XML 43 R26.htm IDEA: XBRL DOCUMENT
v3.5.0.2

MAALP Capital (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2016 | Jun. 30, 2015
MAALP Capital [Abstract] |  |
Partners' Capital [Table Text Block] | Total capital and its components for the six-month periods ended June 30, 2016 and 2015 were as follows (dollars in thousands, except per unit data):
| Mid-America Apartments, L.P. Unitholders |  |
| Limited Partner |  | General Partner |  | Accumulated Other Comprehensive Income (Loss) |  | Total Partnership Capital
CAPITAL BALANCE DECEMBER 31, 2015 | $ | 165,726 |  |  | $ | 2,993,696 |  |  | $ | (1,618 | ) |  | $ | 3,157,804 |
Net income | 4,881 |  |  | 88,557 |  |  | — |  |  | 93,438 |
Other comprehensive loss - derivative instruments (cash flow hedges) | — |  |  | — |  |  | (2,702 | ) |  | (2,702 | )
Issuance of OP Units | — |  |  | 186 |  |  | — |  |  | 186 |
OP Units repurchased and retired | — |  |  | (1,742 | ) |  | — |  |  | (1,742 | )
General partner OP Units issued in exchange for limited partner units | (158 | ) |  | 158 |  |  | — |  |  | — |
OP Units issued in exchange for redeemable units | — |  |  | 123 |  |  | — |  |  | 123 |
Redeemable OP Units fair market value adjustment | — |  |  | (1,518 | ) |  | — |  |  | (1,518 | )
Adjustment for limited partners' capital at redemption value | (54 | ) |  | 54 |  |  | — |  |  | — |
Amortization of unearned compensation | — |  |  | 4,383 |  |  | — |  |  | 4,383 |
Distributions ($1.64 per OP Unit) | (6,820 | ) |  | (123,852 | ) |  | — |  |  | (130,672 | )
CAPITAL BALANCE JUNE 30, 2016 | $ | 163,575 |  |  | $ | 2,960,045 |  |  | $ | (4,320 | ) |  | $ | 3,119,300 |
| Mid-America Apartments, L.P. Unitholders |  |
| Limited Partner |  | General Partner |  | Accumulated Other Comprehensive Income (Loss) |  | Total Partnership Capital
CAPITAL BALANCE DECEMBER 31, 2014 | $ | 161,310 |  |  | $ | 2,890,858 |  |  | $ | (376 | ) |  | $ | 3,051,792 |
Net income | 10,984 |  |  | 197,566 |  |  | — |  |  | 208,550 |
Other comprehensive income - derivative instruments (cash flow hedges) | — |  |  | — |  |  | 1,440 |  |  | 1,440 |
Issuance of OP Units | — |  |  | 184 |  |  | — |  |  | 184 |
OP Units repurchased and retired | — |  |  | (945 | ) |  | — |  |  | (945 | )
Exercise of OP Unit options |  |  | 420 |  |  | — |  |  | 420 |
General partner OP Units issued in exchange for limited partner units | (184 | ) |  | 184 |  |  | — |  |  | — |
Redeemable OP Units fair market value adjustment | — |  |  | 173 |  |  | — |  |  | 173 |
Adjustment for limited partners' capital at redemption value | (45 | ) |  | 45 |  |  | — |  |  | — |
Amortization of unearned compensation | — |  |  | 3,167 |  |  | — |  |  | 3,167 |
Distributions ($1.54 per OP Unit) | (6,449 | ) |  | (116,066 | ) |  | — |  |  | (122,515 | )
CAPITAL BALANCE JUNE 30, 2015 | $ | 165,616 |  |  | $ | 2,975,586 |  |  | $ | 1,064 |  |  | $ | 3,142,266 |

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

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