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Equity
 6 Months Ended
Jun. 30, 2012
Notes To Financial Statements [Abstract]  
Equity
Equity

Total equity and its components for the six month periods ended June 30, 2012, and 2011, were as follows (dollars in thousands, except per share and per unit data):
  
Mid-America Apartment Communities, Inc. Shareholders
 
 
 
 
 
Common
Stock
Amount
 
Additional
Paid-In
Capital
 
Accumulated
Distributions
in Excess of
Net Income
 
Accumulated
Other
Comprehensive
Income (Loss)
 
Noncontrolling
Interest
 
Total
Equity
EQUITY BALANCE DECEMBER 31, 2011
$
389

 
$
1,375,623

 
$
(621,833
)
 
$
(35,848
)
 
$
25,131

 
$
743,462

Net income
 
 
 
 
52,050

 
 
 
2,490

 
54,540

Other comprehensive income - derivative instruments (cash flow hedges)
 
 
 
 
 
 
4,957

 
242

 
5,199

Issuance and registration of common shares
20

 
120,130

 
 
 
 
 
 
 
120,150

Shares repurchased and retired
—

 
(1,640
)
 
 
 
 
 
 
 
(1,640
)
Shares issued in exchange for units
1

 
2,515

 
 
 
 
 
(2,516
)
 
—

Redeemable stock fair market value
 
 
 
 
(375
)
 
 
 
 
 
(375
)
Adjustment for noncontrolling interest ownership in operating partnership
 
 
(3,687
)
 
 
 
 
 
3,687

 
—

Amortization of unearned compensation
 
 
1,231

 
 
 
 
 
 
 
1,231

Dividends on common stock ($0.6600 per share)
 
 
 
 
(54,146
)
 
 
 


 
(54,146
)
Dividends on noncontrolling interest units ($0.6600 per unit)
 
 
 
 
 
 
 
 
(2,458
)
 
(2,458
)
EQUITY BALANCE JUNE 30, 2012
$
410

 
$
1,494,172

 
$
(624,304
)
 
$
(30,891
)
 
$
26,576

 
$
865,963




  
Mid-America Apartment Communities, Inc. Shareholders
 
 
 
 
 
Common
Stock
Amount
 
Additional
Paid-In
Capital
 
Accumulated
Distributions
in Excess of
Net Income
 
Accumulated
Other
Comprehensive
Income (Loss)
 
Noncontrolling
Interest
 
Total
Equity
EQUITY BALANCE DECEMBER 31, 2010
$
348

 
$
1,142,023

 
$
(575,021
)
 
$
(48,847
)
 
$
22,125

 
$
540,628

Net income


 


 
16,272

 


 
563

 
16,835

Other comprehensive income - derivative instruments (cash flow hedges)


 


 


 
6,579

 
230

 
6,809

Issuance and registration of common shares
21

 
125,679

 


 


 


 
125,700

Shares repurchased and retired
—

 
(2,260
)
 


 


 


 
(2,260
)
Exercise of stock options
—

 
38

 


 


 


 
38

Shares issued in exchange for units
2

 
2,876

 


 


 
(2,878
)
 
—

Redeemable stock fair market value


 


 
(235
)
 


 


 
(235
)
Adjustment for noncontrolling interest ownership in operating partnership


 
(5,189
)
 


 


 
5,189

 
—

Amortization of unearned compensation


 
1,686

 


 


 


 
1,686

Dividends on common stock ($0.6275 per share)


 


 
(46,332
)
 


 


 
(46,332
)
Dividends on noncontrolling interest units ($0.6275 per unit)


 


 


 


 
(2,569
)
 
(2,569
)
EQUITY BALANCE JUNE 30, 2011
$
371

 
$
1,264,853

 
$
(605,316
)
 
$
(42,268
)
 
$
22,660

 
$
640,300