Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-25-001833-index-headers.html | 2025-01-24 16:54:38 | |
| 0001437749-25-001833-index.html | 2025-01-24 16:54:38 | |
| 0001437749-25-001833.txt | 2025-01-24 16:54:38 | |
 0001437749-25-001833-xbrl.zip | 11698 | 2025-01-24 16:54:38 |
| ex_769691.htm | 4894 | 2025-01-24 16:54:38 |
| FilingSummary.xml | 1748 | 2025-01-24 16:54:38 |
| Financial_Report.xlsx | 5708 | 2025-01-24 16:54:38 |
| MetaLinks.json | 19294 | 2025-01-24 16:54:38 |
| npk-20250121.xsd | 3401 | 2025-01-24 16:54:38 |
| npk-20250121_def.xml | 11421 | 2025-01-24 16:54:38 |
| npk-20250121_lab.xml | 15310 | 2025-01-24 16:54:38 |
| npk-20250121_pre.xml | 11581 | 2025-01-24 16:54:38 |
| npk20250123_8k.htm | 29067 | 2025-01-24 16:54:38 |
| npk20250123_8k_htm.xml | 2855 | 2025-01-24 16:54:38 |
| R1.htm | 38368 | 2025-01-24 16:54:38 |
| report.css | 2767 | 2025-01-24 16:54:38 |
| Show.js | 1085 | 2025-01-24 16:54:38 |