Annual report pursuant to Section 13 and 15(d)

Earnings Per Share ("EPS") and Earnings Per Unit (???EPU???) (Details)

v3.6.0.2
Earnings Per Share ("EPS") and Earnings Per Unit (“EPU”) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ 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
Numerator:                      
(Loss) income 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
Gain on sales of real estate, net                 40,986 68,047 10,671
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)
Income from continuing operations attributable to noncontrolling interests                 (4,216) (10,575) (4,955)
Income from continuing operations attributable to share-based compensation awards                 (419) (706) (432)
Numerator for basic EPS/EPU from continuing operations attributable to COPT/COPLP common shareholders/unitholders                 (3,294) 163,231 22,085
Dilutive effect of common units in COPLP on diluted EPS from continuing operations                 0 6,397 0
Numerator for diluted EPS/EPU from continuing operations attributable to COPT/COPLP common shareholders/unitholders                 (3,294) 169,628 22,085
Discontinued operations $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 394 $ (238) 0 156 26
Discontinued operations attributable to noncontrolling interests                 0 (3) 4
Numerator for basic EPS on net (loss) income attributable to COPT common shareholders                 (3,294) 163,384 22,115
Dilutive effect of common units in COPLP                 0 6,403 0
Numerator for diluted EPS on net (loss) income attributable to COPT common shareholders                 $ (3,294) $ 169,787 $ 22,115
Denominator (all weighted averages):                      
Denominator for basic EPS (common shares)                 94,502 93,914 88,092
Dilutive effect of common units                 0 3,692 0
Dilutive effect of share-based compensation awards                 0 61 171
Denominator for basic and diluted EPS (common shares)                 94,502 97,667 88,263
Basic EPS:                      
Income from continuing operations (in dollars per share/unit) [1]                 $ (0.03) $ 1.74 $ 0.25
Net income attributable to COPT common shareholders (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 EPS:                      
Income from continuing operations (in dollars per share/unit) [1]                 (0.03) 1.74 0.25
Net income attributable to COPT common shareholders (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]                      
Numerator:                      
(Loss) income 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
Gain on sales of real estate, net                 40,986 68,047 10,671
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)
Income from continuing operations attributable to noncontrolling interests                 (3,715) (3,523) (3,281)
Income from continuing operations attributable to share-based compensation awards                 (419) (706) (432)
Numerator for basic and diluted EPS/EPU from continuing operations attributable to COPT/COPLP common shareholders/unitholders                 (3,453) 169,623 23,099
Discontinued operations $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 394 $ (238) 0 156 26
Discontinued operations attributable to noncontrolling interests                 0 3 5
Numerator for basic and diluted EPU on net (loss) income attributable to COPLP common unitholders                 $ (3,453) $ 169,782 $ 23,130
Denominator (all weighted averages):                      
Denominator for basic EPS (common shares)                 98,135 97,606 91,989
Dilutive effect of share-based compensation awards                 0 61 171
Denominator for basic and diluted EPS (common shares)                 98,135 97,667 92,160
Basic EPS:                      
Income from continuing operations (in dollars per share/unit) [2]                 $ (0.04) $ 1.74 $ 0.25
Net income attributable to COPT common shareholders (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 EPS:                      
Income from continuing operations (in dollars per share/unit) [2]                 (0.04) 1.74 0.25
Net income attributable to COPT common shareholders (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.