Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000051434-22-000021-index-headers.html | 2022-04-28 07:17:47 | |
| 0000051434-22-000021-index.html | 2022-04-28 07:17:47 | |
| 0000051434-22-000021.txt | 2022-04-28 07:17:47 | |
 0000051434-22-000021-xbrl.zip | 36817 | 2022-04-28 07:17:47 |
| FilingSummary.xml | 1786 | 2022-04-28 07:17:47 |
| Financial_Report.xlsx | 5723 | 2022-04-28 07:17:47 |
 image1a.jpg | 15867 | 2022-04-28 07:17:47 |
| ip-20220428.htm | 38409 | 2022-04-28 07:17:47 |
| ip-20220428.xsd | 2394 | 2022-04-28 07:17:47 |
| ip-20220428_def.xml | 14911 | 2022-04-28 07:17:47 |
| ip-20220428_htm.xml | 11501 | 2022-04-28 07:17:47 |
| ip-20220428_lab.xml | 28839 | 2022-04-28 07:17:47 |
| ip-20220428_pre.xml | 15483 | 2022-04-28 07:17:47 |
| MetaLinks.json | 20617 | 2022-04-28 07:17:47 |
| nextgenip-20220331ex991.htm | 408496 | 2022-04-28 07:17:47 |
| R1.htm | 40481 | 2022-04-28 07:17:47 |
| report.css | 2767 | 2022-04-28 07:17:47 |
| Show.js | 1085 | 2022-04-28 07:17:47 |