Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000051434-20-000015-index-headers.html | 2020-04-30 07:08:20 | |
| 0000051434-20-000015-index.html | 2020-04-30 07:08:20 | |
| 0000051434-20-000015.txt | 2020-04-30 07:08:20 | |
 0000051434-20-000015-xbrl.zip | 42389 | 2020-04-30 07:08:20 |
| FilingSummary.xml | 1885 | 2020-04-30 07:08:20 |
| Financial_Report.xlsx | 5841 | 2020-04-30 07:08:20 |
 image11.jpg | 15867 | 2020-04-30 07:08:20 |
| ip-20200430.htm | 49864 | 2020-04-30 07:08:20 |
| ip-20200430.xsd | 2812 | 2020-04-30 07:08:20 |
| ip-20200430_cal.xml | 821 | 2020-04-30 07:08:20 |
| ip-20200430_def.xml | 15079 | 2020-04-30 07:08:20 |
| ip-20200430_htm.xml | 11437 | 2020-04-30 07:08:20 |
| ip-20200430_lab.xml | 29007 | 2020-04-30 07:08:20 |
| ip-20200430_pre.xml | 15651 | 2020-04-30 07:08:20 |
| MetaLinks.json | 21967 | 2020-04-30 07:08:20 |
| nextgenip-20200331exhi.htm | 648458 | 2020-04-30 07:08:20 |
| R1.htm | 40384 | 2020-04-30 07:08:20 |
| report.css | 2766 | 2020-04-30 07:08:20 |
| Show.js | 1085 | 2020-04-30 07:08:20 |