Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-26-003213-index-headers.html | 2026-02-05 16:25:12 | |
| 0001437749-26-003213-index.html | 2026-02-05 16:25:12 | |
| 0001437749-26-003213.txt | 2026-02-05 16:25:12 | |
 0001437749-26-003213-xbrl.zip | 12086 | 2026-02-05 16:25:12 |
| ex_917250.htm | 5639 | 2026-02-05 16:25:12 |
| FilingSummary.xml | 1748 | 2026-02-05 16:25:12 |
| MetaLinks.json | 25294 | 2026-02-05 16:25:12 |
| npk-20260130.xsd | 3570 | 2026-02-05 16:25:12 |
| npk-20260130_def.xml | 11420 | 2026-02-05 16:25:12 |
| npk-20260130_lab.xml | 15309 | 2026-02-05 16:25:12 |
| npk-20260130_pre.xml | 11580 | 2026-02-05 16:25:12 |
| npk20260205_8k.htm | 28997 | 2026-02-05 16:25:12 |
| npk20260205_8k_htm.xml | 2849 | 2026-02-05 16:25:12 |
| R1.htm | 38336 | 2026-02-05 16:25:12 |
| report.css | 2767 | 2026-02-05 16:25:12 |
| Show.js | 1084 | 2026-02-05 16:25:12 |