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 0001437749-20-022995-index-headers.html | 2020-11-06 16:03:28 | |
| 0001437749-20-022995-index.html | 2020-11-06 16:03:28 | |
| 0001437749-20-022995.txt | 2020-11-06 16:03:28 | |
 0001437749-20-022995-xbrl.zip | 111017 | 2020-11-06 16:03:28 |
| ex_201088.htm | 10574 | 2020-11-06 16:03:28 |
| ex_201089.htm | 10759 | 2020-11-06 16:03:28 |
| ex_201090.htm | 5219 | 2020-11-06 16:03:28 |
| ex_201091.htm | 5201 | 2020-11-06 16:03:28 |
| FilingSummary.xml | 25330 | 2020-11-06 16:03:28 |
| Financial_Report.xlsx | 48179 | 2020-11-06 16:03:28 |
| MetaLinks.json | 429891 | 2020-11-06 16:03:28 |
| npk-20200927.xsd | 34553 | 2020-11-06 16:03:28 |
| npk-20200927_cal.xml | 49150 | 2020-11-06 16:03:28 |
| npk-20200927_def.xml | 262453 | 2020-11-06 16:03:28 |
| npk-20200927_lab.xml | 233646 | 2020-11-06 16:03:28 |
| npk-20200927_pre.xml | 283251 | 2020-11-06 16:03:28 |
| npk20200930_10q.htm | 815012 | 2020-11-06 16:03:28 |
| npk20200930_10q_htm.xml | 567346 | 2020-11-06 16:03:28 |
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| R8.htm | 5852 | 2020-11-06 16:03:28 |
| R9.htm | 7402 | 2020-11-06 16:03:28 |
| report.css | 2767 | 2020-11-06 16:03:28 |
| Show.js | 1085 | 2020-11-06 16:03:28 |