Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-24-013994-index-headers.html | 2024-04-30 16:39:46 | |
| 0001437749-24-013994-index.html | 2024-04-30 16:39:46 | |
| 0001437749-24-013994.txt | 2024-04-30 16:39:46 | |
 0001437749-24-013994-xbrl.zip | 13313 | 2024-04-30 16:39:46 |
| ex_663953.htm | 17126 | 2024-04-30 16:39:46 |
| FilingSummary.xml | 1751 | 2024-04-30 16:39:46 |
| Financial_Report.xlsx | 5694 | 2024-04-30 16:39:46 |
| MetaLinks.json | 19294 | 2024-04-30 16:39:46 |
| npk-20240426.xsd | 3401 | 2024-04-30 16:39:46 |
| npk-20240426_def.xml | 11421 | 2024-04-30 16:39:46 |
| npk-20240426_lab.xml | 15310 | 2024-04-30 16:39:46 |
| npk-20240426_pre.xml | 11581 | 2024-04-30 16:39:46 |
| npk20240429_8k.htm | 24804 | 2024-04-30 16:39:46 |
| npk20240429_8k_htm.xml | 2837 | 2024-04-30 16:39:46 |
| R1.htm | 38355 | 2024-04-30 16:39:46 |
| report.css | 2767 | 2024-04-30 16:39:46 |
| Show.js | 1085 | 2024-04-30 16:39:46 |