Equity - Schedule of Nonvested Restricted Stock Activity (Detail) - shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Shares tendered in accordance with terms of plan to satisfy tax withholding (in shares)	25,797	23,090
Restricted Common Stock
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Balance at January 1, 2020 (in shares)	212,545
Granted (in shares)	104,101
Forfeited (in shares)	(1,826)
Vested (in shares)	(70,565)
Balance at March 31, 2020 (in shares)	244,255
LTIP Units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Balance at January 1, 2020 (in shares)	298,412
Granted (in shares)	36,292
Forfeited (in shares)	0
Vested (in shares)	(41,953)
Balance at March 31, 2020 (in shares)	292,751
Performance Units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Balance at January 1, 2020 (in shares)	687,761
Granted (in shares)	0
Forfeited (in shares)	0
Vested (in shares)	0
Balance at March 31, 2020 (in shares)	687,761