Other Assets, Net - Components of Other Assets (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018	Feb. 28, 2018	Dec. 31, 2017
Other Assets [Line Items]
Amortization expense	$ 10,100	$ 16,000	$ 22,000	$ 32,600
Mortgage indebtedness	1,428,025		1,428,025				$ 641,082
Interest Rate Cap [Member]
Other Assets [Line Items]
Fair value of interest rate cap	4,800		4,800
Mortgages indebtedness [Member]
Other Assets [Line Items]
Mortgage indebtedness	1,270,000		1,270,000
Mortgages indebtedness [Member] \| Interest Rate Cap [Member]
Other Assets [Line Items]
Mortgage indebtedness					$ 1,350,000	$ 1,350,000
Puerto Rico [Member]
Other Assets [Line Items]
Prepaid tax assets expenses							$ 4,000
Retail Value Inc. [Member]
Other Assets [Line Items]
Wrote-off of prepaid tax assets to other income (expense), net	$ 4,000		$ 4,000