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| 0000073020-10-000021-index.html | 2010-08-04 16:11:20 | |
| 0000073020-10-000021.txt | 2010-08-04 16:11:20 | |
 0000073020-10-000021-xbrl.zip | 54361 | 2010-08-04 16:11:20 |
| defnref.xml | 24154 | 2010-08-04 16:11:20 |
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| ex31-1.htm | 8589 | 2010-08-04 16:11:20 |
| ex31-2.htm | 8702 | 2010-08-04 16:11:20 |
| ex32.htm | 7359 | 2010-08-04 16:11:20 |
| FilingSummary.xml | 9145 | 2010-08-04 16:11:20 |
| Financial_Report.xls | 527652 | 2010-08-04 16:11:20 |
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| form10q.htm | 1450220 | 2010-08-04 16:11:20 |
| nwn-20100630.xml | 588393 | 2010-08-04 16:11:20 |
| nwn-20100630.xsd | 13983 | 2010-08-04 16:11:20 |
| nwn-20100630_cal.xml | 54236 | 2010-08-04 16:11:20 |
| nwn-20100630_lab.xml | 123949 | 2010-08-04 16:11:20 |
| nwn-20100630_pre.xml | 95282 | 2010-08-04 16:11:20 |
| R1.xml | 45952 | 2010-08-04 16:11:20 |
| R10.xml | 18662 | 2010-08-04 16:11:20 |
| R11.xml | 73109 | 2010-08-04 16:11:20 |
| R12.xml | 23292 | 2010-08-04 16:11:20 |
| R13.xml | 39914 | 2010-08-04 16:11:20 |
| R14.xml | 23833 | 2010-08-04 16:11:20 |
| R15.xml | 142670 | 2010-08-04 16:11:20 |
| R16.xml | 89372 | 2010-08-04 16:11:20 |
| R2.xml | 103454 | 2010-08-04 16:11:20 |
| R3.xml | 187738 | 2010-08-04 16:11:20 |
| R4.xml | 14982 | 2010-08-04 16:11:20 |
| R5.xml | 117983 | 2010-08-04 16:11:20 |
| R6.xml | 106837 | 2010-08-04 16:11:20 |
| R7.xml | 66666 | 2010-08-04 16:11:20 |
| R8.xml | 12164 | 2010-08-04 16:11:20 |
| R9.xml | 23481 | 2010-08-04 16:11:20 |