Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000110019-17-000006-index-headers.html | 2017-05-04 08:53:32 | |
| 0000110019-17-000006-index.html | 2017-05-04 08:53:32 | |
| 0000110019-17-000006.txt | 2017-05-04 08:53:32 | |
 0000110019-17-000006-xbrl.zip | 64425 | 2017-05-04 08:53:32 |
| FilingSummary.xml | 10677 | 2017-05-04 08:53:32 |
| Financial_Report.xlsx | 26615 | 2017-05-04 08:53:32 |
| nwp-20170331.xml | 93921 | 2017-05-04 08:53:32 |
| nwp-20170331.xsd | 18931 | 2017-05-04 08:53:32 |
| nwp-20170331_cal.xml | 48967 | 2017-05-04 08:53:32 |
| nwp-20170331_def.xml | 70488 | 2017-05-04 08:53:32 |
| nwp-20170331_lab.xml | 265231 | 2017-05-04 08:53:32 |
| nwp-20170331_pre.xml | 142152 | 2017-05-04 08:53:32 |
| nwp_20170331x10q.htm | 340623 | 2017-05-04 08:53:32 |
| nwp_20170331xex-311.htm | 12717 | 2017-05-04 08:53:32 |
| nwp_20170331xex-312.htm | 13063 | 2017-05-04 08:53:32 |
| nwp_20170331xex-32.htm | 7788 | 2017-05-04 08:53:32 |
| R1.htm | 20504 | 2017-05-04 08:53:32 |
| R10.htm | 7004 | 2017-05-04 08:53:32 |
| R11.htm | 9021 | 2017-05-04 08:53:32 |
| R12.htm | 7211 | 2017-05-04 08:53:32 |
| R13.htm | 21781 | 2017-05-04 08:53:32 |
| R14.htm | 19007 | 2017-05-04 08:53:32 |
| R15.htm | 9575 | 2017-05-04 08:53:32 |
| R16.htm | 22023 | 2017-05-04 08:53:32 |
| R17.htm | 16627 | 2017-05-04 08:53:32 |
| R2.htm | 38881 | 2017-05-04 08:53:32 |
| R3.htm | 95286 | 2017-05-04 08:53:32 |
| R4.htm | 74826 | 2017-05-04 08:53:32 |
| R5.htm | 13591 | 2017-05-04 08:53:32 |
| R6.htm | 14210 | 2017-05-04 08:53:32 |
| R7.htm | 9038 | 2017-05-04 08:53:32 |
| R8.htm | 9644 | 2017-05-04 08:53:32 |
| R9.htm | 12673 | 2017-05-04 08:53:32 |
| report.css | 2767 | 2017-05-04 08:53:32 |
| Show.js | 1410 | 2017-05-04 08:53:32 |