Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000860546-23-000039-index-headers.html | 2023-09-05 07:10:31 | |
| 0000860546-23-000039-index.html | 2023-09-05 07:10:31 | |
| 0000860546-23-000039.txt | 2023-09-05 07:10:31 | |
 0000860546-23-000039-xbrl.zip | 18171 | 2023-09-05 07:10:31 |
| copt09052023ex101.htm | 18657 | 2023-09-05 07:10:31 |
| copt09052023ex31.htm | 9063 | 2023-09-05 07:10:31 |
| copt09052023ex991.htm | 16790 | 2023-09-05 07:10:31 |
| FilingSummary.xml | 1725 | 2023-09-05 07:10:31 |
| Financial_Report.xlsx | 5758 | 2023-09-05 07:10:31 |
 image_4.jpg | 886815 | 2023-09-05 07:10:31 |
 logo2dtd021015a01a18.jpg | 3929 | 2023-09-05 07:10:31 |
| MetaLinks.json | 18008 | 2023-09-05 07:10:31 |
| ofc-20230905.htm | 36459 | 2023-09-05 07:10:31 |
| ofc-20230905.xsd | 1902 | 2023-09-05 07:10:31 |
| ofc-20230905_htm.xml | 2945 | 2023-09-05 07:10:31 |
| ofc-20230905_lab.xml | 26157 | 2023-09-05 07:10:31 |
| ofc-20230905_pre.xml | 13586 | 2023-09-05 07:10:31 |
| R1.htm | 41159 | 2023-09-05 07:10:31 |
| report.css | 2767 | 2023-09-05 07:10:31 |
| Show.js | 1085 | 2023-09-05 07:10:31 |