Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000110019-20-000003-index-headers.html | 2020-02-24 16:49:49 | |
| 0000110019-20-000003-index.html | 2020-02-24 16:49:49 | |
| 0000110019-20-000003.txt | 2020-02-24 16:49:49 | |
 0000110019-20-000003-xbrl.zip | 193367 | 2020-02-24 16:49:49 |
| FilingSummary.xml | 22690 | 2020-02-24 16:49:49 |
| Financial_Report.xlsx | 62917 | 2020-02-24 16:49:49 |
| MetaLinks.json | 413370 | 2020-02-24 16:49:49 |
| nwp-20191231.xsd | 30070 | 2020-02-24 16:49:49 |
| nwp-20191231_cal.xml | 59597 | 2020-02-24 16:49:49 |
| nwp-20191231_def.xml | 133925 | 2020-02-24 16:49:49 |
| nwp-20191231_lab.xml | 483893 | 2020-02-24 16:49:49 |
| nwp-20191231_pre.xml | 266956 | 2020-02-24 16:49:49 |
| nwp2019123110k.htm | 1064368 | 2020-02-24 16:49:49 |
| nwp2019123110k_htm.xml | 640233 | 2020-02-24 16:49:49 |
| nwp20191231ex-311.htm | 12741 | 2020-02-24 16:49:49 |
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| nwp20191231ex-32.htm | 7708 | 2020-02-24 16:49:49 |
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| R9.htm | 6711 | 2020-02-24 16:49:49 |
| report.css | 2767 | 2020-02-24 16:49:49 |
| Show.js | 1085 | 2020-02-24 16:49:49 |