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Partners' Capital of MAALP - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Schedule Of Capital Structure [Line Items] |  |  |
Operating partnership units outstanding | 118,541,005 | 118,428,070 |
General Partners' Capital Account, Units Outstanding | 115,138,323 | 114,369,812 |
Limited Partners' Capital Account, Units Outstanding | 3,402,682 | 4,058,258 |
Preferred Stock, Shares Outstanding | 867,846 |  | 867,846
Redeemable Preferred Stock [Member] |  |  |
Schedule Of Capital Structure [Line Items] |  |  |
Preferred Stock, Shares Outstanding | 867,846 |  |
Noncontrolling Interest [Member] |  |  |
Schedule Of Capital Structure [Line Items] |  |  |
Common Shares Issuable Upon Conversion Of Convertible Stock | 3,402,682 | 4,058,258 |
Limited Partners' Capital Account | $ 635.5 | $ 470.6 |
Redeemable Capital Shares Par Or Stated Value Per Share | $ 186.75 | $ 115.95 |
M A A L P |  |  |
Schedule Of Capital Structure [Line Items] |  |  |
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest | 97.10% | 96.60% |

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