Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000110019-20-000006-index-headers.html | 2020-05-04 16:52:54 | |
| 0000110019-20-000006-index.html | 2020-05-04 16:52:54 | |
| 0000110019-20-000006.txt | 2020-05-04 16:52:54 | |
 0000110019-20-000006-xbrl.zip | 93072 | 2020-05-04 16:52:54 |
| FilingSummary.xml | 10937 | 2020-05-04 16:52:54 |
| Financial_Report.xlsx | 26226 | 2020-05-04 16:52:54 |
| MetaLinks.json | 235071 | 2020-05-04 16:52:54 |
| nwp-20200331.xsd | 14661 | 2020-05-04 16:52:54 |
| nwp-20200331_cal.xml | 46325 | 2020-05-04 16:52:54 |
| nwp-20200331_def.xml | 65719 | 2020-05-04 16:52:54 |
| nwp-20200331_lab.xml | 263990 | 2020-05-04 16:52:54 |
| nwp-20200331_pre.xml | 143655 | 2020-05-04 16:52:54 |
| nwp2020033110q.htm | 498164 | 2020-05-04 16:52:54 |
| nwp2020033110q_htm.xml | 168123 | 2020-05-04 16:52:54 |
| nwp20200331ex-311.htm | 12716 | 2020-05-04 16:52:54 |
| nwp20200331ex-312.htm | 13067 | 2020-05-04 16:52:54 |
| nwp20200331ex-32.htm | 7779 | 2020-05-04 16:52:54 |
| R1.htm | 47422 | 2020-05-04 16:52:54 |
| R10.htm | 8362 | 2020-05-04 16:52:54 |
| R11.htm | 10839 | 2020-05-04 16:52:54 |
| R12.htm | 23813 | 2020-05-04 16:52:54 |
| R13.htm | 36578 | 2020-05-04 16:52:54 |
| R14.htm | 12473 | 2020-05-04 16:52:54 |
| R15.htm | 23885 | 2020-05-04 16:52:54 |
| R16.htm | 9574 | 2020-05-04 16:52:54 |
| R17.htm | 17071 | 2020-05-04 16:52:54 |
| R2.htm | 46602 | 2020-05-04 16:52:54 |
| R3.htm | 94514 | 2020-05-04 16:52:54 |
| R4.htm | 11122 | 2020-05-04 16:52:54 |
| R5.htm | 71299 | 2020-05-04 16:52:54 |
| R6.htm | 10556 | 2020-05-04 16:52:54 |
| R7.htm | 24312 | 2020-05-04 16:52:54 |
| R8.htm | 12481 | 2020-05-04 16:52:54 |
| R9.htm | 7467 | 2020-05-04 16:52:54 |
| report.css | 2767 | 2020-05-04 16:52:54 |
| Show.js | 1085 | 2020-05-04 16:52:54 |