Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-25-015084-index-headers.html | 2025-05-07 15:01:28 | |
| 0001437749-25-015084-index.html | 2025-05-07 15:01:28 | |
| 0001437749-25-015084.txt | 2025-05-07 15:01:28 | |
 0001437749-25-015084-xbrl.zip | 12583 | 2025-05-07 15:01:28 |
| ex_811060.htm | 15201 | 2025-05-07 15:01:28 |
| FilingSummary.xml | 1748 | 2025-05-07 15:01:28 |
| Financial_Report.xlsx | 5720 | 2025-05-07 15:01:28 |
| MetaLinks.json | 25294 | 2025-05-07 15:01:28 |
| npk-20250502.xsd | 3570 | 2025-05-07 15:01:28 |
| npk-20250502_def.xml | 11420 | 2025-05-07 15:01:28 |
| npk-20250502_lab.xml | 15309 | 2025-05-07 15:01:28 |
| npk-20250502_pre.xml | 11580 | 2025-05-07 15:01:28 |
| npk20250502_8k.htm | 25837 | 2025-05-07 15:01:28 |
| npk20250502_8k_htm.xml | 2849 | 2025-05-07 15:01:28 |
| R1.htm | 38335 | 2025-05-07 15:01:28 |
| report.css | 2767 | 2025-05-07 15:01:28 |
| Show.js | 1085 | 2025-05-07 15:01:28 |