Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000073020-11-000003-index-headers.html | 2011-02-25 16:35:32 | |
| 0000073020-11-000003-index.html | 2011-02-25 16:35:32 | |
| 0000073020-11-000003.txt | 2011-02-25 16:35:32 | |
 0000073020-11-000003-xbrl.zip | 101964 | 2011-02-25 16:35:32 |
| defnref.xml | 27831 | 2011-02-25 16:35:32 |
| ex10z-1.htm | 34466 | 2011-02-25 16:35:32 |
| ex12.htm | 47630 | 2011-02-25 16:35:32 |
| ex21.htm | 14008 | 2011-02-25 16:35:32 |
| ex23.htm | 3206 | 2011-02-25 16:35:32 |
| ex31-1.htm | 9199 | 2011-02-25 16:35:32 |
| ex31-2.htm | 8967 | 2011-02-25 16:35:32 |
| ex32-1.htm | 7499 | 2011-02-25 16:35:32 |
| FilingSummary.xml | 17190 | 2011-02-25 16:35:32 |
| Financial_Report.xls | 1042417 | 2011-02-25 16:35:32 |
| form10k.htm | 3068830 | 2011-02-25 16:35:32 |
| nwn-20101231.xml | 1178030 | 2011-02-25 16:35:32 |
| nwn-20101231.xsd | 20259 | 2011-02-25 16:35:32 |
| nwn-20101231_cal.xml | 60819 | 2011-02-25 16:35:32 |
| nwn-20101231_def.xml | 15758 | 2011-02-25 16:35:32 |
| nwn-20101231_lab.xml | 158742 | 2011-02-25 16:35:32 |
| nwn-20101231_pre.xml | 129822 | 2011-02-25 16:35:32 |
 nwn_logo.jpg | 2711 | 2011-02-25 16:35:32 |
| R1.xml | 40816 | 2011-02-25 16:35:32 |
| R10.xml | 25191 | 2011-02-25 16:35:32 |
| R11.xml | 65963 | 2011-02-25 16:35:32 |
| R12.xml | 21317 | 2011-02-25 16:35:32 |
| R13.xml | 120530 | 2011-02-25 16:35:32 |
| R14.xml | 72400 | 2011-02-25 16:35:32 |
| R15.xml | 17308 | 2011-02-25 16:35:32 |
| R16.xml | 329395 | 2011-02-25 16:35:32 |
| R17.xml | 124377 | 2011-02-25 16:35:32 |
| R18.xml | 28657 | 2011-02-25 16:35:32 |
| R19.xml | 28041 | 2011-02-25 16:35:32 |
| R2.xml | 77959 | 2011-02-25 16:35:32 |
| R20.xml | 110116 | 2011-02-25 16:35:32 |
| R21.xml | 27443 | 2011-02-25 16:35:32 |
| R22.xml | 103358 | 2011-02-25 16:35:32 |
| R23.xml | 7855 | 2011-02-25 16:35:32 |
| R3.xml | 143380 | 2011-02-25 16:35:32 |
| R4.xml | 11430 | 2011-02-25 16:35:32 |
| R5.xml | 126073 | 2011-02-25 16:35:32 |
| R6.xml | 134023 | 2011-02-25 16:35:32 |
| R7.xml | 16116 | 2011-02-25 16:35:32 |
| R8.xml | 15954 | 2011-02-25 16:35:32 |
| R9.xml | 105497 | 2011-02-25 16:35:32 |