Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001733998-22-000042-index-headers.html | 2022-10-27 16:49:01 | |
| 0001733998-22-000042-index.html | 2022-10-27 16:49:01 | |
| 0001733998-22-000042.txt | 2022-10-27 16:49:01 | |
 0001733998-22-000042-xbrl.zip | 96782 | 2022-10-27 16:49:01 |
| FilingSummary.xml | 1837 | 2022-10-27 16:49:01 |
| Financial_Report.xlsx | 6033 | 2022-10-27 16:49:01 |
| MetaLinks.json | 22126 | 2022-10-27 16:49:01 |
| nwn-20221024.htm | 67687 | 2022-10-27 16:49:01 |
| nwn-20221024.xsd | 2939 | 2022-10-27 16:49:01 |
| nwn-20221024_def.xml | 16431 | 2022-10-27 16:49:01 |
 nwn-20221024_g1.jpg | 57055 | 2022-10-27 16:49:01 |
 nwn-20221024_g2.jpg | 38736 | 2022-10-27 16:49:01 |
| nwn-20221024_htm.xml | 20629 | 2022-10-27 16:49:01 |
| nwn-20221024_lab.xml | 31891 | 2022-10-27 16:49:01 |
| nwn-20221024_pre.xml | 16703 | 2022-10-27 16:49:01 |
| R1.htm | 45116 | 2022-10-27 16:49:01 |
| report.css | 2767 | 2022-10-27 16:49:01 |
| Show.js | 1085 | 2022-10-27 16:49:01 |