Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE OF FINANCIAL INSTRUMENTS (Loan Valuation) (Details)

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FAIR VALUE OF FINANCIAL INSTRUMENTS (Loan Valuation) (Details) - USD ($)
 6 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Carrying Value $ 62,708,000  
Discount Rate (as percent) 12.00%  
Loss Severity (as percent) 65.50%  
Face amount $ 145,244,000  
Corporate Loans | Lower Range    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Discount Rate (as percent) 0.00%  
Loss Severity (as percent) 0.00%  
Corporate Loans | Upper Range    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Discount Rate (as percent) 22.50%  
Loss Severity (as percent) 100.00%  
Corporate Loans | Weighted Average    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Discount Rate (as percent) 22.50%  
Loss Severity (as percent) 46.60%  
Real Estate Related and Other Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Carrying Value $ 62,708,000 $ 55,612,000
Fair Value 68,240,000  
Face amount 145,244,000  
Real Estate Related and Other Loans | Held-for-sale    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Carrying Value 62,708,000  
Face amount 145,244,000  
Real Estate Related and Other Loans | Held-for-sale | Corporate Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Carrying Value 62,708,000  
Fair Value 68,240,000  
Face amount 127,477,000  
Real Estate Related and Other Loans | Held-for-sale | Mezzanine Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Carrying Value 0  
Face amount $ 17,767,000