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Schedule of Mortgage Servicing Rights Sensitivity Analysis of Fair Value (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
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 $ (88,459) $ (67,245)
Impact on fair value of 20% adverse change in prepayment speed (188,209) (130,371)
Impact on fair value of 10% adverse change in delinquency (7,470) (6,911)
Impact on fair value of 20% adverse change in delinquency (15,020) (13,688)
Impact on fair value of 10% adverse change in discount rate (49,274) (62,528)
Impact on fair value of 20% adverse change in discount rate (95,963) (121,135)
Impact on fair value of 10% adverse change in per loan annual cost to service (23,932) (24,386)
Impact on fair value of 20% adverse change in per loan annual cost to service $ (48,054) $ (48,972)
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 0.148 0.086
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 0.009 0.013
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 0.072 0.094
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 66.62 69.34