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Earnings Per Common Share
12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Earnings Per Common Share Earnings Per Common Share
The following table sets forth the computation of basic and diluted earnings per share (amounts in thousands except per share amounts):
 Year Ended December 31,
 201920182017
Numerator for earnings per common share - basic:
Net income$492,866  $272,908  $29,666  
Net income attributable to noncontrolling interest(186) (95) (10) 
Preferred distributions(7,988) (7,988) (7,988) 
Numerator for net income per share - basic$484,692  $264,825  $21,668  
Numerator for earnings per common share - diluted:
Net income$492,866  $272,908  $29,666  
Net income attributable to noncontrolling interest(186) (95) —  
Preferred distributions—  (7,988) (7,988) 
Numerator for net income per share - diluted$492,680  $264,825  $21,678  
Denominator for earnings per common share - basic and diluted:
Weighted average number of common shares outstanding - basic(1)
122,091  122,314  124,125  
RSUs(2)
1,138  956  912  
LTIP Units(3)
174  115  92  
Series D preferred shares; 6.50% cumulative convertible(4)
2,857  —  —  
Weighted average number of common shares outstanding - diluted126,260  123,385  125,129  
Net income per common share attributable to Equity Commonwealth common shareholders:
Basic
$3.97  $2.17  $0.17  
Diluted
$3.90  $2.15  $0.17  
Anti-dilutive securities:
Effect of Series D preferred shares; 6.50% cumulative convertible(4)
—  2,563  2,363  
Effect of LTIP Units
33  43  —  
Effect of OP Units(5)
14   —  

(1) The years ended December 31, 2019, 2018 and 2017, include 210, 308, and 33 weighted-average, unvested, earned RSUs, respectively.
(2) Represents weighted-average number of common shares that would have been issued if the year-end was the measurement date for unvested, unearned RSUs.
(3) Represents the weighted-average dilutive shares issuable from LTIP Units if the year-end was the measurement date for the periods shown.
(4) The Series D preferred shares are excluded from the diluted earnings per share calculation for the years ended December 31, 2018 and 2017 because including the Series D preferred shares would also require that the preferred distributions be added back to net income, resulting in anti-dilution.
(5) Beneficial interests in the Operating Trust.