Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001213900-24-040871-index-headers.html | 2024-05-08 16:12:07 | |
| 0001213900-24-040871-index.html | 2024-05-08 16:12:07 | |
| 0001213900-24-040871.txt | 2024-05-08 16:12:07 | |
 0001213900-24-040871-xbrl.zip | 269975 | 2024-05-08 16:12:07 |
| ex101_1.htm | 228600 | 2024-05-08 16:12:07 |
| ex102_2.htm | 262047 | 2024-05-08 16:12:07 |
| ex103_3.htm | 131596 | 2024-05-08 16:12:07 |
| ex311_4.htm | 12763 | 2024-05-08 16:12:07 |
| ex312_5.htm | 10422 | 2024-05-08 16:12:07 |
| ex321_6.htm | 9333 | 2024-05-08 16:12:07 |
| FilingSummary.xml | 29163 | 2024-05-08 16:12:07 |
| Financial_Report.xlsx | 68866 | 2024-05-08 16:12:07 |
| MetaLinks.json | 698921 | 2024-05-08 16:12:07 |
| nn-20240331.htm | 1317155 | 2024-05-08 16:12:07 |
| nn-20240331.xsd | 48609 | 2024-05-08 16:12:07 |
| nn-20240331_cal.xml | 76460 | 2024-05-08 16:12:07 |
| nn-20240331_def.xml | 255568 | 2024-05-08 16:12:07 |
| nn-20240331_htm.xml | 887439 | 2024-05-08 16:12:07 |
| nn-20240331_lab.xml | 821642 | 2024-05-08 16:12:07 |
| nn-20240331_pre.xml | 430647 | 2024-05-08 16:12:07 |
| R1.htm | 54907 | 2024-05-08 16:12:07 |
| R10.htm | 78167 | 2024-05-08 16:12:07 |
| R11.htm | 15912 | 2024-05-08 16:12:07 |
| R12.htm | 14803 | 2024-05-08 16:12:07 |
| R13.htm | 82771 | 2024-05-08 16:12:07 |
| R14.htm | 20540 | 2024-05-08 16:12:07 |
| R15.htm | 10523 | 2024-05-08 16:12:07 |
| R16.htm | 10158 | 2024-05-08 16:12:07 |
| R17.htm | 8163 | 2024-05-08 16:12:07 |
| R18.htm | 9662 | 2024-05-08 16:12:07 |
| R19.htm | 6879 | 2024-05-08 16:12:07 |
| R2.htm | 106271 | 2024-05-08 16:12:07 |
| R20.htm | 18158 | 2024-05-08 16:12:07 |
| R21.htm | 137100 | 2024-05-08 16:12:07 |
| R22.htm | 71044 | 2024-05-08 16:12:07 |
| R23.htm | 16714 | 2024-05-08 16:12:07 |
| R24.htm | 78145 | 2024-05-08 16:12:07 |
| R25.htm | 78123 | 2024-05-08 16:12:07 |
| R26.htm | 20928 | 2024-05-08 16:12:07 |
| R27.htm | 17768 | 2024-05-08 16:12:07 |
| R28.htm | 13911 | 2024-05-08 16:12:07 |
| R29.htm | 11657 | 2024-05-08 16:12:07 |
| R3.htm | 14746 | 2024-05-08 16:12:07 |
| R30.htm | 25453 | 2024-05-08 16:12:07 |
| R31.htm | 13531 | 2024-05-08 16:12:07 |
| R32.htm | 8486 | 2024-05-08 16:12:07 |
| R33.htm | 15490 | 2024-05-08 16:12:07 |
| R34.htm | 9594 | 2024-05-08 16:12:07 |
| R35.htm | 19569 | 2024-05-08 16:12:07 |
| R36.htm | 14630 | 2024-05-08 16:12:07 |
| R37.htm | 23388 | 2024-05-08 16:12:07 |
| R38.htm | 21077 | 2024-05-08 16:12:07 |
| R39.htm | 43044 | 2024-05-08 16:12:07 |
| R4.htm | 85121 | 2024-05-08 16:12:07 |
| R40.htm | 17030 | 2024-05-08 16:12:07 |
| R41.htm | 8217 | 2024-05-08 16:12:07 |
| R42.htm | 71340 | 2024-05-08 16:12:07 |
| R43.htm | 44295 | 2024-05-08 16:12:07 |
| R44.htm | 21153 | 2024-05-08 16:12:07 |
| R45.htm | 15668 | 2024-05-08 16:12:07 |
| R5.htm | 60292 | 2024-05-08 16:12:07 |
| R6.htm | 83527 | 2024-05-08 16:12:07 |
| R7.htm | 12906 | 2024-05-08 16:12:07 |
| R8.htm | 106865 | 2024-05-08 16:12:07 |
| R9.htm | 17635 | 2024-05-08 16:12:07 |
| report.css | 2767 | 2024-05-08 16:12:07 |
| Show.js | 1085 | 2024-05-08 16:12:07 |