Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001213900-23-048155-index-headers.html | 2023-06-12 16:11:31 | |
| 0001213900-23-048155-index.html | 2023-06-12 16:11:31 | |
| 0001213900-23-048155.txt | 2023-06-12 16:11:31 | |
 0001213900-23-048155-xbrl.zip | 18636 | 2023-06-12 16:11:31 |
| ex991_1.htm | 16358 | 2023-06-12 16:11:31 |
| FilingSummary.xml | 1687 | 2023-06-12 16:11:31 |
| Financial_Report.xlsx | 5792 | 2023-06-12 16:11:31 |
| MetaLinks.json | 20121 | 2023-06-12 16:11:31 |
| nn-20230608.htm | 51711 | 2023-06-12 16:11:31 |
| nn-20230608.xsd | 4675 | 2023-06-12 16:11:31 |
| nn-20230608_cal.xml | 865 | 2023-06-12 16:11:31 |
| nn-20230608_def.xml | 17750 | 2023-06-12 16:11:31 |
| nn-20230608_htm.xml | 4906 | 2023-06-12 16:11:31 |
| nn-20230608_lab.xml | 22904 | 2023-06-12 16:11:31 |
| nn-20230608_pre.xml | 16633 | 2023-06-12 16:11:31 |
| R1.htm | 43400 | 2023-06-12 16:11:31 |
| report.css | 2767 | 2023-06-12 16:11:31 |
| Show.js | 1085 | 2023-06-12 16:11:31 |