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Shareholders' Equity, Noncontrolling Interests and Other Comprehensive Income - Summary of Change in Noncontrolling Interest (Parenthetical) (Details) - $ / shares | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Minority Interest [Line Items] |  |
Distributions declared (in dollars per share) | $ 0.28 | $ 0.27
Conversion of Common OP Units to Common Shares by limited partners of the Operating Partnership (in shares) | 174,529 | 36,126
Operating Partnership, as General Partner or Managing Member |  |
Minority Interest [Line Items] |  |
Series A Preferred OP Units (in shares) | 3,325,240 | 3,328,873
Operating Partnership, as General Partner or Managing Member | Series A Preferred Stock |  |
Minority Interest [Line Items] |  |
Series A Preferred OP Units (in shares) | 188 | 188
Operating Partnership, as General Partner or Managing Member | Series C Preferred Stock |  |
Minority Interest [Line Items] |  |
Series A Preferred OP Units (in shares) | 136,593 | 136,593
LTIP Units |  |
Minority Interest [Line Items] |  |
LTIP units outstanding (in shares) | 2,726,043 | 2,619,872

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