Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-22-003210-index-headers.html | 2022-02-14 11:40:22 | |
| 0001437749-22-003210-index.html | 2022-02-14 11:40:22 | |
| 0001437749-22-003210.txt | 2022-02-14 11:40:22 | |
 0001437749-22-003210-xbrl.zip | 13580 | 2022-02-14 11:40:22 |
| ex_335099.htm | 17374 | 2022-02-14 11:40:22 |
| FilingSummary.xml | 1765 | 2022-02-14 11:40:22 |
| Financial_Report.xlsx | 5671 | 2022-02-14 11:40:22 |
| MetaLinks.json | 18830 | 2022-02-14 11:40:22 |
| npk-20220211.xsd | 3585 | 2022-02-14 11:40:22 |
| npk-20220211_def.xml | 11421 | 2022-02-14 11:40:22 |
| npk-20220211_lab.xml | 15310 | 2022-02-14 11:40:22 |
| npk-20220211_pre.xml | 11581 | 2022-02-14 11:40:22 |
| npk20220211_8k.htm | 26201 | 2022-02-14 11:40:22 |
| npk20220211_8k_htm.xml | 2563 | 2022-02-14 11:40:22 |
| R1.htm | 38837 | 2022-02-14 11:40:22 |
| report.css | 2767 | 2022-02-14 11:40:22 |
| Show.js | 1085 | 2022-02-14 11:40:22 |