Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000860546-22-000039-index-headers.html | 2022-08-02 15:25:21 | |
| 0000860546-22-000039-index.html | 2022-08-02 15:25:21 | |
| 0000860546-22-000039.txt | 2022-08-02 15:25:21 | |
 0000860546-22-000039-xbrl.zip | 445537 | 2022-08-02 15:25:21 |
| copt06302022ex311.htm | 11707 | 2022-08-02 15:25:21 |
| copt06302022ex312.htm | 11685 | 2022-08-02 15:25:21 |
| copt06302022ex321.htm | 5346 | 2022-08-02 15:25:21 |
| copt06302022ex322.htm | 5303 | 2022-08-02 15:25:21 |
| FilingSummary.xml | 52948 | 2022-08-02 15:25:21 |
| Financial_Report.xlsx | 139263 | 2022-08-02 15:25:21 |
| MetaLinks.json | 950954 | 2022-08-02 15:25:21 |
| ofc-20220630.htm | 2868518 | 2022-08-02 15:25:21 |
| ofc-20220630.xsd | 90468 | 2022-08-02 15:25:21 |
| ofc-20220630_cal.xml | 135350 | 2022-08-02 15:25:21 |
| ofc-20220630_def.xml | 417076 | 2022-08-02 15:25:21 |
 ofc-20220630_g1.jpg | 41746 | 2022-08-02 15:25:21 |
| ofc-20220630_htm.xml | 3212425 | 2022-08-02 15:25:21 |
| ofc-20220630_lab.xml | 990716 | 2022-08-02 15:25:21 |
| ofc-20220630_pre.xml | 643767 | 2022-08-02 15:25:21 |
| R1.htm | 53744 | 2022-08-02 15:25:21 |
| R10.htm | 10031 | 2022-08-02 15:25:21 |
| R11.htm | 34185 | 2022-08-02 15:25:21 |
| R12.htm | 37634 | 2022-08-02 15:25:21 |
| R13.htm | 309497 | 2022-08-02 15:25:21 |
| R14.htm | 35715 | 2022-08-02 15:25:21 |
| R15.htm | 13268 | 2022-08-02 15:25:21 |
| R16.htm | 21611 | 2022-08-02 15:25:21 |
| R17.htm | 64962 | 2022-08-02 15:25:21 |
| R18.htm | 49094 | 2022-08-02 15:25:21 |
| R19.htm | 14498 | 2022-08-02 15:25:21 |
| R2.htm | 121623 | 2022-08-02 15:25:21 |
| R20.htm | 10572 | 2022-08-02 15:25:21 |
| R21.htm | 69746 | 2022-08-02 15:25:21 |
| R22.htm | 290464 | 2022-08-02 15:25:21 |
| R23.htm | 53287 | 2022-08-02 15:25:21 |
| R24.htm | 18516 | 2022-08-02 15:25:21 |
| R25.htm | 71278 | 2022-08-02 15:25:21 |
| R26.htm | 9681 | 2022-08-02 15:25:21 |
| R27.htm | 13219 | 2022-08-02 15:25:21 |
| R28.htm | 28274 | 2022-08-02 15:25:21 |
| R29.htm | 41135 | 2022-08-02 15:25:21 |
| R3.htm | 17656 | 2022-08-02 15:25:21 |
| R30.htm | 100056 | 2022-08-02 15:25:21 |
| R31.htm | 37373 | 2022-08-02 15:25:21 |
| R32.htm | 12120 | 2022-08-02 15:25:21 |
| R33.htm | 21457 | 2022-08-02 15:25:21 |
| R34.htm | 63068 | 2022-08-02 15:25:21 |
| R35.htm | 54489 | 2022-08-02 15:25:21 |
| R36.htm | 12932 | 2022-08-02 15:25:21 |
| R37.htm | 68644 | 2022-08-02 15:25:21 |
| R38.htm | 295413 | 2022-08-02 15:25:21 |
| R39.htm | 49696 | 2022-08-02 15:25:21 |
| R4.htm | 130407 | 2022-08-02 15:25:21 |
| R40.htm | 8522 | 2022-08-02 15:25:21 |
| R41.htm | 69240 | 2022-08-02 15:25:21 |
| R42.htm | 29856 | 2022-08-02 15:25:21 |
| R43.htm | 11449 | 2022-08-02 15:25:21 |
| R44.htm | 11678 | 2022-08-02 15:25:21 |
| R45.htm | 36532 | 2022-08-02 15:25:21 |
| R46.htm | 14436 | 2022-08-02 15:25:21 |
| R47.htm | 22776 | 2022-08-02 15:25:21 |
| R48.htm | 18053 | 2022-08-02 15:25:21 |
| R49.htm | 27260 | 2022-08-02 15:25:21 |
| R5.htm | 38470 | 2022-08-02 15:25:21 |
| R50.htm | 15438 | 2022-08-02 15:25:21 |
| R51.htm | 36733 | 2022-08-02 15:25:21 |
| R52.htm | 3909 | 2022-08-02 15:25:21 |
| R53.htm | 11800 | 2022-08-02 15:25:21 |
| R54.htm | 6779 | 2022-08-02 15:25:21 |
| R55.htm | 14394 | 2022-08-02 15:25:21 |
| R56.htm | 6904 | 2022-08-02 15:25:21 |
| R57.htm | 20542 | 2022-08-02 15:25:21 |
| R58.htm | 41364 | 2022-08-02 15:25:21 |
| R59.htm | 12250 | 2022-08-02 15:25:21 |
| R6.htm | 59432 | 2022-08-02 15:25:21 |
| R60.htm | 21142 | 2022-08-02 15:25:21 |
| R61.htm | 19694 | 2022-08-02 15:25:21 |
| R62.htm | 16848 | 2022-08-02 15:25:21 |
| R63.htm | 38097 | 2022-08-02 15:25:21 |
| R64.htm | 79397 | 2022-08-02 15:25:21 |
| R65.htm | 21777 | 2022-08-02 15:25:21 |
| R66.htm | 4609 | 2022-08-02 15:25:21 |
| R67.htm | 17847 | 2022-08-02 15:25:21 |
| R68.htm | 29871 | 2022-08-02 15:25:21 |
| R69.htm | 11914 | 2022-08-02 15:25:21 |
| R7.htm | 11472 | 2022-08-02 15:25:21 |
| R70.htm | 12891 | 2022-08-02 15:25:21 |
| R71.htm | 13022 | 2022-08-02 15:25:21 |
| R72.htm | 16851 | 2022-08-02 15:25:21 |
| R73.htm | 6781 | 2022-08-02 15:25:21 |
| R74.htm | 36725 | 2022-08-02 15:25:21 |
| R75.htm | 40911 | 2022-08-02 15:25:21 |
| R76.htm | 3944 | 2022-08-02 15:25:21 |
| R77.htm | 101536 | 2022-08-02 15:25:21 |
| R78.htm | 56197 | 2022-08-02 15:25:21 |
| R79.htm | 59375 | 2022-08-02 15:25:21 |
| R8.htm | 137626 | 2022-08-02 15:25:21 |
| R80.htm | 20861 | 2022-08-02 15:25:21 |
| R81.htm | 24614 | 2022-08-02 15:25:21 |
| R82.htm | 20887 | 2022-08-02 15:25:21 |
| R83.htm | 10132 | 2022-08-02 15:25:21 |
| R84.htm | 6057 | 2022-08-02 15:25:21 |
| R85.htm | 69699 | 2022-08-02 15:25:21 |
| R86.htm | 87809 | 2022-08-02 15:25:21 |
| R87.htm | 17727 | 2022-08-02 15:25:21 |
| R88.htm | 14805 | 2022-08-02 15:25:21 |
| R9.htm | 9892 | 2022-08-02 15:25:21 |
| report.css | 2768 | 2022-08-02 15:25:21 |
| Show.js | 1086 | 2022-08-02 15:25:21 |