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Real Estate Properties - Purchase Price Allocations (Details)
$ in Thousands
11 Months Ended
Jun. 30, 2017
property
Dec. 31, 2017
USD ($)
Business Acquisition [Line Items]    
Number of properties acquired | property 2  
Previously Acquired    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]    
Total consideration   $ 30,911
Previously Acquired | Land    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]    
Real estate property   3,289
Previously Acquired | Buildings and Improvements    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]    
Real estate property   27,136
Previously Acquired | Acquisition-related intangible assets    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]    
Acquisition-related intangibles   $ 486