Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-21-024738-index-headers.html | 2021-11-01 16:02:37 | |
| 0001437749-21-024738-index.html | 2021-11-01 16:02:37 | |
| 0001437749-21-024738.txt | 2021-11-01 16:02:37 | |
 0001437749-21-024738-xbrl.zip | 12867 | 2021-11-01 16:02:37 |
| ex_300241.htm | 21490 | 2021-11-01 16:02:37 |
| FilingSummary.xml | 1751 | 2021-11-01 16:02:37 |
| Financial_Report.xlsx | 5670 | 2021-11-01 16:02:37 |
| MetaLinks.json | 18829 | 2021-11-01 16:02:37 |
| npk-20211029.xsd | 3585 | 2021-11-01 16:02:37 |
| npk-20211029_def.xml | 11421 | 2021-11-01 16:02:37 |
| npk-20211029_lab.xml | 15310 | 2021-11-01 16:02:37 |
| npk-20211029_pre.xml | 11581 | 2021-11-01 16:02:37 |
| npk20211101_8k.htm | 31053 | 2021-11-01 16:02:37 |
| npk20211101_8k_htm.xml | 2563 | 2021-11-01 16:02:37 |
| R1.htm | 38835 | 2021-11-01 16:02:37 |
| report.css | 2767 | 2021-11-01 16:02:37 |
| Show.js | 1085 | 2021-11-01 16:02:37 |