Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-21-018139-index-headers.html | 2021-08-02 16:03:18 | |
| 0001437749-21-018139-index.html | 2021-08-02 16:03:18 | |
| 0001437749-21-018139.txt | 2021-08-02 16:03:18 | |
 0001437749-21-018139-xbrl.zip | 12763 | 2021-08-02 16:03:18 |
| ex_270372.htm | 21941 | 2021-08-02 16:03:18 |
| FilingSummary.xml | 1757 | 2021-08-02 16:03:18 |
| Financial_Report.xlsx | 5672 | 2021-08-02 16:03:18 |
| MetaLinks.json | 19324 | 2021-08-02 16:03:18 |
| npk-20210730.xsd | 3692 | 2021-08-02 16:03:18 |
| npk-20210730_def.xml | 11582 | 2021-08-02 16:03:18 |
| npk-20210730_lab.xml | 15465 | 2021-08-02 16:03:18 |
| npk-20210730_pre.xml | 11736 | 2021-08-02 16:03:18 |
| npk20210801_8k.htm | 26243 | 2021-08-02 16:03:18 |
| npk20210801_8k_htm.xml | 2569 | 2021-08-02 16:03:18 |
| R1.htm | 38874 | 2021-08-02 16:03:18 |
| report.css | 2767 | 2021-08-02 16:03:18 |
| Show.js | 1085 | 2021-08-02 16:03:18 |