Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-24-024325-index-headers.html | 2024-08-01 17:01:44 | |
| 0001437749-24-024325-index.html | 2024-08-01 17:01:44 | |
| 0001437749-24-024325.txt | 2024-08-01 17:01:44 | |
 0001437749-24-024325-xbrl.zip | 12576 | 2024-08-01 17:01:44 |
| ex_706927.htm | 23585 | 2024-08-01 17:01:44 |
| FilingSummary.xml | 1751 | 2024-08-01 17:01:44 |
| Financial_Report.xlsx | 5695 | 2024-08-01 17:01:44 |
| MetaLinks.json | 19294 | 2024-08-01 17:01:44 |
| npk-20240726.xsd | 3400 | 2024-08-01 17:01:44 |
| npk-20240726_def.xml | 11420 | 2024-08-01 17:01:44 |
| npk-20240726_lab.xml | 15309 | 2024-08-01 17:01:44 |
| npk-20240726_pre.xml | 11580 | 2024-08-01 17:01:44 |
| npk20240801_8k.htm | 25896 | 2024-08-01 17:01:44 |
| npk20240801_8k_htm.xml | 2837 | 2024-08-01 17:01:44 |
| R1.htm | 38355 | 2024-08-01 17:01:44 |
| report.css | 2767 | 2024-08-01 17:01:44 |
| Show.js | 1085 | 2024-08-01 17:01:44 |