Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share ("EPS") and Earnings Per Unit ("EPU") (Details 2)

v3.10.0.1
Earnings Per Share ("EPS") and Earnings Per Unit ("EPU") (Details 2) - shares
shares in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Conversion of common units        
Antidilutive securities        
Antidilutive securities excluded from computation of diluted earnings per share (in shares) 3,197 3,405 3,208 3,425
Conversion of Series I preferred units        
Antidilutive securities        
Antidilutive securities excluded from computation of diluted earnings per share (in shares) 176 176 176 176
Forward Equity Sale Agreement        
Antidilutive securities        
Antidilutive securities excluded from computation of diluted earnings per share (in shares) 6,800   7,100  
Weighted average restricted stock and deferred shares        
Antidilutive securities        
Antidilutive securities excluded from computation of diluted earnings per share (in shares) 458 455 451 424
Weighted average options        
Antidilutive securities        
Antidilutive securities excluded from computation of diluted earnings per share (in shares) 47 61 53 100
Corporate Office Properties, L.P. | Conversion of Series I preferred units        
Antidilutive securities        
Antidilutive securities excluded from computation of diluted earnings per share (in shares) 176 176 176 176
Corporate Office Properties, L.P. | Forward Equity Sale Agreement        
Antidilutive securities        
Antidilutive securities excluded from computation of diluted earnings per share (in shares) 6,800   7,100  
Corporate Office Properties, L.P. | Weighted average restricted stock and deferred shares        
Antidilutive securities        
Antidilutive securities excluded from computation of diluted earnings per share (in shares) 458 455 451 424
Corporate Office Properties, L.P. | Weighted average options        
Antidilutive securities        
Antidilutive securities excluded from computation of diluted earnings per share (in shares) 47 61 53 100