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Organization and Business Operations - Additional Information (Detail) - segment
3 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Organization And Business Operations    
Ownership interest in Operating Partnership 98.70%  
Ownership percentage in Operating Partnership 1.30% 1.30%
Number of operating segments 1  
Minimum distribution percentage of taxable income to qualify for REIT 90.00%  
Invesco Investments (Bermuda) Ltd    
Organization And Business Operations    
Ownership percentage in Operating Partnership 1.30%