Revenue Recognition - Schedule of Fee and Other Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	$ 41,413	$ 55,988	$ 42,788
Other property income:
Other	4,056	7,694	6,989
Total fee and other income	45,469	63,682	49,777
Asset and Property Management Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	31,255	42,355	31,751
Leasing Commissions [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	5,528	6,300	6,380
Development Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	1,428	2,019	1,638
Disposition Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	3,142	3,454	2,959
Credit Facility Guaranty and Refinancing Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue from contracts with customers	$ 60	$ 1,860	$ 60