Annual report pursuant to Section 13 and 15(d)

Earnings Per Share ("EPS") (Details)

v2.4.0.6
Earnings Per Share ("EPS") (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Numerator:                      
(Loss) income from continuing operations $ 15,743 $ (31,850) $ 10,065 $ 12,685 $ (60,325) $ 1,669 $ (397) $ (22,851) $ 6,643 $ (81,904) $ 25,621
Gain on sales of real estate, net                 21 2,732 2,829
Preferred share dividends (6,106) (6,546) (4,167) (4,025) (4,026) (4,025) (4,026) (4,025) (20,844) (16,102) (16,102)
Issuance costs associated with redeemed preferred shares 0 (1,827) 0 0         (1,827) 0 0
Loss (income) from continuing operations attributable to noncontrolling interests                 1,387 5,288 (1,421)
Income from continuing operations attributable to restricted shares                 (469) (1,037) (1,071)
Numerator for basic and diluted EPS from continuing operations attributable to COPT common shareholders                 (15,089) (91,023) 9,856
Numerator for basic and diluted EPS from continuing operations attributable to COPT common shareholders                 (15,089) (91,023) 9,856
Discontinued operations 3,267 11,085 1,775 (2,450) (30,781) 5,801 (25,008) 1,584 13,677 (48,404) 17,054
Discontinued operations attributable to noncontrolling interests                 (751) 2,860 (1,323)
Numerator for basic and diluted EPS on net (loss) income attributable to COPT common shareholders                 $ (2,163) $ (136,567) $ 25,587
Denominator (all weighted averages):                      
Denominator for basic EPS (common shares)                 73,454 69,382 59,611
Dilutive effect of share-based compensation awards                 0 0 333
Denominator for diluted EPS                 73,454 69,382 59,944
Basic EPS:                      
(Loss) income from continuing operations (in dollars per share)                 $ (0.21) [1] $ (1.31) [1] $ 0.17 [1]
Discontinued operations attributable to COPT common shareholders (in dollars per share)                 $ 0.18 [1] $ (0.66) [1] $ 0.26 [1]
Net (loss) income attributable to COPT common shareholders (in dollars per share) $ 0.16 $ (0.39) $ 0.10 $ 0.09 $ (1.26) $ 0.04 $ (0.40) $ (0.33) $ (0.03) [1] $ (1.97) [1] $ 0.43 [1]
Diluted EPS:                      
Loss from continuing operations attributable to COPT common shareholders (in dollars per share)                 $ (0.21) [1] $ (1.31) [1] $ 0.17 [1]
Discontinued operations attributable to COPT common shareholders (in dollars per share)                 $ 0.18 [1] $ (0.66) [1] $ 0.26 [1]
Net (loss) income attributable to COPT common shareholders (in dollars per share) $ 0.16 $ (0.39) $ 0.10 $ 0.09 $ (1.26) $ 0.04 $ (0.41) $ (0.33) $ (0.03) [1] $ (1.97) [1] $ 0.43 [1]
[1] Basic and diluted earnings per common share are calculated based on amounts attributable to common shareholders of Corporate Office Properties Trust.