Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000073756-25-000160-index-headers.html | 2025-07-24 16:44:32 | |
| 0000073756-25-000160-index.html | 2025-07-24 16:44:32 | |
| 0000073756-25-000160.txt | 2025-07-24 16:44:32 | |
 0000073756-25-000160-xbrl.zip | 248596 | 2025-07-24 16:44:32 |
| FilingSummary.xml | 22920 | 2025-07-24 16:44:32 |
| MetaLinks.json | 912739 | 2025-07-24 16:44:32 |
| oii-20250630.htm | 1201955 | 2025-07-24 16:44:32 |
| oii-20250630.xsd | 41916 | 2025-07-24 16:44:32 |
| oii-20250630_cal.xml | 59079 | 2025-07-24 16:44:32 |
| oii-20250630_def.xml | 346248 | 2025-07-24 16:44:32 |
 oii-20250630_g1.jpg | 20693 | 2025-07-24 16:44:32 |
| oii-20250630_htm.xml | 792924 | 2025-07-24 16:44:32 |
| oii-20250630_lab.xml | 576496 | 2025-07-24 16:44:32 |
| oii-20250630_pre.xml | 491702 | 2025-07-24 16:44:32 |
| oii_exhibitx3101x2q2025.htm | 10921 | 2025-07-24 16:44:32 |
| oii_exhibitx3102x2q2025.htm | 10987 | 2025-07-24 16:44:32 |
| oii_exhibitx3201x2q2025.htm | 6300 | 2025-07-24 16:44:32 |
| oii_exhibitx3202x2q2025.htm | 5673 | 2025-07-24 16:44:32 |
| R1.htm | 55249 | 2025-07-24 16:44:32 |
| R10.htm | 27991 | 2025-07-24 16:44:32 |
| R11.htm | 12592 | 2025-07-24 16:44:32 |
| R12.htm | 10107 | 2025-07-24 16:44:32 |
| R13.htm | 22528 | 2025-07-24 16:44:32 |
| R14.htm | 14742 | 2025-07-24 16:44:32 |
| R15.htm | 9626 | 2025-07-24 16:44:32 |
| R16.htm | 5582 | 2025-07-24 16:44:32 |
| R17.htm | 270894 | 2025-07-24 16:44:32 |
| R18.htm | 11638 | 2025-07-24 16:44:32 |
| R19.htm | 6292 | 2025-07-24 16:44:32 |
| R2.htm | 138392 | 2025-07-24 16:44:32 |
| R20.htm | 73804 | 2025-07-24 16:44:32 |
| R21.htm | 19705 | 2025-07-24 16:44:32 |
| R22.htm | 45273 | 2025-07-24 16:44:32 |
| R23.htm | 14326 | 2025-07-24 16:44:32 |
| R24.htm | 18278 | 2025-07-24 16:44:32 |
| R25.htm | 30974 | 2025-07-24 16:44:32 |
| R26.htm | 47523 | 2025-07-24 16:44:32 |
| R27.htm | 18846 | 2025-07-24 16:44:32 |
| R28.htm | 83013 | 2025-07-24 16:44:32 |
| R29.htm | 12007 | 2025-07-24 16:44:32 |
| R3.htm | 21525 | 2025-07-24 16:44:32 |
| R30.htm | 43471 | 2025-07-24 16:44:32 |
| R31.htm | 16725 | 2025-07-24 16:44:32 |
| R32.htm | 65192 | 2025-07-24 16:44:32 |
| R33.htm | 22509 | 2025-07-24 16:44:32 |
| R34.htm | 27667 | 2025-07-24 16:44:32 |
| R35.htm | 11658 | 2025-07-24 16:44:32 |
| R36.htm | 14941 | 2025-07-24 16:44:32 |
| R37.htm | 21201 | 2025-07-24 16:44:32 |
| R38.htm | 131266 | 2025-07-24 16:44:32 |
| R4.htm | 100726 | 2025-07-24 16:44:32 |
| R5.htm | 30316 | 2025-07-24 16:44:32 |
| R6.htm | 80410 | 2025-07-24 16:44:32 |
| R7.htm | 114879 | 2025-07-24 16:44:32 |
| R8.htm | 152433 | 2025-07-24 16:44:32 |
| R9.htm | 30417 | 2025-07-24 16:44:32 |
| report.css | 2767 | 2025-07-24 16:44:32 |
| Show.js | 1085 | 2025-07-24 16:44:32 |