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Earnings Per Common Share of MAA (Details) - Parent Company [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Earnings Per Share Disclosure |  |  |  |
Weighted average common shares, basic |  | 75,176 | 74,982 | 50,677
Weighted Average General Partnership Units Outstanding |  | 0 | 0 | 2,351
Weighted Average Number Diluted Shares Outstanding Adjustment |  | 0 | 0 | 88
Weighted average common shares - diluted |  | 75,176 | 74,982 | 53,116
Calculation of Basic Earnings per Share [Member] |  |  |  |
Earnings Per Share Disclosure |  |  |  |
Income from Continuing Operations, Including Portion Attributable to Noncontrolling Interest |  | $ 350,745 | $ 150,946 | $ 37,692
Income from Continuing Operations Attributable to Noncontrolling Interest |  | (18,458) | (8,013) | (1,154)
Income from continuing operations allocated to unvested restricted shares |  | (772) | (278) | (34)
Income from continuing operations available for common shareholders, adjusted |  | 331,515 | 142,655 | 36,504
Income from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest |  | 0 | 5,331 | 81,587
Income from Discontinued Operations, Net of Tax, Attributable to Noncontrolling Interest |  | 0 | (284) | (2,845)
Income from discontinued operations allocated to unvested restricted shares |  | 0 | (10) | (73)
Income from discontinued operations available for common shareholders, adjusted |  | $ 0 | $ 5,037 | $ 78,669
Basic Earnings Per Share |  | $ 4.41 | $ 1.97 | $ 2.27
Calculation of Diluted Earnings per Share [Member] |  |  |  |
Earnings Per Share Disclosure |  |  |  |
Income from Continuing Operations, Including Portion Attributable to Noncontrolling Interest |  | $ 350,745 | $ 150,946 | $ 37,692
Income from Continuing Operations Attributable to Noncontrolling Interest |  | (18,458) | (8,013) | 0
Income from continuing operations allocated to unvested restricted shares |  | (772) | (278) | 0
Income from continuing operations available for common shareholders, adjusted |  | 331,515 | 142,655 | 37,692
Income from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest |  | 0 | 5,331 | 81,587
Income from Discontinued Operations, Net of Tax, Attributable to Noncontrolling Interest |  | 0 | (284) | 0
Income from discontinued operations allocated to unvested restricted shares |  | 0 | (10) | 0
Income from discontinued operations available for common shareholders, adjusted |  | $ 0 | $ 5,037 | $ 81,587
Diluted Earnings Per Share |  | $ 4.41 | $ 1.97 | $ 2.25
Limited Partnership Units [Member] |  |  |  |
Earnings Per Share Disclosure |  |  |  |
Effect of dilutive securities (shares) | [1] | 4,200 |  |
Restricted Stock [Member] |  |  |  |
Earnings Per Share Disclosure |  |  |  |
Effect of dilutive securities (shares) | [2] | 100 |  |
[1] | 4.2 million OP units and their related income are not included in the diluted earnings per share calculations as they are not dilutive.
[2] | 0.1 million potentially dilutive securities and their related income are not included in the diluted earnings per share calculation as they are not dilutive.

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