Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000110019-18-000012-index-headers.html | 2018-11-01 08:51:29 | |
| 0000110019-18-000012-index.html | 2018-11-01 08:51:29 | |
| 0000110019-18-000012.txt | 2018-11-01 08:51:29 | |
 0000110019-18-000012-xbrl.zip | 84323 | 2018-11-01 08:51:29 |
| FilingSummary.xml | 12512 | 2018-11-01 08:51:29 |
| Financial_Report.xlsx | 34570 | 2018-11-01 08:51:29 |
| nwp-20180930.xml | 182845 | 2018-11-01 08:51:29 |
| nwp-20180930.xsd | 21053 | 2018-11-01 08:51:29 |
| nwp-20180930_cal.xml | 55165 | 2018-11-01 08:51:29 |
| nwp-20180930_def.xml | 101853 | 2018-11-01 08:51:29 |
| nwp-20180930_lab.xml | 310463 | 2018-11-01 08:51:29 |
| nwp-20180930_pre.xml | 166796 | 2018-11-01 08:51:29 |
| nwp_20180930x10q.htm | 434774 | 2018-11-01 08:51:29 |
| nwp_20180930xex-311.htm | 12721 | 2018-11-01 08:51:29 |
| nwp_20180930xex-312.htm | 13068 | 2018-11-01 08:51:29 |
| nwp_20180930xex-32.htm | 7800 | 2018-11-01 08:51:29 |
| R1.htm | 24191 | 2018-11-01 08:51:29 |
| R10.htm | 10831 | 2018-11-01 08:51:29 |
| R11.htm | 26803 | 2018-11-01 08:51:29 |
| R12.htm | 13785 | 2018-11-01 08:51:29 |
| R13.htm | 8732 | 2018-11-01 08:51:29 |
| R14.htm | 25380 | 2018-11-01 08:51:29 |
| R15.htm | 15424 | 2018-11-01 08:51:29 |
| R16.htm | 26609 | 2018-11-01 08:51:29 |
| R17.htm | 21307 | 2018-11-01 08:51:29 |
| R18.htm | 9576 | 2018-11-01 08:51:29 |
| R19.htm | 24803 | 2018-11-01 08:51:29 |
| R2.htm | 52633 | 2018-11-01 08:51:29 |
| R20.htm | 24915 | 2018-11-01 08:51:29 |
| R3.htm | 94064 | 2018-11-01 08:51:29 |
| R4.htm | 78337 | 2018-11-01 08:51:29 |
| R5.htm | 15473 | 2018-11-01 08:51:29 |
| R6.htm | 12936 | 2018-11-01 08:51:29 |
| R7.htm | 11685 | 2018-11-01 08:51:29 |
| R8.htm | 10526 | 2018-11-01 08:51:29 |
| R9.htm | 8202 | 2018-11-01 08:51:29 |
| report.css | 2767 | 2018-11-01 08:51:29 |
| Show.js | 1085 | 2018-11-01 08:51:29 |