Equity - Noncontrolling Interests (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Class of Stock [Line Items]
Conversion of OP units to common stock	$ 0	$ 0	$ 0	$ 0
4.43937% Cumulative Redeemable Convertible Preferred Units
Class of Stock [Line Items]
Preferred Stock, Dividend Rate, Percentage				4.43937%
4.43937% Cumulative Redeemable Convertible Preferred Units | 4.43937% Cumulative Redeemable Convertible Preferred Units
Class of Stock [Line Items]
Preferred Stock, Dividend Rate, Percentage			4.43937%
Noncontrolling Interests
Class of Stock [Line Items]
Conversion of OP units to common stock	$ (135)	$ (10)	$ (6,740)	$ (328)
Common Stock
Class of Stock [Line Items]
Conversion of OP units to common stock (in shares)	4,967	1,372	268,387	46,339
Conversion of OP units to common stock	$ 0		$ 3	$ 0
Total Stockholders’ Equity
Class of Stock [Line Items]
Conversion of OP units to common stock	$ 135	$ 10	$ 6,740	$ 328
Partnership Interest | Noncontrolling Interests | OP Units
Class of Stock [Line Items]
Operating partnership units outstanding (in shares)	3,039,621		3,039,621
Partnership Interest | Noncontrolling Interests | Vested LTIP Units
Class of Stock [Line Items]
Operating partnership units outstanding (in shares)	863,888		863,888
Operating Partnership | Partnership Interest | Noncontrolling Interests
Class of Stock [Line Items]
Noncontrolling interest percentage ownership in Operating Partnership	3.10%		3.10%