Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share ("EPS") (Details)

v3.21.1
Earnings Per Share ("EPS") (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Numerator:    
Net (loss) income attributable to COPT $ (6,669) $ 24,054
Income attributable to share-based compensation awards (170) (105)
Numerator for basic EPS on net income attributable to COPT common shareholders (6,839) 23,949
Income attributable to share-based compensation awards 0 8
Numerator for diluted EPS on net income attributable to COPT common shareholders $ (6,839) $ 23,957
Denominator (all weighted averages):    
Denominator for basic EPS (common shares) 111,888 111,724
Dilutive effect of share-based compensation awards (in shares) 0 239
Denominator for diluted EPS (common shares) 111,888 111,963
Basic EPS:    
Basic EPS (in dollars per share) [1] $ (0.06) $ 0.21
Diluted EPS:    
Diluted EPS (in dollars per share) [1] $ (0.06) $ 0.21
[1] Basic and diluted earnings per common share are calculated based on amounts attributable to common shareholders of Corporate Office Properties Trust.