Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-24-018141-index-headers.html | 2024-05-23 16:02:01 | |
| 0001437749-24-018141-index.html | 2024-05-23 16:02:01 | |
| 0001437749-24-018141.txt | 2024-05-23 16:02:01 | |
 0001437749-24-018141-xbrl.zip | 13927 | 2024-05-23 16:02:01 |
| ex_678597.htm | 9775 | 2024-05-23 16:02:01 |
| FilingSummary.xml | 1753 | 2024-05-23 16:02:01 |
| Financial_Report.xlsx | 5695 | 2024-05-23 16:02:01 |
| MetaLinks.json | 19294 | 2024-05-23 16:02:01 |
| npk-20240517.xsd | 3401 | 2024-05-23 16:02:01 |
| npk-20240517_def.xml | 11421 | 2024-05-23 16:02:01 |
| npk-20240517_lab.xml | 15310 | 2024-05-23 16:02:01 |
| npk-20240517_pre.xml | 11581 | 2024-05-23 16:02:01 |
| npk20240522_8k.htm | 35964 | 2024-05-23 16:02:01 |
| npk20240522_8k_htm.xml | 2837 | 2024-05-23 16:02:01 |
| R1.htm | 38355 | 2024-05-23 16:02:01 |
| report.css | 2767 | 2024-05-23 16:02:01 |
| Show.js | 1085 | 2024-05-23 16:02:01 |