Revenue Recognition - Schedule of Fee and Other Income (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	$ 8,620	$ 14,398	$ 23,367	$ 30,983
Other property income:
Other	872	1,985	2,906	4,201
Total fee and other income	9,492	16,383	26,273	35,184
Asset and Property Management Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	7,551	11,110	16,876	22,641
Leasing Commissions [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	682	1,381	3,678	2,880
Development Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	177	392	1,047	945
Disposition Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	210	1,515	1,766	2,717
Credit Facility Guaranty and Refinancing Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	$ 0	$ 0	$ 0	$ 1,800