Revenue Recognition - Schedule of Fee and Other Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	$ 16,585	$ 7,543
Other property income:
Other	2,216	1,759
Total fee and other income	18,801	9,302
Asset and Property Management Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	11,531	5,596
Leasing Commissions [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	1,499	1,622
Development Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	553	325
Disposition Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	1,202	0
Credit Facility Guaranty and Refinancing Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	$ 1,800	$ 0