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Earnings Per Common Share of MAA (Details) - Parent Company [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Earnings Per Share Disclosure [Line Items] |  |  |
Weighted average common shares - basic |  | 75,249 | 75,145
Weighted average partnership units outstanding | [1] | 0 | 0
Effect of dilutive securities | [2] | 240 | 0
Weighted average common shares - diluted |  | 75,489 | 75,145
Calculation of Basic Earnings per Share [Member] |  |  |
Earnings Per Share Disclosure [Line Items] |  |  |
Income from continuing operations |  | $ 45,808 | $ 64,677
Income from continuing operations attributable to noncontrolling interests |  | (2,395) | (3,410)
Income from continuing operations allocated to unvested restricted shares |  | (103) | (131)
Income from continuing operations available for common shareholders, adjusted |  | $ 43,310 | $ 61,136
Earnings per share - basic |  | $ 0.58 | $ 0.81
Calculation of Diluted Earnings per Share [Member] |  |  |
Earnings Per Share Disclosure [Line Items] |  |  |
Income from continuing operations |  | $ 45,808 | $ 64,677
Income from continuing operations attributable to noncontrolling interests | [1] | (2,395) | (3,410)
Income from continuing operations allocated to unvested restricted shares | [2] | 0 | (131)
Income from continuing operations available for common shareholders, adjusted |  | $ 43,413 | $ 61,136
Earnings per share - diluted |  | $ 0.58 | $ 0.81
Limited Partnership Units [Member] |  |  |
Earnings Per Share Disclosure [Line Items] |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount |  | 4,200 |
Restricted Stock [Member] |  |  |
Earnings Per Share Disclosure [Line Items] |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount |  |  | 200
[1] | (1) For both the three months ended March 31, 2016 and 2015, 4.2 million operating partnership units and their related income are not included in the diluted earnings per share calculations as they are not dilutive.
[2] | (2) For the three months ended March 31, 2015, 0.2 million potentially dilutive securities and their related income are not included in the diluted earnings per share calculations as they are not dilutive.

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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