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Schedule of Mortgage Servicing Rights Sensitivity Analysis of Fair Value (Details)
$ in Thousands
Sep. 30, 2020
USD ($)
Dec. 31, 2019
USD ($)
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]    
Impact on fair value of 10% adverse change in prepayment speed $ (103,057) $ (88,459)
Impact on fair value of 20% adverse change in prepayment speed (193,815) (188,209)
Impact on fair value of 10% adverse change in delinquency (2,159) (7,470)
Impact on fair value of 20% adverse change in delinquency (3,894) (15,020)
Impact on fair value of 10% adverse change in discount rate (19,684) (49,274)
Impact on fair value of 20% adverse change in discount rate (38,195) (95,963)
Impact on fair value of 10% adverse change in per loan annual cost to service (18,506) (23,932)
Impact on fair value of 20% adverse change in per loan annual cost to service $ (37,096) $ (48,054)
Measurement Input, Constant Prepayment Rate [Member]    
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]    
Weighted average assumption 0.214 0.148
Measurement Input, Delinquency [Member]    
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]    
Weighted average assumption 0.024 0.009
Measurement Input, Discount Rate [Member]    
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]    
Weighted average assumption 0.051 0.072
Measurement Input, Per Loan Annual Cost to Service [Member]    
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]    
Weighted average assumption 68.63 66.62