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Equity - Narrative (Details)
 2 Months Ended 12 Months Ended
Feb. 26, 2019
USD ($)
$ / shares
shares
Dec. 31, 2018
USD ($)
vote
$ / shares
shares
Dec. 31, 2017
USD ($)
$ / shares
shares
Dec. 31, 2016
USD ($)
Nov. 02, 2018
USD ($)
Nov. 01, 2018
USD ($)
Dividends Payable [Line Items]            
Common stock, shares authorized (in shares) | shares   400,000,000 400,000,000      
Common stock, par value (in dollars per share) | $ / shares   $ 0.01 $ 0.01      
Common stock votes | vote   1        
Repurchase of common stock   $ 33,113,000 $ 537,000 $ 7,197,000    
Common stock repurchased and retired   $ 32,182,000        
Preferred stock, shares authorized (in shares) | shares   10,000,000 10,000,000      
Preferred stock, par value (in dollars per share) | $ / shares   $ 0.01 $ 0.01      
Preferred stock, shares outstanding (in shares) | shares   0 0      
Operating partnership units option to redeem for common stock   1        
Distribution per unit (in dollars per share) | $ / shares   $ 11.76        
Unaffiliated Third Parties            
Dividends Payable [Line Items]            
Units of partnership interest, amount (in shares) | shares   796,684 0      
Common Stock            
Dividends Payable [Line Items]            
Aggregate offering price   $ 200,000,000 $ 200,000,000      
Number of shares of stock sold (in shares) | shares   7,472,946        
Price per share of stock sold (in dollars per share) | $ / shares   $ 12.56        
Proceeds from sale of stock   $ 92,900,000        
Amount authorized to be repurchased         $ 250,000,000 $ 150,000,000
Shares repurchased during period (in shares) | shares   3,384,359        
Average cost per share (in dollars per share) | $ / shares   $ 9.49        
Repurchase of common stock   $ 32,200,000        
Common stock repurchased and retired   $ 34,000        
Subsequent Event            
Dividends Payable [Line Items]            
Value amount of shares authorized to be repurchased (up to) $ 188,000,000          
Subsequent Event | Common Stock            
Dividends Payable [Line Items]            
Shares repurchased during period (in shares) | shares 3,143,922          
Average cost per share (in dollars per share) | $ / shares $ 9.52          
Common stock repurchased and retired $ 30,000,000