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Subsequent Events (Details)
$ in Thousands
1 Months Ended 3 Months Ended
May 09, 2018
USD ($)
property
Mar. 31, 2018
USD ($)
Mar. 31, 2017
USD ($)
Subsequent Event [Line Items]      
Payments to acquire real estate   $ 0 $ 48,250
Olive Branch, Mississippi [Member] | Industrial Property [Member] | Subsequent Event [Member]      
Subsequent Event [Line Items]      
Number of real estate properties acquired | property 2    
Payments to acquire real estate $ 92,512    
Warren, Michigan | Subsequent Event [Member]      
Subsequent Event [Line Items]      
Mortgage loans on real estate $ 25,850    
Stated interest rate 5.40%    
LCIF [Member] | Warren, Michigan | Subsequent Event [Member]      
Subsequent Event [Line Items]      
Mortgage loans on real estate $ 25,850    
Stated interest rate 5.40%