Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001733998-23-000044-index-headers.html | 2023-08-07 16:46:10 | |
| 0001733998-23-000044-index.html | 2023-08-07 16:46:10 | |
| 0001733998-23-000044.txt | 2023-08-07 16:46:10 | |
 0001733998-23-000044-xbrl.zip | 116769 | 2023-08-07 16:46:10 |
| conformed-26thsupplemental.htm | 218696 | 2023-08-07 16:46:10 |
| FilingSummary.xml | 1883 | 2023-08-07 16:46:10 |
| Financial_Report.xlsx | 6036 | 2023-08-07 16:46:10 |
| MetaLinks.json | 22566 | 2023-08-07 16:46:10 |
| nwn-20230804.htm | 46675 | 2023-08-07 16:46:10 |
| nwn-20230804.xsd | 2943 | 2023-08-07 16:46:10 |
| nwn-20230804_def.xml | 16433 | 2023-08-07 16:46:10 |
 nwn-20230804_g1.jpg | 57055 | 2023-08-07 16:46:10 |
 nwn-20230804_g2.jpg | 38736 | 2023-08-07 16:46:10 |
| nwn-20230804_htm.xml | 5087 | 2023-08-07 16:46:10 |
| nwn-20230804_lab.xml | 31893 | 2023-08-07 16:46:10 |
| nwn-20230804_pre.xml | 16705 | 2023-08-07 16:46:10 |
| R1.htm | 45116 | 2023-08-07 16:46:10 |
| report.css | 2767 | 2023-08-07 16:46:10 |
| Show.js | 1085 | 2023-08-07 16:46:10 |