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Related Party Arrangements - Additional Information (Detail) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
May 10, 2019
Apr. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Related Party Transaction [Line Items]            
Cash distributions on restricted stock       $ 20,200 $ 385,985 $ 38,805
Expense Support Agreements | Restricted Stock            
Related Party Transaction [Line Items]            
Cash distributions on restricted stock     $ 100 $ 200 $ 3,000 $ 500
Advisor            
Related Party Transaction [Line Items]            
Advisory agreement extended through the date 2020-06          
Property Manager            
Related Party Transaction [Line Items]            
Property management agreement expire stated date   2018-06