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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
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 2,600   2,600
Amortization of in-place leases 335 $ 665  
Cash and cash equivalents, restricted cash 5,000   5,000
Debt, secured and unsecured 2,100,000   2,100,000
Accumulated amortization for deferred financing costs 34,700   33,700
Fair Value, Inputs, Level 2      
Significant Accounting Policies [Line Items]      
Mortgage notes payable fair value 2,200,000   $ 2,200,000
Identified Intangible Assets      
Significant Accounting Policies [Line Items]      
Amortization of in-place leases $ 100 $ 100  
Primary Beneficiary      
Significant Accounting Policies [Line Items]      
Ownership percentage 92.00%