Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001733998-23-000036-index-headers.html | 2023-07-28 16:39:58 | |
| 0001733998-23-000036-index.html | 2023-07-28 16:39:58 | |
| 0001733998-23-000036.txt | 2023-07-28 16:39:58 | |
 0001733998-23-000036-xbrl.zip | 93484 | 2023-07-28 16:39:58 |
| FilingSummary.xml | 1835 | 2023-07-28 16:39:58 |
| Financial_Report.xlsx | 6034 | 2023-07-28 16:39:58 |
| MetaLinks.json | 22506 | 2023-07-28 16:39:58 |
| nwn-20230724.htm | 46881 | 2023-07-28 16:39:58 |
| nwn-20230724.xsd | 2941 | 2023-07-28 16:39:58 |
| nwn-20230724_def.xml | 16433 | 2023-07-28 16:39:58 |
 nwn-20230724_g1.jpg | 57055 | 2023-07-28 16:39:58 |
 nwn-20230724_g2.jpg | 38736 | 2023-07-28 16:39:58 |
| nwn-20230724_htm.xml | 5087 | 2023-07-28 16:39:58 |
| nwn-20230724_lab.xml | 31893 | 2023-07-28 16:39:58 |
| nwn-20230724_pre.xml | 16705 | 2023-07-28 16:39:58 |
| R1.htm | 45114 | 2023-07-28 16:39:58 |
| report.css | 2767 | 2023-07-28 16:39:58 |
| Show.js | 1085 | 2023-07-28 16:39:58 |