XML 28 R11.htm IDEA: XBRL DOCUMENT
v3.5.0.2

MAA Equity | 9 Months Ended
--- | ---
Sep. 30, 2016
MAA Equity [Abstract] |
Consolidated Statements of Equity [Text Block] | MAA Equity Changes in total equity and its components for the nine-month periods ended September 30, 2016 and 2015 were as follows (dollars in thousands, except per share and per unit data):
| Mid-America Apartment Communities, Inc. Shareholders' Equity |  |  |  |
| Common Stock Amount |  | Additional Paid-In Capital |  | Accumulated Distributions in Excess of Net Income |  | Accumulated Other Comprehensive Income (Loss) |  | Noncontrolling Interests |  | Total Equity
EQUITY BALANCE DECEMBER 31, 2015 | $ | 753 |  |  | $ | 3,627,074 |  |  | $ | (634,141 | ) |  | $ | (1,589 | ) |  | $ | 165,726 |  |  | $ | 3,157,823 |
Net income | — |  |  | — |  |  | 172,836 |  |  | — |  |  | 9,508 |  |  | 182,344 |
Other comprehensive loss - derivative instruments (cash flow hedges) | — |  |  | — |  |  | — |  |  | (456 | ) |  | (25 | ) |  | (481 | )
Issuance and registration of common shares | 1 |  |  | (739 | ) |  | — |  |  | — |  |  | — |  |  | (738 | )
Shares repurchased and retired | — |  |  | (1,811 | ) |  | — |  |  | — |  |  | — |  |  | (1,811 | )
Shares issued in exchange for OP Units | — |  |  | 780 |  |  | — |  |  | — |  |  | (780 | ) |  | — |
Shares issued in exchange from redeemable stock | — |  |  | 122 |  |  | — |  |  | — |  |  | — |  |  | 122 |
Redeemable stock fair market value adjustment | — |  |  | — |  |  | (296 | ) |  | — |  |  | — |  |  | (296 | )
Adjustment for noncontrolling interest ownership in operating partnership | — |  |  | (38 | ) |  | — |  |  | — |  |  | 38 |  |  | — |
Amortization of unearned compensation | — |  |  | 6,625 |  |  | — |  |  | — |  |  | — |  |  | 6,625 |
Dividends on common stock ($2.46 per share) | — |  |  | — |  |  | (185,789 | ) |  | — |  |  | — |  |  | (185,789 | )
Dividends on noncontrolling interest OP Units ($2.46 per OP Unit) | — |  |  | — |  |  | — |  |  | — |  |  | (10,217 | ) |  | (10,217 | )
EQUITY BALANCE SEPTEMBER 30, 2016 | $ | 754 |  |  | $ | 3,632,013 |  |  | $ | (647,390 | ) |  | $ | (2,045 | ) |  | $ | 164,250 |  |  | $ | 3,147,582 |
| Mid-America Apartment Communities, Inc. Shareholders' Equity |  |  |  |
| Common Stock Amount |  | Additional Paid-In Capital |  | Accumulated Distributions in Excess of Net Income |  | Accumulated Other Comprehensive Income (Loss) |  | Noncontrolling Interests |  | Total Equity
EQUITY BALANCE DECEMBER 31, 2014 | $ | 752 |  |  | $ | 3,619,270 |  |  | $ | (729,086 | ) |  | $ | (412 | ) |  | $ | 161,287 |  |  | $ | 3,051,811 |
Net income | — |  |  | — |  |  | 289,300 |  |  | — |  |  | 16,078 |  |  | 305,378 |
Other comprehensive loss - derivative instruments (cash flow hedges) | — |  |  | — |  |  | — |  |  | (5,894 | ) |  | (328 | ) |  | (6,222 | )
Issuance and registration of common shares | 2 |  |  | 324 |  |  | — |  |  | — |  |  | — |  |  | 326 |
Shares repurchased and retired | — |  |  | (957 | ) |  | — |  |  | — |  |  | — |  |  | (957 | )
Exercise of stock options | — |  |  | 420 |  |  |  |  |  | — |  |  | — |  |  | 420 |
Shares issued in exchange for OP Units | — |  |  | 236 |  |  | — |  |  | — |  |  | (236 | ) |  | — |
Redeemable stock fair market value adjustment | — |  |  | — |  |  | (614 | ) |  | — |  |  | — |  |  | (614 | )
Adjustment for noncontrolling interest ownership in operating partnership | — |  |  | (409 | ) |  | — |  |  | — |  |  | 409 |  |  | — |
Amortization of unearned compensation | — |  |  | 4,950 |  |  | — |  |  | — |  |  | — |  |  | 4,950 |
Dividends on common stock ($2.31 per share) | — |  |  | — |  |  | (174,100 | ) |  | — |  |  | — |  |  | (174,100 | )
Dividends on noncontrolling interest OP Units ($2.31 per OP Unit) | — |  |  | — |  |  | — |  |  | — |  |  | (9,671 | ) |  | (9,671 | )
EQUITY BALANCE SEPTEMBER 30, 2015 | $ | 754 |  |  | $ | 3,623,834 |  |  | $ | (614,500 | ) |  | $ | (6,306 | ) |  | $ | 167,539 |  |  | $ | 3,171,321 |

X
- Definition Consolidated Statements of Equity [Text Block] + References No definition available. + Details
Name: | maa_ConsolidatedStatementsofEquityTextBlock
Namespace Prefix: | maa_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition MAA Equity [Abstract] + References No definition available. + Details
Name: | maa_MAAEquityAbstract
Namespace Prefix: | maa_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration