Quarterly report pursuant to Section 13 or 15(d)

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

v3.7.0.1
Earnings Per Share ("EPS") and Earnings Per Unit ("EPU") (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Numerator:        
Net income (loss) attributable to COPT $ 17,862 $ (47,419) $ 39,217 $ (40,593)
Preferred share/unit dividends/distributions (3,039) (3,553) (6,219) (7,105)
Issuance costs associated with redeemed preferred shares (6,847) 0 (6,847) 0
Income attributable to share-based compensation awards (117) (96) (242) (214)
Numerator for basic and diluted EPS on net income (loss) attributable to COPT common shareholders $ 7,859 $ (51,068) $ 25,909 $ (47,912)
Denominator (all weighted averages):        
Denominator for basic EPS (common shares) 99,036 94,300 98,725 94,251
Dilutive effect of share-based compensation awards (shares) 160 0 158 0
Denominator for diluted EPS (common shares) 99,196 94,300 98,883 94,251
Basic EPS:        
Net income (loss) attributable to COPT common shareholders - basic (in dollars per share/unit) $ 0.08 $ (0.54) $ 0.26 $ (0.51)
Diluted EPS:        
Net income (loss) attributable to COPT common shareholders - diluted (in dollars per share/unit) $ 0.08 $ (0.54) $ 0.26 $ (0.51)
Corporate Office Properties, L.P.        
Numerator:        
Net income (loss) attributable to COPT $ 18,300 $ (49,227) $ 40,454 $ (42,110)
Preferred share/unit dividends/distributions (3,204) (3,718) (6,549) (7,435)
Issuance costs associated with redeemed preferred shares (6,847) 0 (6,847) 0
Income attributable to share-based compensation awards (117) (96) (242) (214)
Numerator for basic and diluted EPS on net income (loss) attributable to COPT common shareholders $ 8,132 $ (53,041) $ 26,816 $ (49,759)
Denominator (all weighted averages):        
Denominator for basic EPS (common shares) 102,441 97,976 102,150 97,927
Dilutive effect of share-based compensation awards (shares) 160 0 158 0
Denominator for diluted EPS (common shares) 102,601 97,976 102,308 97,927
Basic EPS:        
Net income (loss) attributable to COPT common shareholders - basic (in dollars per share/unit) $ 0.08 $ (0.54) $ 0.26 $ (0.51)
Diluted EPS:        
Net income (loss) attributable to COPT common shareholders - diluted (in dollars per share/unit) $ 0.08 $ (0.54) $ 0.26 $ (0.51)