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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Significant Accounting Policies [Line Items]      
Intangible assets and goodwill $ 12,100   $ 12,100
Intangible assets 4,300   4,300
Goodwill 7,800   7,800
Accumulated amortization of identified intangible assets 2,800    
Amortization of in-place leases 1,032 $ 335  
Cash and cash equivalents, restricted cash 5,300    
Deferred financing costs, net $ 18,400   18,900
Primary Beneficiary      
Significant Accounting Policies [Line Items]      
Ownership percentage 93.60%    
Reported Value Measurement [Member]      
Significant Accounting Policies [Line Items]      
Mortgage notes payable fair value $ 2,100,000   2,100,000
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2      
Significant Accounting Policies [Line Items]      
Mortgage notes payable fair value 2,100,000    
Leases, Acquired-in-Place      
Significant Accounting Policies [Line Items]      
Intangible assets 75,900    
Accumulated amortization of identified intangible assets $ 75,000   $ 74,000