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Fair Value - Narrative (Details)
3 Months Ended
Sep. 30, 2015
Loans Held for Investment - Reverse Mortgages [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Life 6 years 8 months 12 days
Repayment rate 19.39%
Discount rate 2.95%
HMBS - Related Borrowings [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Life 5 years 6 months 14 days
Repayment rate 19.39%
Discount rate 2.27%
Minimum [Member] | Loans Held for Investment - Reverse Mortgages [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Life 6 years 3 months 29 days
Repayment rate 4.85%
Minimum [Member] | HMBS - Related Borrowings [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Life 4 years 10 months 6 days
Repayment rate 4.85%
Maximum [Member] | Loans Held for Investment - Reverse Mortgages [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Life 10 years 2 months 19 days
Repayment rate 53.75%
Maximum [Member] | HMBS - Related Borrowings [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Life 10 years 2 months 19 days
Repayment rate 53.75%