31:36 |
| R72.htm | 11539 | 2023-05-10 17:31:36 |
| R73.htm | 10835 | 2023-05-10 17:31:36 |
| R74.htm | 66463 | 2023-05-10 17:31:36 |
| R75.htm | 2937 | 2023-05-10 17:31:36 |
| R76.htm | 57417 | 2023-05-10 17:31:36 |
| R77.htm | 19347 | 2023-05-10 17:31:36 |
| R78.htm | 28561 | 2023-05-10 17:31:36 |
| R79.htm | 9922 | 2023-05-10 17:31:36 |
| R8.htm | 98367 | 2023-05-10 17:31:36 |
| R9.htm | 67582 | 2023-05-10 17:31:36 |
| report.css | 2767 | 2023-05-10 17:31:36 |
| Show.js | 1085 | 2023-05-10 17:31:36 |