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| 0001193125-19-272052-index.html | 2019-10-23 06:54:07 | |
| 0001193125-19-272052.txt | 2019-10-23 06:54:07 | |
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| d820989d8k_htm.xml | 6572 | 2019-10-23 06:54:07 |
| FilingSummary.xml | 1769 | 2019-10-23 06:54:07 |
| Financial_Report.xlsx | 6070 | 2019-10-23 06:54:07 |
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 g820989g1023090004808.jpg | 3201 | 2019-10-23 06:54:07 |
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| nwn-20191021.xsd | 5358 | 2019-10-23 06:54:07 |
| nwn-20191021_cal.xml | 664 | 2019-10-23 06:54:07 |
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| R1.htm | 45710 | 2019-10-23 06:54:07 |
| report.css | 2767 | 2019-10-23 06:54:07 |
| Show.js | 1085 | 2019-10-23 06:54:07 |