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Loans Receivable (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Jan. 31, 2017
Jun. 30, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loan carrying-value   $ 94,210    
Kennewick, Washington [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loan carrying-value   $ 85,709    
Interest rate of mortgage loans 9.00% 9.00%    
Loans receivable, current pay rate 8.75%      
Periodic payment terms, balloon payment to be received $ 87,245      
Percent of principal balance 94.00%      
Loss on the transaction $ 5,294      
Oklahoma City, Oklahoma [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loan carrying-value   $ 8,501    
Interest rate of mortgage loans 11.50% 11.50%    
Oklahoma City, Oklahoma [Member] | Tenant-in-Common [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loan carrying-value       $ 8,420
Ownership percentage     40.00% 40.00%
Professional fees $ 376