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Earnings from Discontinued Operations (Summary of Discontinued Operations) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Depreciation and Amortization, Discontinued Operations |  |  |  |  |  |  |  |  | $ 2,300 |  |
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |
Expenses |  |  |  |  |  |  |  |  |  |  |
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax | $ 0 | $ 0 | $ 0 | $ 0 | $ 16 | $ (103) | $ 0 | $ 5,481 | 0 | $ 5,394 | $ 76,844
Parent Company [Member] | Discontinued Operations [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Rental Revenues |  |  |  |  |  |  |  |  |  | 75 | 12,499
Other Revenue (Expense) from Real Estate Operations |  |  |  |  |  |  |  |  |  | 10 | 1,189
Total Revenues |  |  |  |  |  |  |  |  |  | 85 | 13,688
Expenses |  |  |  |  |  |  |  |  |  |  |
Property Operating Expenses |  |  |  |  |  |  |  |  |  | 74 | 5,886
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 42 | 2,716
Interest Expense and Other |  |  |  |  |  |  |  |  |  | 32 | 436
Total expense |  |  |  |  |  |  |  |  |  | 148 | 9,038
Discontinued Operation, Income from Discontinued Operation During Phase-out Period, Net of Tax |  |  |  |  |  |  |  |  |  | (63) | 4,650
Disposal Group, Including Discontinued Operation, Other Income |  |  |  |  |  |  |  |  |  | 0 | 93
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax |  |  |  |  |  |  |  |  |  | 5,394 | 76,844
Discontinued Operation, Gain on Disposal of Discontinued Operation, Net of Tax |  |  |  |  |  |  |  |  |  | 5,331 | 81,587
Limited Partner [Member] |  |  |  |  |  |  |  |  |  |  |
Expenses |  |  |  |  |  |  |  |  |  |  |
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax | $ 0 | $ 0 | $ 0 | $ 0 | $ 16 | $ (103) | $ 0 | $ 5,481 | 0 | 5,394 | 65,520
Limited Partner [Member] | Discontinued Operations [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Rental Revenues |  |  |  |  |  |  |  |  |  | 75 | 11,446
Other Revenue (Expense) from Real Estate Operations |  |  |  |  |  |  |  |  |  | 10 | 1,099
Total Revenues |  |  |  |  |  |  |  |  |  | 85 | 12,545
Expenses |  |  |  |  |  |  |  |  |  |  |
Property Operating Expenses |  |  |  |  |  |  |  |  |  | 74 | 5,390
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 42 | 2,480
Interest Expense and Other |  |  |  |  |  |  |  |  |  | 32 | 436
Total expense |  |  |  |  |  |  |  |  |  | 148 | 8,306
Discontinued Operation, Income from Discontinued Operation During Phase-out Period, Net of Tax |  |  |  |  |  |  |  |  |  | (63) | 4,239
Disposal Group, Including Discontinued Operation, Other Income |  |  |  |  |  |  |  |  |  | 0 | 93
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax |  |  |  |  |  |  |  |  |  | 5,394 | 65,520
Discontinued Operation, Gain on Disposal of Discontinued Operation, Net of Tax |  |  |  |  |  |  |  |  |  | 5,331 | 69,852
Continuing Operations [Member] | Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations attributable to MAA |  |  |  |  |  |  |  |  | 332,287 | 142,933 | 36,539
Income from continuing operations attributable to noncontrolling interests |  |  |  |  |  |  |  |  | 18,458 | 8,013 | 1,153
Income from Continuing Operations, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | 350,745 | 150,946 | 37,692
Discontinued Operations [Member] | Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Income from Discontinued Operations, Net of Tax, Attributable to Parent |  |  |  |  |  |  |  |  | 0 | 5,047 | 78,742
Income from Discontinued Operations, Net of Tax, Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | 0 | 284 | 2,845
Income from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | 0 | 5,331 | $ 81,587
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Prior Period Reclassification Adjustment |  |  |  |  |  |  |  |  | $ 34,100 | $ 36,500 |

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