Quarterly report pursuant to Section 13 or 15(d)

TRANSACTIONS WITH AFFILIATES AND AFFILIATED ENTITIES - Narrative (Details)

v3.7.0.1
TRANSACTIONS WITH AFFILIATES AND AFFILIATED ENTITIES - Narrative (Details)
$ in Millions
6 Months Ended
Jun. 30, 2017
USD ($)
Related Party Transaction [Line Items]  
Management agreement, renewal term (in years) 1 year
Termination fee, number of months' pay (in months) 12 months
Proportion of directors' votes needed to terminate 0.6666666667000
Accruals for MSR Fund Payments $ 0.1
Mortgage Servicing Rights, Amount Transferred to Accrued Funds $ 0.6
Investment Interest Income - Excess MSRs [Member] | Credit Concentration Risk [Member] | Nationstar [Member]  
Related Party Transaction [Line Items]  
Percentage of UPB of loans underlying investments 63.50%
Investment Interest Income - MSRs [Member] | Credit Concentration Risk [Member] | Nationstar [Member]  
Related Party Transaction [Line Items]  
Percentage of UPB of loans underlying investments 21.40%
Investment Interest Income - Servicer Advances [Member] | Credit Concentration Risk [Member] | Nationstar [Member]  
Related Party Transaction [Line Items]  
Percentage of UPB of loans underlying investments 32.70%
Manager [Member]  
Related Party Transaction [Line Items]  
Management fee rate (percent) 1.50%
Incentive compensation percentage 25.00%
Interest rate for incentive compensation 10.00%
Nationstar [Member] | Residential Mortgage [Member]  
Related Party Transaction [Line Items]  
Unpaid Principal Balance $ 667.2
Nationstar [Member] | Real Estate Owned [Member]  
Related Party Transaction [Line Items]  
Unpaid balance of real estate owned 25.5
Nationstar [Member] | Non-Agency RMBS [Member]  
Related Party Transaction [Line Items]  
Face amount of investment 3,300.0
Unpaid Principal Balance $ 19,100.0
Redemption premium percentage 0.75%
Nationstar [Member] | Agency RMBS [Member]  
Related Party Transaction [Line Items]  
Face amount of investment $ 30.9