Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000110019-17-000012-index-headers.html | 2017-11-02 08:54:58 | |
| 0000110019-17-000012-index.html | 2017-11-02 08:54:58 | |
| 0000110019-17-000012.txt | 2017-11-02 08:54:58 | |
 0000110019-17-000012-xbrl.zip | 67380 | 2017-11-02 08:54:58 |
| FilingSummary.xml | 10832 | 2017-11-02 08:54:58 |
| Financial_Report.xlsx | 26920 | 2017-11-02 08:54:58 |
| nwp-20170930.xml | 103520 | 2017-11-02 08:54:58 |
| nwp-20170930.xsd | 18401 | 2017-11-02 08:54:58 |
| nwp-20170930_cal.xml | 51727 | 2017-11-02 08:54:58 |
| nwp-20170930_def.xml | 74262 | 2017-11-02 08:54:58 |
| nwp-20170930_lab.xml | 278637 | 2017-11-02 08:54:58 |
| nwp-20170930_pre.xml | 146679 | 2017-11-02 08:54:58 |
| nwp_20170930x10q.htm | 379837 | 2017-11-02 08:54:58 |
| nwp_20170930xex-311.htm | 12722 | 2017-11-02 08:54:58 |
| nwp_20170930xex-312.htm | 13081 | 2017-11-02 08:54:58 |
| nwp_20170930xex-32.htm | 7815 | 2017-11-02 08:54:58 |
| R1.htm | 20505 | 2017-11-02 08:54:58 |
| R10.htm | 11700 | 2017-11-02 08:54:58 |
| R11.htm | 9032 | 2017-11-02 08:54:58 |
| R12.htm | 16627 | 2017-11-02 08:54:58 |
| R13.htm | 15465 | 2017-11-02 08:54:58 |
| R14.htm | 21431 | 2017-11-02 08:54:58 |
| R15.htm | 23959 | 2017-11-02 08:54:58 |
| R16.htm | 9575 | 2017-11-02 08:54:58 |
| R17.htm | 22622 | 2017-11-02 08:54:58 |
| R2.htm | 39485 | 2017-11-02 08:54:58 |
| R3.htm | 94246 | 2017-11-02 08:54:58 |
| R4.htm | 79382 | 2017-11-02 08:54:58 |
| R5.htm | 12582 | 2017-11-02 08:54:58 |
| R6.htm | 6465 | 2017-11-02 08:54:58 |
| R7.htm | 12795 | 2017-11-02 08:54:58 |
| R8.htm | 9313 | 2017-11-02 08:54:58 |
| R9.htm | 8204 | 2017-11-02 08:54:58 |
| report.css | 2767 | 2017-11-02 08:54:58 |
| Show.js | 1410 | 2017-11-02 08:54:58 |