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 0001733998-19-000052-index-headers.html | 2019-12-30 17:57:58 | |
| 0001733998-19-000052-index.html | 2019-12-30 17:57:58 | |
| 0001733998-19-000052.txt | 2019-12-30 17:57:58 | |
 0001733998-19-000052-xbrl.zip | 100783 | 2019-12-30 17:57:58 |
| a2019decform8-kxoregon.htm | 75797 | 2019-12-30 17:57:58 |
| a2019decform8-kxoregon_htm.xml | 9467 | 2019-12-30 17:57:58 |
| ex991pressrelease-dec2.htm | 14820 | 2019-12-30 17:57:58 |
| FilingSummary.xml | 1942 | 2019-12-30 17:57:58 |
| Financial_Report.xlsx | 6126 | 2019-12-30 17:57:58 |
| MetaLinks.json | 23982 | 2019-12-30 17:57:58 |
| nwn-20191230.xsd | 5070 | 2019-12-30 17:57:58 |
| nwn-20191230_cal.xml | 702 | 2019-12-30 17:57:58 |
| nwn-20191230_def.xml | 16135 | 2019-12-30 17:57:58 |
| nwn-20191230_lab.xml | 34579 | 2019-12-30 17:57:58 |
| nwn-20191230_pre.xml | 17719 | 2019-12-30 17:57:58 |
 nwn4chza23.jpg | 38736 | 2019-12-30 17:57:58 |
 nwnholdingshza25.jpg | 57055 | 2019-12-30 17:57:58 |
| R1.htm | 45766 | 2019-12-30 17:57:58 |
| report.css | 2767 | 2019-12-30 17:57:58 |
| Show.js | 1085 | 2019-12-30 17:57:58 |