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Earnings Per Common Share of MAA (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Earnings Per Share Disclosure [Line Items] |  |  |
Dividends, Preferred Stock, Cash |  |  | $ 0
Parent Company [Member] |  |  |
Earnings Per Share Disclosure [Line Items] |  |  |
Weighted average common shares - basic |  | 113,338 | 75,249
Weighted average partnership units outstanding | [1] | 4,219 | 0
Effect of dilutive securities | [2] | 307 | 240
Weighted average common shares - diluted |  | 117,864 | 75,489
Dividends, Preferred Stock, Cash |  | $ 922 |
Calculation of Basic Earnings per Share [Member] | Parent Company [Member] |  |  |
Earnings Per Share Disclosure [Line Items] |  |  |
Income from continuing operations |  | 43,416 | $ 45,808
Income from continuing operations attributable to noncontrolling interests |  | (1,511) | (2,395)
Income from continuing operations allocated to unvested restricted shares |  | (73) | (103)
Dividends, Preferred Stock, Cash |  | (922) | 0
Income from continuing operations available for common shareholders, adjusted |  | $ 40,910 | $ 43,310
Earnings per share - basic |  | $ 0.36 | $ 0.58
Calculation of Diluted Earnings per Share [Member] | Parent Company [Member] |  |  |
Earnings Per Share Disclosure [Line Items] |  |  |
Income from continuing operations |  | $ 43,416 | $ 45,808
Income from continuing operations attributable to noncontrolling interests | [1] | 0 | (2,395)
Dividends, Preferred Stock, Cash |  | (922) | 0
Income from continuing operations available for common shareholders, adjusted |  | $ 42,494 | $ 43,413
Earnings per share - diluted |  | $ 0.36 | $ 0.58
Limited Partnership Units [Member] | Parent Company [Member] |  |  |
Earnings Per Share Disclosure [Line Items] |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount |  | 4,200 |
[1] | (1) For the three months ended March 31, 2016, 4.2 million OP Units and their related income are not included in the diluted earnings per share calculations as they are not dilutive.
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- Definition Adjusted Income (Loss) from Continuing Operations Available for Common Shareholders, Basic + References No definition available. + Details
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- Definition Adjusted Income (Loss) from Continuing Operations Available for Common Shareholders, Diluted + References No definition available. + Details
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- Definition Basic Earnings Per Share + References No definition available. + Details
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- Definition Income from continuing operations allocated to unvested restricted shares + References No definition available. + Details
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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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- Definition Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Weighted average number of general partnership units outstanding determined by relating the portion of time within a reporting period that general partnership units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 + Details
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- Definition The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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