Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000918541-21-000006-index-headers.html | 2021-05-07 10:41:28 | |
| 0000918541-21-000006-index.html | 2021-05-07 10:41:28 | |
| 0000918541-21-000006.txt | 2021-05-07 10:41:28 | |
 0000918541-21-000006-xbrl.zip | 299869 | 2021-05-07 10:41:28 |
| FilingSummary.xml | 45913 | 2021-05-07 10:41:28 |
| Financial_Report.xlsx | 102335 | 2021-05-07 10:41:28 |
| MetaLinks.json | 736214 | 2021-05-07 10:41:28 |
| nnbr-20210331.htm | 1544060 | 2021-05-07 10:41:28 |
| nnbr-20210331.xsd | 56265 | 2021-05-07 10:41:28 |
| nnbr-20210331_cal.xml | 113377 | 2021-05-07 10:41:28 |
| nnbr-20210331_def.xml | 355292 | 2021-05-07 10:41:28 |
 nnbr-20210331_g1.jpg | 7045 | 2021-05-07 10:41:28 |
| nnbr-20210331_htm.xml | 1530270 | 2021-05-07 10:41:28 |
| nnbr-20210331_lab.xml | 711249 | 2021-05-07 10:41:28 |
| nnbr-20210331_pre.xml | 516157 | 2021-05-07 10:41:28 |
| q12021ex311.htm | 12610 | 2021-05-07 10:41:28 |
| q12021ex312.htm | 11997 | 2021-05-07 10:41:28 |
| q12021ex321.htm | 6134 | 2021-05-07 10:41:28 |
| q12021ex322.htm | 6120 | 2021-05-07 10:41:28 |
| R1.htm | 52208 | 2021-05-07 10:41:28 |
| R10.htm | 41944 | 2021-05-07 10:41:28 |
| R11.htm | 36555 | 2021-05-07 10:41:28 |
| R12.htm | 10859 | 2021-05-07 10:41:28 |
| R13.htm | 5832 | 2021-05-07 10:41:28 |
| R14.htm | 16650 | 2021-05-07 10:41:28 |
| R15.htm | 8658 | 2021-05-07 10:41:28 |
| R16.htm | 8264 | 2021-05-07 10:41:28 |
| R17.htm | 26611 | 2021-05-07 10:41:28 |
| R18.htm | 27484 | 2021-05-07 10:41:28 |
| R19.htm | 12304 | 2021-05-07 10:41:28 |
| R2.htm | 119407 | 2021-05-07 10:41:28 |
| R20.htm | 21909 | 2021-05-07 10:41:28 |
| R21.htm | 80226 | 2021-05-07 10:41:28 |
| R22.htm | 66700 | 2021-05-07 10:41:28 |
| R23.htm | 34590 | 2021-05-07 10:41:28 |
| R24.htm | 49008 | 2021-05-07 10:41:28 |
| R25.htm | 58875 | 2021-05-07 10:41:28 |
| R26.htm | 12191 | 2021-05-07 10:41:28 |
| R27.htm | 40005 | 2021-05-07 10:41:28 |
| R28.htm | 30992 | 2021-05-07 10:41:28 |
| R29.htm | 11882 | 2021-05-07 10:41:28 |
| R3.htm | 102458 | 2021-05-07 10:41:28 |
| R30.htm | 16950 | 2021-05-07 10:41:28 |
| R31.htm | 8203 | 2021-05-07 10:41:28 |
| R32.htm | 17777 | 2021-05-07 10:41:28 |
| R33.htm | 13879 | 2021-05-07 10:41:28 |
| R34.htm | 17125 | 2021-05-07 10:41:28 |
| R35.htm | 75761 | 2021-05-07 10:41:28 |
| R36.htm | 70597 | 2021-05-07 10:41:28 |
| R37.htm | 34318 | 2021-05-07 10:41:28 |
| R38.htm | 48725 | 2021-05-07 10:41:28 |
| R39.htm | 50546 | 2021-05-07 10:41:28 |
| R4.htm | 25776 | 2021-05-07 10:41:28 |
| R40.htm | 23973 | 2021-05-07 10:41:28 |
| R41.htm | 44725 | 2021-05-07 10:41:28 |
| R42.htm | 17910 | 2021-05-07 10:41:28 |
| R43.htm | 17735 | 2021-05-07 10:41:28 |
| R44.htm | 37385 | 2021-05-07 10:41:28 |
| R45.htm | 9279 | 2021-05-07 10:41:28 |
| R46.htm | 11836 | 2021-05-07 10:41:28 |
| R47.htm | 10395 | 2021-05-07 10:41:28 |
| R48.htm | 12747 | 2021-05-07 10:41:28 |
| R49.htm | 6132 | 2021-05-07 10:41:28 |
| R5.htm | 47616 | 2021-05-07 10:41:28 |
| R50.htm | 13630 | 2021-05-07 10:41:28 |
| R51.htm | 6814 | 2021-05-07 10:41:28 |
| R52.htm | 77976 | 2021-05-07 10:41:28 |
| R53.htm | 30890 | 2021-05-07 10:41:28 |
| R54.htm | 13987 | 2021-05-07 10:41:28 |
| R55.htm | 13273 | 2021-05-07 10:41:28 |
| R56.htm | 9675 | 2021-05-07 10:41:28 |
| R57.htm | 48100 | 2021-05-07 10:41:28 |
| R58.htm | 19950 | 2021-05-07 10:41:28 |
| R59.htm | 72083 | 2021-05-07 10:41:28 |
| R6.htm | 6895 | 2021-05-07 10:41:28 |
| R60.htm | 15856 | 2021-05-07 10:41:28 |
| R61.htm | 34784 | 2021-05-07 10:41:28 |
| R62.htm | 11719 | 2021-05-07 10:41:28 |
| R63.htm | 30161 | 2021-05-07 10:41:28 |
| R64.htm | 33963 | 2021-05-07 10:41:28 |
| R65.htm | 12977 | 2021-05-07 10:41:28 |
| R66.htm | 11009 | 2021-05-07 10:41:28 |
| R67.htm | 50855 | 2021-05-07 10:41:28 |
| R68.htm | 72621 | 2021-05-07 10:41:28 |
| R69.htm | 12557 | 2021-05-07 10:41:28 |
| R7.htm | 91062 | 2021-05-07 10:41:28 |
| R70.htm | 6262 | 2021-05-07 10:41:28 |
| R71.htm | 41480 | 2021-05-07 10:41:28 |
| R72.htm | 21140 | 2021-05-07 10:41:28 |
| R73.htm | 11880 | 2021-05-07 10:41:28 |
| R74.htm | 11366 | 2021-05-07 10:41:28 |
| R75.htm | 18709 | 2021-05-07 10:41:28 |
| R8.htm | 5325 | 2021-05-07 10:41:28 |
| R9.htm | 12337 | 2021-05-07 10:41:28 |
| report.css | 2767 | 2021-05-07 10:41:28 |
| Show.js | 1085 | 2021-05-07 10:41:28 |