Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share ("EPS") (Details)

v3.21.2
Earnings Per Share ("EPS") (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Numerator:        
Net income (loss) attributable to COPT $ 27,101 $ (31,845) $ 62,833 $ 15,706
Income attributable to share-based compensation awards (92) (145) (337) (365)
Numerator for basic EPS on net income (loss) attributable to COPT common shareholders 27,009 (31,990) 62,496 15,341
Redeemable noncontrolling interests (89) 0 (82) 0
Income attributable to share-based compensation awards 13 0 17 6
Numerator for diluted EPS on net income (loss) attributable to COPT common shareholders $ 26,933 $ (31,990) $ 62,431 $ 15,347
Denominator (all weighted averages):        
Denominator for basic EPS (common shares) 111,985 111,811 111,949 111,778
Dilutive effect of redeemable noncontrolling interests 138 0 130 0
Dilutive effect of share-based compensation awards (in shares) 375 0 285 278
Denominator for diluted EPS (common shares) 112,498 111,811 112,364 112,056
Basic EPS:        
Basic EPS (in dollars per share) [1] $ 0.24 $ (0.29) $ 0.56 $ 0.14
Diluted EPS:        
Diluted EPS (in dollars per share) [1] $ 0.24 $ (0.29) $ 0.56 $ 0.14
[1] Basic and diluted earnings per common share are calculated based on amounts attributable to common shareholders of Corporate Office Properties Trust.