Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000860546-14-000008-index-headers.html | 2014-03-03 09:26:34 | |
| 0000860546-14-000008-index.html | 2014-03-03 09:26:34 | |
| 0000860546-14-000008.txt | 2014-03-03 09:26:34 | |
 0000860546-14-000008-xbrl.zip | 783505 | 2014-03-03 09:26:34 |
| copt1231201310k.htm | 6926551 | 2014-03-03 09:26:34 |
| copt12312013ex121.htm | 101986 | 2014-03-03 09:26:34 |
| copt12312013ex122.htm | 83877 | 2014-03-03 09:26:34 |
| copt12312013ex211.htm | 384568 | 2014-03-03 09:26:34 |
| copt12312013ex212.htm | 381198 | 2014-03-03 09:26:34 |
| copt12312013ex231.htm | 3012 | 2014-03-03 09:26:34 |
| copt12312013ex232.htm | 3000 | 2014-03-03 09:26:34 |
| copt12312013ex311.htm | 13277 | 2014-03-03 09:26:34 |
| copt12312013ex312.htm | 13257 | 2014-03-03 09:26:34 |
| copt12312013ex313.htm | 14464 | 2014-03-03 09:26:34 |
| copt12312013ex314.htm | 13491 | 2014-03-03 09:26:34 |
| copt12312013ex321.htm | 5814 | 2014-03-03 09:26:34 |
| copt12312013ex322.htm | 5774 | 2014-03-03 09:26:34 |
| copt12312013ex323.htm | 5991 | 2014-03-03 09:26:34 |
| copt12312013ex324.htm | 6066 | 2014-03-03 09:26:34 |
 copt123120_chart-02864.jpg | 62829 | 2014-03-03 09:26:34 |
| FilingSummary.xml | 52381 | 2014-03-03 09:26:34 |
| Financial_Report.xls | 7033309 | 2014-03-03 09:26:34 |
| Financial_Report.xlsx | 752899 | 2014-03-03 09:26:34 |
| ofc-20131231.xml | 8267554 | 2014-03-03 09:26:34 |
| ofc-20131231.xsd | 200065 | 2014-03-03 09:26:34 |
| ofc-20131231_cal.xml | 191178 | 2014-03-03 09:26:34 |
| ofc-20131231_def.xml | 901835 | 2014-03-03 09:26:34 |
| ofc-20131231_lab.xml | 2119082 | 2014-03-03 09:26:34 |
| ofc-20131231_pre.xml | 1106158 | 2014-03-03 09:26:34 |
| R1.htm | 43289 | 2014-03-03 09:26:34 |
| R10.htm | 15914 | 2014-03-03 09:26:34 |
| R100.htm | 1372908 | 2014-03-03 09:26:34 |
| R101.htm | 49017 | 2014-03-03 09:26:34 |
| R11.htm | 66307 | 2014-03-03 09:26:34 |
| R12.htm | 288706 | 2014-03-03 09:26:34 |
| R13.htm | 27268 | 2014-03-03 09:26:34 |
| R14.htm | 121305 | 2014-03-03 09:26:34 |
| R15.htm | 87360 | 2014-03-03 09:26:34 |
| R16.htm | 47852 | 2014-03-03 09:26:34 |
| R17.htm | 16565 | 2014-03-03 09:26:34 |
| R18.htm | 17491 | 2014-03-03 09:26:34 |
| R19.htm | 24056 | 2014-03-03 09:26:34 |
| R2.htm | 145824 | 2014-03-03 09:26:34 |
| R20.htm | 150890 | 2014-03-03 09:26:34 |
| R21.htm | 96044 | 2014-03-03 09:26:34 |
| R22.htm | 25499 | 2014-03-03 09:26:34 |
| R23.htm | 48474 | 2014-03-03 09:26:34 |
| R24.htm | 90999 | 2014-03-03 09:26:34 |
| R25.htm | 160741 | 2014-03-03 09:26:34 |
| R26.htm | 16604 | 2014-03-03 09:26:34 |
| R27.htm | 364895 | 2014-03-03 09:26:34 |
| R28.htm | 154544 | 2014-03-03 09:26:34 |
| R29.htm | 61088 | 2014-03-03 09:26:34 |
| R3.htm | 16693 | 2014-03-03 09:26:34 |
| R30.htm | 172672 | 2014-03-03 09:26:34 |
| R31.htm | 198251 | 2014-03-03 09:26:34 |
| R32.htm | 27302 | 2014-03-03 09:26:34 |
| R33.htm | 65494 | 2014-03-03 09:26:34 |
| R34.htm | 1150343 | 2014-03-03 09:26:34 |
| R35.htm | 115539 | 2014-03-03 09:26:34 |
| R36.htm | 19666 | 2014-03-03 09:26:34 |
| R37.htm | 268118 | 2014-03-03 09:26:34 |
| R38.htm | 24646 | 2014-03-03 09:26:34 |
| R39.htm | 117150 | 2014-03-03 09:26:34 |
| R4.htm | 21709 | 2014-03-03 09:26:34 |
| R40.htm | 72769 | 2014-03-03 09:26:34 |
| R41.htm | 44041 | 2014-03-03 09:26:34 |
| R42.htm | 16392 | 2014-03-03 09:26:34 |
| R43.htm | 15075 | 2014-03-03 09:26:34 |
| R44.htm | 22638 | 2014-03-03 09:26:34 |
| R45.htm | 129300 | 2014-03-03 09:26:34 |
| R46.htm | 96140 | 2014-03-03 09:26:34 |
| R47.htm | 24284 | 2014-03-03 09:26:34 |
| R48.htm | 33371 | 2014-03-03 09:26:34 |
| R49.htm | 57352 | 2014-03-03 09:26:34 |
| R5.htm | 186807 | 2014-03-03 09:26:34 |
| R50.htm | 144483 | 2014-03-03 09:26:34 |
| R51.htm | 14960 | 2014-03-03 09:26:34 |
| R52.htm | 371201 | 2014-03-03 09:26:34 |
| R53.htm | 156009 | 2014-03-03 09:26:34 |
| R54.htm | 49730 | 2014-03-03 09:26:34 |
| R55.htm | 163588 | 2014-03-03 09:26:34 |
| R56.htm | 196705 | 2014-03-03 09:26:34 |
| R57.htm | 16992 | 2014-03-03 09:26:34 |
| R58.htm | 19591 | 2014-03-03 09:26:34 |
| R59.htm | 11424 | 2014-03-03 09:26:34 |
| R6.htm | 44317 | 2014-03-03 09:26:34 |
| R60.htm | 19714 | 2014-03-03 09:26:34 |
| R61.htm | 17944 | 2014-03-03 09:26:34 |
| R62.htm | 10285 | 2014-03-03 09:26:34 |
| R63.htm | 23834 | 2014-03-03 09:26:34 |
| R64.htm | 72757 | 2014-03-03 09:26:34 |
| R65.htm | 71407 | 2014-03-03 09:26:34 |
| R66.htm | 26230 | 2014-03-03 09:26:34 |
| R67.htm | 17225 | 2014-03-03 09:26:34 |
| R68.htm | 7552 | 2014-03-03 09:26:34 |
| R69.htm | 35133 | 2014-03-03 09:26:34 |
| R7.htm | 214797 | 2014-03-03 09:26:34 |
| R70.htm | 62814 | 2014-03-03 09:26:34 |
| R71.htm | 118624 | 2014-03-03 09:26:34 |
| R72.htm | 46647 | 2014-03-03 09:26:34 |
| R73.htm | 13862 | 2014-03-03 09:26:34 |
| R74.htm | 10097 | 2014-03-03 09:26:34 |
| R75.htm | 40817 | 2014-03-03 09:26:34 |
| R76.htm | 276186 | 2014-03-03 09:26:34 |
| R77.htm | 44679 | 2014-03-03 09:26:34 |
| R78.htm | 26942 | 2014-03-03 09:26:34 |
| R79.htm | 76184 | 2014-03-03 09:26:34 |
| R8.htm | 24585 | 2014-03-03 09:26:34 |
| R80.htm | 15487 | 2014-03-03 09:26:34 |
| R81.htm | 84961 | 2014-03-03 09:26:34 |
| R82.htm | 130668 | 2014-03-03 09:26:34 |
| R83.htm | 101513 | 2014-03-03 09:26:34 |
| R84.htm | 102247 | 2014-03-03 09:26:34 |
| R85.htm | 10567 | 2014-03-03 09:26:34 |
| R86.htm | 37119 | 2014-03-03 09:26:34 |
| R87.htm | 8749 | 2014-03-03 09:26:34 |
| R88.htm | 20830 | 2014-03-03 09:26:34 |
| R89.htm | 61979 | 2014-03-03 09:26:34 |
| R9.htm | 260317 | 2014-03-03 09:26:34 |
| R90.htm | 87749 | 2014-03-03 09:26:34 |
| R91.htm | 9844 | 2014-03-03 09:26:34 |
| R92.htm | 65416 | 2014-03-03 09:26:34 |
| R93.htm | 95407 | 2014-03-03 09:26:34 |
| R94.htm | 72335 | 2014-03-03 09:26:34 |
| R95.htm | 113443 | 2014-03-03 09:26:34 |
| R96.htm | 17820 | 2014-03-03 09:26:34 |
| R97.htm | 63315 | 2014-03-03 09:26:34 |
| R98.htm | 48990 | 2014-03-03 09:26:34 |
| R99.htm | 26871 | 2014-03-03 09:26:34 |
| report.css | 2740 | 2014-03-03 09:26:34 |
| Show.js | 1410 | 2014-03-03 09:26:34 |