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Organization (Details)
Jul. 17, 2018
Jun. 30, 2018
Dec. 31, 2017
Schedule of Equity Method Investments [Line Items]      
Number of real estate properties owned   86  
Corporate Joint Venture      
Schedule of Equity Method Investments [Line Items]      
Number of real estate properties owned   14 14
Equity method investment, ownership percentage   20.00% 20.00%
Subsequent Event      
Schedule of Equity Method Investments [Line Items]      
Business combination, date of combination agreement Jul. 17, 2018    
Business combination, ratio of shares of acquirer issued for acquired entity shares 2.04