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|---|---|---|
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| 0000110019-16-000016-index.html | 2016-02-24 09:28:42 | |
| 0000110019-16-000016.txt | 2016-02-24 09:28:42 | |
 0000110019-16-000016-xbrl.zip | 121869 | 2016-02-24 09:28:42 |
| FilingSummary.xml | 19544 | 2016-02-24 09:28:42 |
| Financial_Report.xlsx | 51244 | 2016-02-24 09:28:42 |
| nwp-20151231.xml | 474981 | 2016-02-24 09:28:42 |
| nwp-20151231.xsd | 27901 | 2016-02-24 09:28:42 |
| nwp-20151231_cal.xml | 63938 | 2016-02-24 09:28:42 |
| nwp-20151231_def.xml | 112798 | 2016-02-24 09:28:42 |
| nwp-20151231_lab.xml | 446753 | 2016-02-24 09:28:42 |
| nwp-20151231_pre.xml | 239957 | 2016-02-24 09:28:42 |
| nwp_20151231x10k.htm | 799108 | 2016-02-24 09:28:42 |
| nwp_20151231xex-311.htm | 12699 | 2016-02-24 09:28:42 |
| nwp_20151231xex-312.htm | 12838 | 2016-02-24 09:28:42 |
| nwp_20151231xex-32.htm | 7673 | 2016-02-24 09:28:42 |
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| R9.htm | 45291 | 2016-02-24 09:28:42 |
| report.css | 2767 | 2016-02-24 09:28:42 |
| Show.js | 1410 | 2016-02-24 09:28:42 |