Quarterly report pursuant to Section 13 or 15(d)

REAL ESTATE RELATED AND OTHER LOANS AND RESIDENTIAL MORTGAGE LOANS (Geographic Distribution) (Details)

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REAL ESTATE RELATED AND OTHER LOANS AND RESIDENTIAL MORTGAGE LOANS (Geographic Distribution) (Details) - Real Estate Related and Other Loans
$ in Thousands
Sep. 30, 2017
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]  
Outstanding Face Amount $ 77,151
Percentage of loans (as percent) 100.00%
Foreign  
Accounts, Notes, Loans and Financing Receivable [Line Items]  
Percentage of loans (as percent) 100.00%
Real Estate  
Accounts, Notes, Loans and Financing Receivable [Line Items]  
Outstanding Face Amount $ 63,454
Real Estate | Foreign  
Accounts, Notes, Loans and Financing Receivable [Line Items]  
Outstanding Face Amount 63,454
Other | Other  
Accounts, Notes, Loans and Financing Receivable [Line Items]  
Outstanding Face Amount $ 13,697