Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000897101-25-000213-index-headers.html | 2025-04-15 09:28:09 | |
| 0000897101-25-000213-index.html | 2025-04-15 09:28:09 | |
| 0000897101-25-000213.txt | 2025-04-15 09:28:09 | |
 0000897101-25-000213-xbrl.zip | 618709 | 2025-04-15 09:28:09 |
| FilingSummary.xml | 3502 | 2025-04-15 09:28:09 |
 img001.jpg | 12292 | 2025-04-15 09:28:09 |
 img002.jpg | 9879 | 2025-04-15 09:28:09 |
 img003.jpg | 97459 | 2025-04-15 09:28:09 |
 img004.jpg | 93687 | 2025-04-15 09:28:09 |
 img005.jpg | 314677 | 2025-04-15 09:28:09 |
 img006.jpg | 232850 | 2025-04-15 09:28:09 |
| MetaLinks.json | 88524 | 2025-04-15 09:28:09 |
| npk-20241231.xsd | 4534 | 2025-04-15 09:28:09 |
| npk-20241231_def.xml | 7512 | 2025-04-15 09:28:09 |
| npk-20241231_lab.xml | 58213 | 2025-04-15 09:28:09 |
| npk-20241231_pre.xml | 43006 | 2025-04-15 09:28:09 |
| npk250308-1.htm | 424977 | 2025-04-15 09:28:09 |
| npk250308-1_htm.xml | 149019 | 2025-04-15 09:28:09 |
| R1.htm | 8920 | 2025-04-15 09:28:09 |
| R2.htm | 157778 | 2025-04-15 09:28:09 |
| R3.htm | 5023 | 2025-04-15 09:28:09 |
| R4.htm | 4377 | 2025-04-15 09:28:09 |
| report.css | 2767 | 2025-04-15 09:28:09 |
| Show.js | 1085 | 2025-04-15 09:28:09 |