Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-24-009588-index-headers.html | 2024-03-27 16:05:33 | |
| 0001437749-24-009588-index.html | 2024-03-27 16:05:33 | |
| 0001437749-24-009588.txt | 2024-03-27 16:05:33 | |
 0001437749-24-009588-xbrl.zip | 11550 | 2024-03-27 16:05:33 |
| ex_645938.htm | 4599 | 2024-03-27 16:05:33 |
| FilingSummary.xml | 1748 | 2024-03-27 16:05:33 |
| Financial_Report.xlsx | 5695 | 2024-03-27 16:05:33 |
| MetaLinks.json | 19294 | 2024-03-27 16:05:33 |
| npk-20240322.xsd | 3401 | 2024-03-27 16:05:33 |
| npk-20240322_def.xml | 11421 | 2024-03-27 16:05:33 |
| npk-20240322_lab.xml | 15310 | 2024-03-27 16:05:33 |
| npk-20240322_pre.xml | 11581 | 2024-03-27 16:05:33 |
| npk20240327_8k.htm | 26683 | 2024-03-27 16:05:33 |
| npk20240327_8k_htm.xml | 2837 | 2024-03-27 16:05:33 |
| R1.htm | 38352 | 2024-03-27 16:05:33 |
| report.css | 2767 | 2024-03-27 16:05:33 |
| Show.js | 1085 | 2024-03-27 16:05:33 |