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Earnings Per Common Share of MAA (Tables)
 3 Months Ended
Mar. 31, 2019
Earnings Per Common Share of MAA [Abstract]  
Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block]
For the three months ended March 31, 2019 and 2018, MAA's diluted earnings per share was computed using the treasury stock method and the two-class method, respectively, as presented below (dollars and shares in thousands, except per share amounts):
 
Three months ended March 31,
 
2019
 
2018
Calculation of Earnings per Common Share - basic
 
 
 
Net income
$
65,958

 
$
50,820

Net income attributable to noncontrolling interests
(2,298
)
 
(1,801
)
Unvested restricted stock (allocation of earnings)
(87
)
 
(79
)
Preferred dividends
(922
)
 
(922
)
Net income available for common shareholders, adjusted
$
62,651

 
$
48,018

 
 
 
 
Weighted average common shares - basic
113,726

 
113,507

Earnings per common share - basic
$
0.55

 
$
0.42

 
 
 
 
Calculation of Earnings per Common Share - diluted
 
 
 
Net income
$
65,958

 
$
50,820

Net income attributable to noncontrolling interests (1)
(2,298
)
 
(1,801
)
Unvested restricted stock (allocation of earnings) (2)
—

 
(79
)
Preferred dividends
(922
)
 
(922
)
Net income available for common shareholders, adjusted
$
62,738

 
$
48,018

 
 
 
 
Weighted average common shares - basic
113,726

 
113,507

Effect of dilutive securities (2)
207

 
—

Weighted average common shares - diluted
113,933

 
113,507

Earnings per common share - diluted
$
0.55

 
$
0.42


(1) For the three months ended March 31, 2019 and March 31, 2018, 4.1 million OP Units and 4.2 million OP Units, respectively, and their related income are not included in the diluted earnings per share calculations as they are not dilutive.
(2) For the three months ended March 31, 2018, 0.2 million potentially dilutive securities and their related income are not included in the diluted earnings per share calculation as they are not dilutive.