Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000051434-20-000017-index-headers.html | 2020-05-01 14:43:04 | |
| 0000051434-20-000017-index.html | 2020-05-01 14:43:04 | |
| 0000051434-20-000017.txt | 2020-05-01 14:43:04 | |
 0000051434-20-000017-xbrl.zip | 695386 | 2020-05-01 14:43:04 |
 continuingopswaterfallqoqq13.jpg | 180318 | 2020-05-01 14:43:04 |
 continuingopswaterfallyoyq13.jpg | 185232 | 2020-05-01 14:43:04 |
| FilingSummary.xml | 55564 | 2020-05-01 14:43:04 |
| Financial_Report.xlsx | 98856 | 2020-05-01 14:43:04 |
| ip-20200331.xsd | 64488 | 2020-05-01 14:43:04 |
| ip-20200331xexhibit101.htm | 8197 | 2020-05-01 14:43:04 |
| ip-20200331xexhibit311.htm | 12102 | 2020-05-01 14:43:04 |
| ip-20200331xexhibit32c.htm | 7115 | 2020-05-01 14:43:04 |
| ip-20200331_cal.xml | 119371 | 2020-05-01 14:43:04 |
| ip-20200331_def.xml | 472545 | 2020-05-01 14:43:04 |
| ip-20200331_lab.xml | 818317 | 2020-05-01 14:43:04 |
| ip-20200331_pre.xml | 552916 | 2020-05-01 14:43:04 |
| ip-20200333xexhibit312.htm | 11976 | 2020-05-01 14:43:04 |
| ip-3312020xform10xq.htm | 2194277 | 2020-05-01 14:43:04 |
| ip-3312020xform10xq_htm.xml | 2412312 | 2020-05-01 14:43:04 |
| MetaLinks.json | 759572 | 2020-05-01 14:43:04 |
| R1.htm | 52453 | 2020-05-01 14:43:04 |
| R10.htm | 116001 | 2020-05-01 14:43:04 |
| R11.htm | 100876 | 2020-05-01 14:43:04 |
| R12.htm | 19679 | 2020-05-01 14:43:04 |
| R13.htm | 5984 | 2020-05-01 14:43:04 |
| R14.htm | 21128 | 2020-05-01 14:43:04 |
| R15.htm | 22118 | 2020-05-01 14:43:04 |
| R16.htm | 39694 | 2020-05-01 14:43:04 |
| R17.htm | 35916 | 2020-05-01 14:43:04 |
| R18.htm | 51796 | 2020-05-01 14:43:04 |
| R19.htm | 78583 | 2020-05-01 14:43:04 |
| R2.htm | 59824 | 2020-05-01 14:43:04 |
| R20.htm | 8735 | 2020-05-01 14:43:04 |
| R21.htm | 30708 | 2020-05-01 14:43:04 |
| R22.htm | 29814 | 2020-05-01 14:43:04 |
| R23.htm | 11381 | 2020-05-01 14:43:04 |
| R24.htm | 110330 | 2020-05-01 14:43:04 |
| R25.htm | 19900 | 2020-05-01 14:43:04 |
| R26.htm | 14252 | 2020-05-01 14:43:04 |
| R27.htm | 40824 | 2020-05-01 14:43:04 |
| R28.htm | 165594 | 2020-05-01 14:43:04 |
| R29.htm | 115629 | 2020-05-01 14:43:04 |
| R3.htm | 36348 | 2020-05-01 14:43:04 |
| R30.htm | 102173 | 2020-05-01 14:43:04 |
| R31.htm | 19091 | 2020-05-01 14:43:04 |
| R32.htm | 18925 | 2020-05-01 14:43:04 |
| R33.htm | 19881 | 2020-05-01 14:43:04 |
| R34.htm | 34884 | 2020-05-01 14:43:04 |
| R35.htm | 33467 | 2020-05-01 14:43:04 |
| R36.htm | 44681 | 2020-05-01 14:43:04 |
| R37.htm | 81904 | 2020-05-01 14:43:04 |
| R38.htm | 27818 | 2020-05-01 14:43:04 |
| R39.htm | 112535 | 2020-05-01 14:43:04 |
| R4.htm | 101276 | 2020-05-01 14:43:04 |
| R40.htm | 16570 | 2020-05-01 14:43:04 |
| R41.htm | 10739 | 2020-05-01 14:43:04 |
| R42.htm | 41046 | 2020-05-01 14:43:04 |
| R43.htm | 7098 | 2020-05-01 14:43:04 |
| R44.htm | 78508 | 2020-05-01 14:43:04 |
| R45.htm | 4992 | 2020-05-01 14:43:04 |
| R46.htm | 59981 | 2020-05-01 14:43:04 |
| R47.htm | 6327 | 2020-05-01 14:43:04 |
| R48.htm | 26971 | 2020-05-01 14:43:04 |
| R49.htm | 41668 | 2020-05-01 14:43:04 |
| R5.htm | 7378 | 2020-05-01 14:43:04 |
| R50.htm | 22305 | 2020-05-01 14:43:04 |
| R51.htm | 7783 | 2020-05-01 14:43:04 |
| R52.htm | 42479 | 2020-05-01 14:43:04 |
| R53.htm | 7490 | 2020-05-01 14:43:04 |
| R54.htm | 42713 | 2020-05-01 14:43:04 |
| R55.htm | 35294 | 2020-05-01 14:43:04 |
| R56.htm | 10779 | 2020-05-01 14:43:04 |
| R57.htm | 14584 | 2020-05-01 14:43:04 |
| R58.htm | 9671 | 2020-05-01 14:43:04 |
| R59.htm | 20766 | 2020-05-01 14:43:04 |
| R6.htm | 90342 | 2020-05-01 14:43:04 |
| R60.htm | 18311 | 2020-05-01 14:43:04 |
| R61.htm | 4094 | 2020-05-01 14:43:04 |
| R62.htm | 7586 | 2020-05-01 14:43:04 |
| R63.htm | 38696 | 2020-05-01 14:43:04 |
| R64.htm | 36317 | 2020-05-01 14:43:04 |
| R65.htm | 29168 | 2020-05-01 14:43:04 |
| R66.htm | 22736 | 2020-05-01 14:43:04 |
| R67.htm | 5351 | 2020-05-01 14:43:04 |
| R68.htm | 10426 | 2020-05-01 14:43:04 |
| R69.htm | 38998 | 2020-05-01 14:43:04 |
| R7.htm | 8603 | 2020-05-01 14:43:04 |
| R70.htm | 20468 | 2020-05-01 14:43:04 |
| R71.htm | 21361 | 2020-05-01 14:43:04 |
| R72.htm | 7625 | 2020-05-01 14:43:04 |
| R73.htm | 10232 | 2020-05-01 14:43:04 |
| R74.htm | 28848 | 2020-05-01 14:43:04 |
| R75.htm | 17690 | 2020-05-01 14:43:04 |
| R76.htm | 14946 | 2020-05-01 14:43:04 |
| R77.htm | 23216 | 2020-05-01 14:43:04 |
| R78.htm | 32693 | 2020-05-01 14:43:04 |
| R79.htm | 28144 | 2020-05-01 14:43:04 |
| R8.htm | 9331 | 2020-05-01 14:43:04 |
| R80.htm | 13749 | 2020-05-01 14:43:04 |
| R81.htm | 19197 | 2020-05-01 14:43:04 |
| R82.htm | 6550 | 2020-05-01 14:43:04 |
| R83.htm | 9597 | 2020-05-01 14:43:04 |
| R84.htm | 16178 | 2020-05-01 14:43:04 |
| R85.htm | 13474 | 2020-05-01 14:43:04 |
| R86.htm | 24891 | 2020-05-01 14:43:04 |
| R9.htm | 169654 | 2020-05-01 14:43:04 |
| report.css | 2767 | 2020-05-01 14:43:04 |
 segmentopswaterfallqoqq120.jpg | 113486 | 2020-05-01 14:43:04 |
 segmentopswaterfallyoyq120.jpg | 114352 | 2020-05-01 14:43:04 |
| Show.js | 1085 | 2020-05-01 14:43:04 |