Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000110019-16-000019-index-headers.html | 2016-05-05 09:32:30 | |
| 0000110019-16-000019-index.html | 2016-05-05 09:32:30 | |
| 0000110019-16-000019.txt | 2016-05-05 09:32:30 | |
 0000110019-16-000019-xbrl.zip | 57824 | 2016-05-05 09:32:30 |
| FilingSummary.xml | 9536 | 2016-05-05 09:32:30 |
| Financial_Report.xlsx | 23975 | 2016-05-05 09:32:30 |
| nwp-20160331.xml | 80866 | 2016-05-05 09:32:30 |
| nwp-20160331.xsd | 15087 | 2016-05-05 09:32:30 |
| nwp-20160331_cal.xml | 50957 | 2016-05-05 09:32:30 |
| nwp-20160331_def.xml | 52407 | 2016-05-05 09:32:30 |
| nwp-20160331_lab.xml | 237319 | 2016-05-05 09:32:30 |
| nwp-20160331_pre.xml | 126143 | 2016-05-05 09:32:30 |
| nwp_20160331x10q.htm | 336869 | 2016-05-05 09:32:30 |
| nwp_20160331xex-311.htm | 12717 | 2016-05-05 09:32:30 |
| nwp_20160331xex-312.htm | 13063 | 2016-05-05 09:32:30 |
| nwp_20160331xex-32.htm | 7788 | 2016-05-05 09:32:30 |
| R1.htm | 20505 | 2016-05-05 09:32:30 |
| R10.htm | 8466 | 2016-05-05 09:32:30 |
| R11.htm | 7399 | 2016-05-05 09:32:30 |
| R12.htm | 21546 | 2016-05-05 09:32:30 |
| R13.htm | 12572 | 2016-05-05 09:32:30 |
| R14.htm | 9575 | 2016-05-05 09:32:30 |
| R15.htm | 22210 | 2016-05-05 09:32:30 |
| R2.htm | 39181 | 2016-05-05 09:32:30 |
| R3.htm | 99757 | 2016-05-05 09:32:30 |
| R4.htm | 77632 | 2016-05-05 09:32:30 |
| R5.htm | 12440 | 2016-05-05 09:32:30 |
| R6.htm | 14213 | 2016-05-05 09:32:30 |
| R7.htm | 7752 | 2016-05-05 09:32:30 |
| R8.htm | 9644 | 2016-05-05 09:32:30 |
| R9.htm | 13034 | 2016-05-05 09:32:30 |
| report.css | 2767 | 2016-05-05 09:32:30 |
| Show.js | 1410 | 2016-05-05 09:32:30 |