Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000866609-20-000033-index-headers.html | 2020-05-07 16:09:50 | |
| 0000866609-20-000033-index.html | 2020-05-07 16:09:50 | |
| 0000866609-20-000033.txt | 2020-05-07 16:09:50 | |
 0000866609-20-000033-xbrl.zip | 241604 | 2020-05-07 16:09:50 |
| ex101wgionsettlementredact.htm | 139322 | 2020-05-07 16:09:50 |
| ex311ceosec302cert03312020.htm | 12981 | 2020-05-07 16:09:50 |
| ex312cfosec302cert03312020.htm | 12963 | 2020-05-07 16:09:50 |
| ex321ceosec906cert03312020.htm | 6261 | 2020-05-07 16:09:50 |
| ex322cfosec906cert03312020.htm | 6300 | 2020-05-07 16:09:50 |
| FilingSummary.xml | 36596 | 2020-05-07 16:09:50 |
| Financial_Report.xlsx | 80721 | 2020-05-07 16:09:50 |
| io-03312020x10q.htm | 1444310 | 2020-05-07 16:09:50 |
| io-20200331.xml | 2580908 | 2020-05-07 16:09:50 |
| io-20200331.xsd | 49427 | 2020-05-07 16:09:50 |
| io-20200331_cal.xml | 97870 | 2020-05-07 16:09:50 |
| io-20200331_def.xml | 296277 | 2020-05-07 16:09:50 |
| io-20200331_lab.xml | 638461 | 2020-05-07 16:09:50 |
| io-20200331_pre.xml | 438631 | 2020-05-07 16:09:50 |
| R1.htm | 27893 | 2020-05-07 16:09:50 |
| R10.htm | 57590 | 2020-05-07 16:09:50 |
| R11.htm | 56047 | 2020-05-07 16:09:50 |
| R12.htm | 44932 | 2020-05-07 16:09:50 |
| R13.htm | 6343 | 2020-05-07 16:09:50 |
| R14.htm | 10363 | 2020-05-07 16:09:50 |
| R15.htm | 14297 | 2020-05-07 16:09:50 |
| R16.htm | 65549 | 2020-05-07 16:09:50 |
| R17.htm | 28275 | 2020-05-07 16:09:50 |
| R18.htm | 78682 | 2020-05-07 16:09:50 |
| R19.htm | 22996 | 2020-05-07 16:09:50 |
| R2.htm | 83951 | 2020-05-07 16:09:50 |
| R20.htm | 10120 | 2020-05-07 16:09:50 |
| R21.htm | 613806 | 2020-05-07 16:09:50 |
| R22.htm | 16486 | 2020-05-07 16:09:50 |
| R23.htm | 56843 | 2020-05-07 16:09:50 |
| R24.htm | 51203 | 2020-05-07 16:09:50 |
| R25.htm | 28956 | 2020-05-07 16:09:50 |
| R26.htm | 66617 | 2020-05-07 16:09:50 |
| R27.htm | 44306 | 2020-05-07 16:09:50 |
| R28.htm | 65094 | 2020-05-07 16:09:50 |
| R29.htm | 22186 | 2020-05-07 16:09:50 |
| R3.htm | 8543 | 2020-05-07 16:09:50 |
| R30.htm | 613144 | 2020-05-07 16:09:50 |
| R31.htm | 30529 | 2020-05-07 16:09:50 |
| R32.htm | 12228 | 2020-05-07 16:09:50 |
| R33.htm | 52551 | 2020-05-07 16:09:50 |
| R34.htm | 13469 | 2020-05-07 16:09:50 |
| R35.htm | 19133 | 2020-05-07 16:09:50 |
| R36.htm | 15442 | 2020-05-07 16:09:50 |
| R37.htm | 17802 | 2020-05-07 16:09:50 |
| R38.htm | 21821 | 2020-05-07 16:09:50 |
| R39.htm | 50584 | 2020-05-07 16:09:50 |
| R4.htm | 64336 | 2020-05-07 16:09:50 |
| R40.htm | 11684 | 2020-05-07 16:09:50 |
| R41.htm | 10628 | 2020-05-07 16:09:50 |
| R42.htm | 11582 | 2020-05-07 16:09:50 |
| R43.htm | 34351 | 2020-05-07 16:09:50 |
| R44.htm | 13762 | 2020-05-07 16:09:50 |
| R45.htm | 26187 | 2020-05-07 16:09:50 |
| R46.htm | 13201 | 2020-05-07 16:09:50 |
| R47.htm | 18540 | 2020-05-07 16:09:50 |
| R48.htm | 15092 | 2020-05-07 16:09:50 |
| R49.htm | 31159 | 2020-05-07 16:09:50 |
| R5.htm | 23476 | 2020-05-07 16:09:50 |
| R50.htm | 13048 | 2020-05-07 16:09:50 |
| R51.htm | 19592 | 2020-05-07 16:09:50 |
| R52.htm | 57734 | 2020-05-07 16:09:50 |
| R53.htm | 7087 | 2020-05-07 16:09:50 |
| R54.htm | 23505 | 2020-05-07 16:09:50 |
| R55.htm | 8436 | 2020-05-07 16:09:50 |
| R56.htm | 170381 | 2020-05-07 16:09:50 |
| R57.htm | 81209 | 2020-05-07 16:09:50 |
| R58.htm | 56573 | 2020-05-07 16:09:50 |
| R59.htm | 33108 | 2020-05-07 16:09:50 |
| R6.htm | 66112 | 2020-05-07 16:09:50 |
| R7.htm | 38541 | 2020-05-07 16:09:50 |
| R8.htm | 20304 | 2020-05-07 16:09:50 |
| R9.htm | 8718 | 2020-05-07 16:09:50 |
| report.css | 2767 | 2020-05-07 16:09:50 |
| Show.js | 1085 | 2020-05-07 16:09:50 |