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MAALP Capital (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Dec. 31, 2016
General Partners' Capital Account [Member] |  |  |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |  |
Units Issued During Period, Value, Unit Options Exercised |  |  | $ 218 |  |
Total Partnership Capital [Member] |  |  |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |  |
Units Issued During Period, Value, Unit Options Exercised |  |  | 218 |  |
Limited Partner [Member] |  |  |  |  |
Capital Disclosure [Line Items] |  |  |  |  |
Noncontrolling Interest in Joint Ventures | $ 2,306 |  | $ 2,306 |  | $ 2,306
Distribution Made to Limited Partner, Distributions Declared, Per Unit | $ 0.87 | $ 0.82 | $ 2.61 | $ 2.46 |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |  |
Dividends, Preferred Stock, Cash |  |  | $ 2,766 | $ 0 |
Limited Partner [Member] | General Partners' Capital Account [Member] |  |  |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |  |
Beginning Balance |  |  | 6,337,721 | 2,993,696 | 2,993,696
Net Income Allocated to General Partners |  |  | 202,163 | 172,836 |
Issuance of units |  |  | 154 | (738) |
Units repurchased and retired |  |  | (4,782) | (1,811) |
General partner units issued in exchange for limited partner units |  |  | 1,133 | 780 |
Units issued in exchange for redeemable units |  |  | 1,482 | 122 |
Redeemable stock fair market value |  |  | (870) | (296) |
Adjustment for noncontrolling interest ownership in operating partnership |  |  | 68 | (13) |
Amortization of unearned compensation |  |  | 8,438 | 6,625 |
Distributions |  |  | (296,535) | (185,789) |
Ending Balance | $ 6,249,190 | $ 2,985,412 | 6,249,190 | 2,985,412 | 6,337,721
Limited Partner [Member] | Total Partnership Capital [Member] |  |  |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |  |
Beginning Balance |  |  | 6,642,082 | 3,157,804 | 3,157,804
Net Income Available for Common Unitholders |  |  | 212,529 | 182,344 |
Other comprehensive (loss) income - derivatives insturments (cash flow hedges) |  |  | (368) | (481) |
Issuance of units |  |  | 2,161 | (738) |
Units repurchased and retired |  |  | (4,782) | (1,811) |
General partner units issued in exchange for limited partner units |  |  | 0 | 0 |
Units issued in exchange for redeemable units |  |  | 1,482 | 122 |
Redeemable stock fair market value |  |  | (870) | (296) |
Adjustment for noncontrolling interest ownership in operating partnership |  |  | 0 | 0 |
Amortization of unearned compensation |  |  | 8,438 | 6,625 |
Distributions |  |  | (307,517) | (196,006) |
Dividends, Preferred Stock, Cash |  |  | 2,766 |  |
Ending Balance | 6,550,607 | 3,147,563 | 6,550,607 | 3,147,563 | 6,642,082
Limited Partner [Member] | Limited Partner [Member] |  |  |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |  |
Beginning Balance |  |  | 235,976 | 165,726 | 165,726
Net Income Allocated to Limited Partners |  |  | 7,600 | 9,508 |
General partner units issued in exchange for limited partner units |  |  | (1,133) | (780) |
Adjustment for noncontrolling interest ownership in operating partnership |  |  | (68) | 13 |
Distributions |  |  | (10,982) | (10,217) |
Ending Balance | 231,393 | 164,250 | 231,393 | 164,250 | 235,976
Limited Partner [Member] | AOCI Attributable to Noncontrolling Interest [Member] |  |  |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |  |
Beginning Balance |  |  | 1,246 | (1,618) | (1,618)
Other comprehensive (loss) income - derivatives insturments (cash flow hedges) |  |  | (368) | (481) |
Ending Balance | 878 | $ (2,099) | 878 | (2,099) | 1,246
Accumulated Distributions in Excess of Net Income [Member] |  |  |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |  |
Redeemable stock fair market value |  |  |  | $ (296) |
Accumulated Distributions in Excess of Net Income [Member] | Limited Partner [Member] |  |  |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |  |
Issuance of units |  |  | 2,007 |  | $ 64,833
Dividends, Preferred Stock, Cash |  |  | 2,766 |  |
Preferred Stock Including Additional Paid in Capital [Member] | Limited Partner [Member] |  |  |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |  |
Ending Balance | $ 66,840 |  | $ 66,840 |  |

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