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