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Net Income (Loss) Per Common Share (Tables)
3 Months Ended
Mar. 31, 2018
Earnings Per Share [Abstract]  
Reconciling the Components of Basic and Diluted Net Income (Loss) per Common Share The following table reconciles the components of basic and diluted net income per common share or Common Unit (in thousands): 
 
Three Months Ended March 31,
 
2018
 
2017
General Partner
 
 
 
Net income attributable to common shareholders
$
72,963

 
$
70,200

Less: dividends on participating securities
(437
)
 
(542
)
Basic net income attributable to common shareholders
72,526

 
69,658

Add back dividends on dilutive participating securities

 
305

Noncontrolling interest in earnings of common unitholders
683

 
652

Diluted net income attributable to common shareholders
$
73,209

 
$
70,615

Weighted average number of common shares outstanding
356,740

 
355,282

Weighted average Limited Partner Units outstanding
3,355

 
3,316

Other potential dilutive shares
305

 
2,102

Weighted average number of common shares and potential dilutive securities
360,400

 
360,700

 
 
 
 
Partnership
 
 
 
Net income attributable to common unitholders
$
73,646

 
$
70,852

Less: distributions on participating securities
(437
)
 
(542
)
Basic net income attributable to common unitholders
$
73,209

 
$
70,310

Add back distributions on dilutive participating securities

 
305

Diluted net income attributable to common unitholders
$
73,209

 
$
70,615

Weighted average number of Common Units outstanding
360,095

 
358,598

Other potential dilutive units
305

 
2,102

Weighted average number of Common Units and potential dilutive securities
360,400

 
360,700

Computation of Anti-Dilutive Common Share The following table summarizes the data that is excluded from the computation of net income per common share or Common Unit as a result of being anti-dilutive (in thousands): 
 
Three Months Ended March 31,
 
2018
 
2017
General Partner and Partnership
 
 
 
Other potential dilutive shares or units:
 
 
 
Anti-dilutive outstanding potential shares or units under fixed stock option and other stock-based compensation plans

 

Anti-dilutive outstanding participating securities
2,272

 
1,389