XML 45 R28.htm IDEA: XBRL DOCUMENT
v3.7.0.1

MAA Equity (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2017
MAA Equity [Abstract] |
Shareholders' Equity [Table Text Block] |
|  | Mid-America Apartment Communities, Inc. Shareholders' Equity |  |  |  |  |  |
|  | Preferred Stock Amount |  | Common Stock Amount |  | Additional Paid-In Capital |  | Accumulated Distributions in Excess of Net Income |  | Accumulated Other Comprehensive Income (Loss) |  | Noncontrolling Interest Operating Partnership |  | Noncontrolling Interest - Consolidated Real Estate Entity |  | Total Equity
EQUITY BALANCE DECEMBER 31, 2015 |  | $ | — |  |  | $ | 753 |  |  | $ | 3,627,074 |  |  | $ | (634,141 | ) |  | $ | (1,589 | ) |  | $ | 165,726 |  |  | $ | — |  |  | $ | 3,157,823 |
Net income attributable to controlling interest |  | — |  |  | — |  |  | — |  |  | 88,557 |  |  | — |  |  | 4,881 |  |  | — |  |  | 93,438 |
Other comprehensive loss - derivative instruments (cash flow hedges) |  | — |  |  | — |  |  | — |  |  | — |  |  | (2,561 | ) |  | (141 | ) |  | — |  |  | (2,702 | )
Issuance and registration of common shares |  | — |  |  | 1 |  |  | 185 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 186 |
Shares repurchased and retired |  | — |  |  | — |  |  | (1,742 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | (1,742 | )
Shares issued in exchange for common units |  | — |  |  | — |  |  | 158 |  |  | — |  |  | — |  |  | (158 | ) |  | — |  |  | — |
Shares issued in exchange for redeemable stock |  | — |  |  | — |  |  | 123 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 123 |
Redeemable stock fair market value adjustment |  | — |  |  | — |  |  | — |  |  | (1,518 | ) |  | — |  |  | — |  |  | — |  |  | (1,518 | )
Adjustment for noncontrolling interest ownership in operating partnership |  | — |  |  | — |  |  | (87 | ) |  | — |  |  | — |  |  | 87 |  |  | — |  |  | — |
Amortization of unearned compensation |  | — |  |  | — |  |  | 4,383 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 4,383 |
Dividends on common stock ($1.64 per share) |  | — |  |  | — |  |  | — |  |  | (123,852 | ) |  | — |  |  | — |  |  | — |  |  | (123,852 | )
Dividends on noncontrolling interest units ($1.64 per unit) |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (6,820 | ) |  | — |  |  | (6,820 | )
EQUITY BALANCE JUNE 30, 2016 |  | $ | — |  |  | $ | 754 |  |  | $ | 3,630,094 |  |  | $ | (670,954 | ) |  | $ | (4,150 | ) |  | $ | 163,575 |  |  | $ | — |  |  | $ | 3,119,319 |
Changes in total equity and its components for the six-month periods ended June 30, 2017 and 2016 were as follows (dollars in thousands, except per share and per unit data):
| Mid-America Apartment Communities, Inc. Shareholders' Equity |  |  |  |  |  |
| Preferred Stock Amount |  | Common Stock Amount |  | Additional Paid-In Capital |  | Accumulated Distributions in Excess of Net Income |  | Accumulated Other Comprehensive Income (Loss) |  | Noncontrolling Interest Operating Partnership |  | Noncontrolling Interest - Consolidated Real Estate Entity |  | Total Equity
EQUITY BALANCE DECEMBER 31, 2016 | $ | 9 |  |  | $ | 1,133 |  |  | $ | 7,109,012 |  |  | $ | (707,479 | ) |  | $ | 1,144 |  |  | $ | 235,976 |  |  | $ | 2,306 |  |  | $ | 6,642,101 |
Net income attributable to controlling interest | — |  |  | — |  |  | — |  |  | 90,220 |  |  | — |  |  | 3,351 |  |  | — |  |  | 93,571 |
Other comprehensive income - derivative instruments (cash flow hedges) | — |  |  | — |  |  | — |  |  | — |  |  | (409 | ) |  | (16 | ) |  | — |  |  | (425 | )
Issuance and registration of common shares | — |  |  | 1 |  |  | 15 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 16 |
Issuance and registration of preferred shares | — |  |  | — |  |  | 2,007 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 2,007 |
Shares repurchased and retired | — |  |  | — |  |  | (4,782 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | (4,782 | )
Exercise of stock options | — |  |  | — |  |  | 218 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 218 |
Shares issued in exchange for common units | — |  |  | — |  |  | 265 |  |  | — |  |  | — |  |  | (265 | ) |  | — |  |  | — |
Shares issued in exchange for redeemable stock | — |  |  | — |  |  | 1,482 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 1,482 |
Redeemable stock fair market value adjustment | — |  |  | — |  |  | — |  |  | (719 | ) |  | — |  |  | — |  |  | — |  |  | (719 | )
Adjustment for noncontrolling interest ownership in operating partnership | — |  |  | — |  |  | 123 |  |  | — |  |  | — |  |  | (123 | ) |  | — |  |  | — |
Amortization of unearned compensation | — |  |  | — |  |  | 5,739 |  |  | (114 | ) |  | — |  |  | — |  |  | — |  |  | 5,625 |
Dividends on preferred stock | — |  |  | — |  |  | — |  |  | (1,844 | ) |  | — |  |  | — |  |  | — |  |  | (1,844 | )
Dividends on common stock ($1.74 per share) | — |  |  | — |  |  | — |  |  | (197,680 | ) |  | — |  |  | — |  |  | — |  |  | (197,680 | )
Dividends on noncontrolling interest units ($1.74 per unit) | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (7,328 | ) |  | — |  |  | (7,328 | )
EQUITY BALANCE JUNE 30, 2017 | $ | 9 |  |  | $ | 1,134 |  |  | $ | 7,114,079 |  |  | $ | (817,616 | ) |  | $ | 735 |  |  | $ | 231,595 |  |  | $ | 2,306 |  |  | $ | 6,532,242 |

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

X
- Definition Shareholders' Equity [Table Text Block] + References No definition available. + Details
Name: | maa_ShareholdersEquityTableTextBlock
Namespace Prefix: | maa_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration