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Consolidated Statements of Operations - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Property operating expenses: |  |  |
Business Combination, Merger and Integration Related Expenses |  | $ 40,800,000 |
Preferred Stock Dividends, Income Statement Impact |  |  | $ 0
Parent Company [Member] |  |  |
Operating revenues: |  |  |
Total operating revenues | $ 1,528,987,000 | 1,125,348,000 | 1,042,779,000
Property operating expenses: |  |  |
Operating Expenses | 364,190,000 | 280,572,000 | 271,027,000
Real estate taxes and insurance | 212,541,000 | 142,784,000 | 129,618,000
Depreciation and amortization | 493,708,000 | 322,958,000 | 294,520,000
Total property operating expenses | 1,070,439,000 | 746,314,000 | 695,165,000
Property management expenses | 43,588,000 | 34,093,000 | 30,990,000
Business Combination, Merger and Integration Related Expenses | 19,990,000 | 40,823,000 | 0
General and administrative expenses | 40,194,000 | 29,040,000 | 25,716,000
Income from continuing operations before non-operating items | 354,776,000 | 275,078,000 | 290,908,000
Interest expense | (154,751,000) | (129,947,000) | (122,344,000)
Gain on sale of non-depreciable real estate assets | 21,000 | 2,171,000 | 172,000
Other Nonoperating Income (Expense) | 14,353,000 | (1,839,000) | (6,274,000)
Gain on sale of depreciable real estate assets excluded from discontinued operations | 127,386,000 | 80,397,000 | 189,958,000
Income before income tax expense | 341,785,000 | 225,860,000 | 352,420,000
Income tax expense | (2,619,000) | (1,699,000) | (1,673,000)
Income from continuing operations before joint venture activity | 339,166,000 | 224,161,000 | 350,747,000
Gain (loss) from real estate joint ventures | 1,370,000 | 241,000 | (2,000)
Consolidated net income | 340,536,000 | 224,402,000 | 350,745,000
Net income attributable to noncontrolling interests | 12,157,000 | 12,180,000 | 18,458,000
Net Income (Loss) Available to Shareholders | 328,379,000 | 212,222,000 | 332,287,000
Preferred Stock Dividends, Income Statement Impact | 3,688,000 | 307,000 |
Net income available for MAA common shareholders | $ 324,691,000 | $ 211,915,000 | $ 332,287,000
Earnings per share - diluted: |  |  |
Common Stock, Dividends, Per Share, Declared | $ 3.5325 | $ 3.33 | $ 3.13
Limited Partner [Member] |  |  |
Operating revenues: |  |  |
Total operating revenues | $ 1,528,987,000 | $ 1,125,348,000 | $ 1,042,779,000
Property operating expenses: |  |  |
Operating Expenses | 364,190,000 | 280,572,000 | 271,027,000
Real estate taxes and insurance | 212,541,000 | 142,784,000 | 129,618,000
Depreciation and amortization | 493,708,000 | 322,958,000 | 294,520,000
Total property operating expenses | 1,070,439,000 | 746,314,000 | 695,165,000
Property management expenses | 43,588,000 | 34,093,000 | 30,990,000
Business Combination, Merger and Integration Related Expenses | 19,990,000 | 40,823,000 | 0
General and administrative expenses | 40,194,000 | 29,040,000 | 25,716,000
Income from continuing operations before non-operating items | 354,776,000 | 275,078,000 | 290,908,000
Interest expense | (154,751,000) | (129,947,000) | (122,344,000)
Gain on sale of non-depreciable real estate assets | 21,000 | 2,171,000 | 172,000
Other Nonoperating Income (Expense) | 14,353,000 | (1,839,000) | (6,274,000)
Gain on sale of depreciable real estate assets excluded from discontinued operations | 127,386,000 | 80,397,000 | 189,958,000
Income before income tax expense | 341,785,000 | 225,860,000 | 352,420,000
Income tax expense | (2,619,000) | (1,699,000) | (1,673,000)
Income from continuing operations before joint venture activity | 339,166,000 | 224,161,000 | 350,747,000
Gain (loss) from real estate joint ventures | 1,370,000 | 241,000 | (2,000)
Consolidated net income | 340,536,000 | 224,402,000 | 350,745,000
Preferred Stock Dividends, Income Statement Impact | 3,688,000 | 307,000 | 0
Net income available for Mid-America Apartments, L.P. common unitholders | $ 336,848,000 | $ 224,095,000 | $ 350,745,000
Earnings Per Share, Basic [Abstract] |  |  |
Basic Earnings Per Unit | $ 2.86 | $ 2.70 | $ 4.41
Earnings per share - diluted: |  |  |
Net income available to common shareholders (dollars per share) | 2.86 | 2.70 | 4.41
Distribution Made to Limited Partner, Distributions Declared, Per Unit | $ 3.5325 | $ 3.33 | $ 3.13

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