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v3.6.0.2

Quarterly Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Quarterly Data [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 141,991 | $ 142,103 | $ 145,927 | $ 144,307 | $ 143,325 | $ 150,744 | $ 170,363 | $ 161,034 | $ 574,328 |  | $ 625,466 |  | $ 586,473 |
Operating income | 37,442 | 11,525 | (27,021) | 30,464 | 20,055 | 31,993 | 37,471 | 30,575 | 52,410 |  | 120,094 |  | 131,612 |
Income (loss) from continuing operations | 19,718 | (4,829) | (48,316) | 8,096 | (1,430) | 94,279 | 16,839 | 10,987 | (25,331) |  | 120,675 |  | 34,509 |
Discontinued operations | 0 | 0 | 0 | 0 | 0 | 0 | 394 | (238) | 0 |  | 156 |  | 26 |
Net income | 26,603 | 29,272 | (48,316) | 8,096 | 62,617 | 94,294 | 17,232 | 14,735 | 15,655 |  | 188,878 |  | 45,206 |
Net income attributable to noncontrolling interests | (1,870) | (1,973) | 897 | (1,270) | (3,253) | (4,494) | (1,451) | (1,380) |  |  |  |  |  |
Net income attributable to COPT | 24,733 | 27,299 | (47,419) | 6,826 | 59,364 | 89,800 | 15,781 | 13,355 | 11,439 |  | 178,300 |  | 40,255 |
Preferred share/ unit dividends/ distributions | (3,640) | (3,552) | (3,553) | (3,552) | (3,553) | (3,552) | (3,553) | (3,552) | (14,297) |  | (14,210) |  | (15,939) |
Issuance costs associated with redeemed preferred shares | (17) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | (17) |  | 0 |  | (1,769) |
Net (loss) income attributable to COPT common shareholders | $ 21,076 | $ 23,747 | $ (50,972) | $ 3,274 | $ 55,811 | $ 86,248 | $ 12,228 | $ 9,803 | $ (2,875) |  | $ 164,090 |  | $ 22,547 |
Basic earnings per common share/unit (in dollars per share/unit) | $ 0.22 | $ 0.25 | $ (0.54) | $ 0.03 | $ 0.59 | $ 0.91 | $ 0.13 | $ 0.10 | $ (0.03) | [1] | $ 1.74 | [1] | $ 0.25 | [1]
Diluted earnings per common share/unit (in dollars per share/unit) | $ 0.22 | $ 0.25 | $ (0.54) | $ 0.03 | $ 0.59 | $ 0.91 | $ 0.13 | $ 0.10 | $ (0.03) | [1] | $ 1.74 | [1] | $ 0.25 | [1]
Corporate Office Properties, L.P. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly Data [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 141,991 | $ 142,103 | $ 145,927 | $ 144,307 | $ 143,325 | $ 150,744 | $ 170,363 | $ 161,034 | $ 574,328 |  | $ 625,466 |  | $ 586,473 |
Operating income | 37,442 | 11,525 | (27,021) | 30,464 | 20,055 | 31,993 | 37,471 | 30,575 | 52,410 |  | 120,094 |  | 131,612 |
Income (loss) from continuing operations | 19,718 | (4,829) | (48,316) | 8,096 | (1,430) | 94,279 | 16,839 | 10,987 | (25,331) |  | 120,675 |  | 34,509 |
Discontinued operations | 0 | 0 | 0 | 0 | 0 | 0 | 394 | (238) | 0 |  | 156 |  | 26 |
Net income | 26,603 | 29,272 | (48,316) | 8,096 | 62,617 | 94,294 | 17,232 | 14,735 | 15,655 |  | 188,878 |  | 45,206 |
Net income attributable to noncontrolling interests | (912) | (913) | (911) | (979) | (918) | (972) | (812) | (818) | (3,715) |  | (3,520) |  | (3,276) |
Net income attributable to COPT | 25,691 | 28,359 | (49,227) | 7,117 | 61,699 | 93,322 | 16,420 | 13,917 | 11,940 |  | 185,358 |  | 41,930 |
Preferred share/ unit dividends/ distributions | (3,805) | (3,717) | (3,718) | (3,717) | (3,718) | (3,717) | (3,718) | (3,717) | (14,957) |  | (14,870) |  | (16,599) |
Issuance costs associated with redeemed preferred shares | (17) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | (17) |  | 0 |  | (1,769) |
Net (loss) income attributable to COPT common shareholders | $ 21,869 | $ 24,642 | $ (52,945) | $ 3,400 | $ 57,981 | $ 89,605 | $ 12,702 | $ 10,200 | $ (3,034) |  | $ 170,488 |  | $ 23,562 |
Basic earnings per common share/unit (in dollars per share/unit) | $ 0.22 | $ 0.25 | $ (0.54) | $ 0.03 | $ 0.59 | $ 0.91 | $ 0.13 | $ 0.10 | $ (0.04) | [2] | $ 1.74 | [2] | $ 0.25 | [2]
Diluted earnings per common share/unit (in dollars per share/unit) | $ 0.22 | $ 0.25 | $ (0.54) | $ 0.03 | $ 0.59 | $ 0.91 | $ 0.13 | $ 0.10 | $ (0.04) | [2] | $ 1.74 | [2] | $ 0.25 | [2]
[1] | Basic and diluted earnings per common share are calculated based on amounts attributable to common shareholders of Corporate Office Properties Trust.
[2] | Basic and diluted earnings per common unit are calculated based on amounts attributable to common unitholders of Corporate Office Properties, L.P.

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