Revenue Recognition - Schedule of Fee and Other Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	$ 11,945	$ 14,394	$ 42,928	$ 28,437
Other property income:
Other	1,635	1,769	5,836	5,442
Total fee and other income	13,580	16,163	48,764	33,879
Asset and Property Management Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	9,751	10,501	32,392	20,982
Leasing Commissions [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	1,036	1,818	3,916	4,752
Development Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	552	393	1,497	1,021
Disposition Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	546	1,622	3,263	1,622
Credit Facility Guaranty and Refinancing Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	$ 60	$ 60	$ 1,860	$ 60