Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000110019-17-000008-index-headers.html | 2017-08-03 07:56:00 | |
| 0000110019-17-000008-index.html | 2017-08-03 07:56:00 | |
| 0000110019-17-000008.txt | 2017-08-03 07:56:00 | |
 0000110019-17-000008-xbrl.zip | 66374 | 2017-08-03 07:56:00 |
| FilingSummary.xml | 10677 | 2017-08-03 07:56:00 |
| Financial_Report.xlsx | 27176 | 2017-08-03 07:56:00 |
| nwp-20170630.xml | 101380 | 2017-08-03 07:56:00 |
| nwp-20170630.xsd | 18401 | 2017-08-03 07:56:00 |
| nwp-20170630_cal.xml | 50204 | 2017-08-03 07:56:00 |
| nwp-20170630_def.xml | 68896 | 2017-08-03 07:56:00 |
| nwp-20170630_lab.xml | 270958 | 2017-08-03 07:56:00 |
| nwp-20170630_pre.xml | 143086 | 2017-08-03 07:56:00 |
| nwp_20170630x10q.htm | 353783 | 2017-08-03 07:56:00 |
| nwp_20170630xex-311.htm | 12720 | 2017-08-03 07:56:00 |
| nwp_20170630xex-312.htm | 13079 | 2017-08-03 07:56:00 |
| nwp_20170630xex-32.htm | 7806 | 2017-08-03 07:56:00 |
| R1.htm | 20505 | 2017-08-03 07:56:00 |
| R10.htm | 12756 | 2017-08-03 07:56:00 |
| R11.htm | 9021 | 2017-08-03 07:56:00 |
| R12.htm | 16627 | 2017-08-03 07:56:00 |
| R13.htm | 7211 | 2017-08-03 07:56:00 |
| R14.htm | 21431 | 2017-08-03 07:56:00 |
| R15.htm | 23959 | 2017-08-03 07:56:00 |
| R16.htm | 9575 | 2017-08-03 07:56:00 |
| R17.htm | 23351 | 2017-08-03 07:56:00 |
| R2.htm | 40556 | 2017-08-03 07:56:00 |
| R3.htm | 95291 | 2017-08-03 07:56:00 |
| R4.htm | 81119 | 2017-08-03 07:56:00 |
| R5.htm | 13771 | 2017-08-03 07:56:00 |
| R6.htm | 6946 | 2017-08-03 07:56:00 |
| R7.htm | 14208 | 2017-08-03 07:56:00 |
| R8.htm | 9439 | 2017-08-03 07:56:00 |
| R9.htm | 9643 | 2017-08-03 07:56:00 |
| report.css | 2767 | 2017-08-03 07:56:00 |
| Show.js | 1410 | 2017-08-03 07:56:00 |