Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001437749-21-003256-index-headers.html | 2021-02-18 16:06:23 | |
| 0001437749-21-003256-index.html | 2021-02-18 16:06:23 | |
| 0001437749-21-003256.txt | 2021-02-18 16:06:23 | |
 0001437749-21-003256-xbrl.zip | 11598 | 2021-02-18 16:06:23 |
| ex_227537.htm | 5233 | 2021-02-18 16:06:23 |
| FilingSummary.xml | 1757 | 2021-02-18 16:06:23 |
| Financial_Report.xlsx | 5446 | 2021-02-18 16:06:23 |
| MetaLinks.json | 19323 | 2021-02-18 16:06:23 |
| npk-20210217.xsd | 3692 | 2021-02-18 16:06:23 |
| npk-20210217_def.xml | 11583 | 2021-02-18 16:06:23 |
| npk-20210217_lab.xml | 15466 | 2021-02-18 16:06:23 |
| npk-20210217_pre.xml | 11737 | 2021-02-18 16:06:23 |
| npk20210218_8k.htm | 29302 | 2021-02-18 16:06:23 |
| npk20210218_8k_htm.xml | 2564 | 2021-02-18 16:06:23 |
| R1.htm | 38869 | 2021-02-18 16:06:23 |
| report.css | 2767 | 2021-02-18 16:06:23 |
| Show.js | 1085 | 2021-02-18 16:06:23 |