Other Assets and Other Liabilities - Summary of Components of Accounts Payable, Accrued Expenses, and Other Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Payables And Accruals [Abstract]
Intangible liabilities, net	$ 11,046
Real estate taxes payable	9,150
Payable for real estate-related securities	6,648
Accounts payable and accrued expenses	5,645
Distribution payable	4,083		$ 0
Tenant security deposits	3,506
Prepaid rental income	3,306
Accrued interest expense	2,645
Other	607	$ 29
Total	$ 46,636	$ 29