Quarterly report pursuant to Section 13 or 15(d)

INVESTMENTS IN RESIDENTIAL MORTGAGE LOANS - Narrative (Details)

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INVESTMENTS IN RESIDENTIAL MORTGAGE LOANS - Narrative (Details)
$ in Millions
6 Months Ended
Jun. 30, 2017
USD ($)
Mortgage Loans on Real Estate [Line Items]  
Threshold period past due (in days) 60 days
Government Guaranteed Mortgage Loans upon Foreclosure Receivable [Member]  
Mortgage Loans on Real Estate [Line Items]  
Claims receivable $ 45.7
Reverse Mortgage Loans [Member]  
Mortgage Loans on Real Estate [Line Items]  
Unpaid principal balance 0.5
Residential Mortgage Loans [Member]  
Mortgage Loans on Real Estate [Line Items]  
Unpaid principal balance $ 491.3