Revenue Recognition - Schedule of Fee and Other Income (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	$ 55,988	$ 42,788	$ 30,553
Other property income:
Other	7,694	6,989	6,645
Total fee and other income	63,682	49,777	37,198
Asset and Property Management Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	42,355	31,751	21,494
Leasing Commissions [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	6,300	6,380	7,138
Development Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	2,019	1,638	1,921
Disposition Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	3,454	2,959	0
Credit Facility Guaranty and Refinancing Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	$ 1,860	$ 60	$ 0