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Shareholders' Equity, Noncontrolling Interests and Other Comprehensive Loss - Common Shares and Units - Additional Information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Restricted shares |  |
Class of Stock [Line Items] |  |
Restricted stock, shares canceled for tax withholding for share based compensation (in shares) | 2,075 | 2,468
LTIP Units and Restricted Stock |  |
Class of Stock [Line Items] |  |
Unit based compensation expense | $ 8.4 | $ 8.8

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