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Related Party Transactions - QIA (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Aug. 23, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Noncontrolling Interest [Line Items]        
Gross proceeds from sale of shares $ 621,800 $ 611,206 $ 0 $ 0
Common Class A [Member]        
Noncontrolling Interest [Line Items]        
Common stock, par value (USD per share)   $ 0.01 $ 0.01  
Common shares [Member] | Common Class A [Member]        
Noncontrolling Interest [Line Items]        
Issuance of common shares (in shares) 29,610,854 29,610,854   2,556,000
Common shares issued (USD per share) $ 21.00      
Q REIT Holding LLC [Member]        
Noncontrolling Interest [Line Items]        
Interest held by Q REIT Holding LLC 9.90%      
Minimum interest required to be held by affiliate of QIA in order to purchase new equity securities 5.00%      
Threshold of equity securities issuance where top up rights are exercisable $ 1,000      
Threshold to indemnify 10.00%      
Q REIT Holding LLC [Member] | Common shares [Member] | Common Class A [Member]        
Noncontrolling Interest [Line Items]        
Interest held by Q REIT Holding LLC 19.40%