Quarterly report pursuant to Section 13 or 15(d)

INVESTMENTS IN MORTGAGE SERVICING RIGHTS AND MORTGAGE SERVICING RIGHTS FINANCING RECEIVABLES - Narrative (Details)

v3.10.0.1
INVESTMENTS IN MORTGAGE SERVICING RIGHTS AND MORTGAGE SERVICING RIGHTS FINANCING RECEIVABLES - Narrative (Details) - USD ($)
$ in Thousands
6 Months Ended 9 Months Ended
Aug. 31, 2018
Jun. 28, 2018
Jun. 04, 2018
Jun. 01, 2018
May 31, 2018
May 25, 2018
May 01, 2018
Mar. 28, 2018
Feb. 28, 2018
Jan. 18, 2018
Nov. 29, 2017
Jul. 23, 2017
Jun. 30, 2018
Sep. 30, 2018
Jan. 01, 2018
Dec. 31, 2017
Sep. 30, 2017
Schedule of MSRs [Line Items]                                  
UPB of Underlying Mortgages                           $ 84,100,000      
Payments to acquire MSRs $ 220,500 $ 66,500 $ 19,300 $ 6,100 $ 79,900 $ 26,300 $ 46,800 $ 96,600 $ 33,500         952,100      
Initial contract term (in years)                       5 years          
Contract extension term with thirty day notice (in months)                       3 months          
Residential mortgage loans repurchase liability                           110,181   $ 0  
Residential mortgage loans subject to repurchase                           110,181   $ 0 $ 0
Ocwen                                  
Schedule of MSRs [Line Items]                                  
UPB of Underlying Mortgages                             $ 86,800,000    
Payments to acquire MSRs                   $ 279,600              
MSRs                                  
Schedule of MSRs [Line Items]                                  
UPB of Underlying Mortgages $ 18,500,000 $ 4,700,000 $ 2,100,000 $ 500,000 $ 6,100,000 $ 2,100,000 $ 4,600,000 $ 8,100,000 $ 3,300,000                
Mortgage Loans Subserviced                                  
Schedule of MSRs [Line Items]                                  
UPB of Underlying Mortgages                           44,700,000      
Subservicing revenue                           $ 30,300      
Ocwen                                  
Schedule of MSRs [Line Items]                                  
Subservicer percent of UPB                           24.00%      
Ocwen | New Residential Mortgage LLC | MSRs                                  
Schedule of MSRs [Line Items]                                  
Payments to acquire MSRs                           $ 334,200      
UPB of underlying loans, transferred                           $ 15,500,000      
Nationstar                                  
Schedule of MSRs [Line Items]                                  
Subservicer percent of UPB                           25.70%      
Ditech Financial LLC                                  
Schedule of MSRs [Line Items]                                  
Subservicer percent of UPB                           21.80%      
PHH Mortgage Corporation                                  
Schedule of MSRs [Line Items]                                  
Subservicer percent of UPB                           11.50%      
PHH Mortgage Corporation | New Residential Mortgage LLC | MSRs                                  
Schedule of MSRs [Line Items]                                  
UPB of underlying mortgages, amount unsettled                           $ 3,700,000      
PHH Mortgage Corporation | New Residential Mortgage LLC | Seasoned Agency Loans                                  
Schedule of MSRs [Line Items]                                  
Payments to acquire MSRs, amount unsettled                           $ 21,000      
Flagstar                                  
Schedule of MSRs [Line Items]                                  
Subservicer percent of UPB                           0.60%      
ShellPoint | NRM Acquisition LLC | MSRs                                  
Schedule of MSRs [Line Items]                                  
UPB of Underlying Mortgages                     $ 7,800,000            
Payments to acquire MSRs                     $ 81,000            
New Penn | MSRs                                  
Schedule of MSRs [Line Items]                                  
UPB of Underlying Mortgages                         $ 11,400,000        
Payments to acquire MSRs                         $ 139,100