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| 0000051434-20-000006-index.html | 2020-01-30 07:31:29 | |
| 0000051434-20-000006.txt | 2020-01-30 07:31:29 | |
 0000051434-20-000006-xbrl.zip | 47929 | 2020-01-30 07:31:29 |
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| Financial_Report.xlsx | 5840 | 2020-01-30 07:31:29 |
 image11.jpg | 15867 | 2020-01-30 07:31:29 |
| ip-20200130.htm | 50222 | 2020-01-30 07:31:29 |
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| ip-20200130_cal.xml | 821 | 2020-01-30 07:31:29 |
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| ip-20200130_lab.xml | 29002 | 2020-01-30 07:31:29 |
| ip-20200130_pre.xml | 15651 | 2020-01-30 07:31:29 |
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| nextgenip-20191231exhi.htm | 918160 | 2020-01-30 07:31:29 |
| R1.htm | 40389 | 2020-01-30 07:31:29 |
| report.css | 2767 | 2020-01-30 07:31:29 |
| Show.js | 1085 | 2020-01-30 07:31:29 |