Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-25-004749-index-headers.html | 2025-02-21 16:26:39 | |
| 0001437749-25-004749-index.html | 2025-02-21 16:26:39 | |
| 0001437749-25-004749.txt | 2025-02-21 16:26:39 | |
 0001437749-25-004749-xbrl.zip | 13297 | 2025-02-21 16:26:39 |
| ex_780995.htm | 17597 | 2025-02-21 16:26:39 |
| FilingSummary.xml | 1750 | 2025-02-21 16:26:39 |
| Financial_Report.xlsx | 5694 | 2025-02-21 16:26:39 |
| MetaLinks.json | 19294 | 2025-02-21 16:26:39 |
| npk-20250221.xsd | 3401 | 2025-02-21 16:26:39 |
| npk-20250221_def.xml | 11421 | 2025-02-21 16:26:39 |
| npk-20250221_lab.xml | 15310 | 2025-02-21 16:26:39 |
| npk-20250221_pre.xml | 11581 | 2025-02-21 16:26:39 |
| npk20250221_8k.htm | 26951 | 2025-02-21 16:26:39 |
| npk20250221_8k_htm.xml | 2837 | 2025-02-21 16:26:39 |
| R1.htm | 38353 | 2025-02-21 16:26:39 |
| report.css | 2767 | 2025-02-21 16:26:39 |
| Show.js | 1085 | 2025-02-21 16:26:39 |