Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001733998-23-000038-index-headers.html | 2023-08-02 19:32:52 | |
| 0001733998-23-000038-index.html | 2023-08-02 19:32:52 | |
| 0001733998-23-000038.txt | 2023-08-02 19:32:52 | |
 0001733998-23-000038-xbrl.zip | 112757 | 2023-08-02 19:32:52 |
| a2023q2ex991pressreleasedo.htm | 310195 | 2023-08-02 19:32:52 |
| FilingSummary.xml | 1883 | 2023-08-02 19:32:52 |
| Financial_Report.xlsx | 6039 | 2023-08-02 19:32:52 |
| MetaLinks.json | 22680 | 2023-08-02 19:32:52 |
| nwn-20230803.htm | 52506 | 2023-08-02 19:32:52 |
| nwn-20230803.xsd | 2943 | 2023-08-02 19:32:52 |
| nwn-20230803_def.xml | 16433 | 2023-08-02 19:32:52 |
 nwn-20230803_g1.jpg | 57055 | 2023-08-02 19:32:52 |
 nwn-20230803_g2.jpg | 38736 | 2023-08-02 19:32:52 |
| nwn-20230803_htm.xml | 5087 | 2023-08-02 19:32:52 |
| nwn-20230803_lab.xml | 31893 | 2023-08-02 19:32:52 |
| nwn-20230803_pre.xml | 16705 | 2023-08-02 19:32:52 |
 nwnholdingslogohza26.jpg | 64564 | 2023-08-02 19:32:52 |
| R1.htm | 45117 | 2023-08-02 19:32:52 |
| report.css | 2767 | 2023-08-02 19:32:52 |
| Show.js | 1085 | 2023-08-02 19:32:52 |