Quarterly report [Sections 13 or 15(d)]

Servicing Activities - Mortgage Servicing Rights Sensitivity Analysis of Fair Value (Details)

v3.26.1
Servicing Activities - Mortgage Servicing Rights Sensitivity Analysis of Fair Value (Details)
$ in Thousands
Mar. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Weighted average prepayment speed:    
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 $ (48,843) $ (51,264)
Impact on fair value of 20% adverse change $ (95,118) $ (99,777)
Weighted average prepayment speed: | Weighted Average    
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 0.066 0.068
Weighted average delinquency:    
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 0.009
Impact on fair value of 10% adverse change $ (1,079) $ (1,078)
Impact on fair value of 20% adverse change (2,154) (2,170)
Weighted average option-adjusted spread:    
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 (58,340) (59,737)
Impact on fair value of 20% adverse change $ (113,981) $ (116,694)
Weighted average option-adjusted spread: | Weighted Average    
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 0.052 0.052
Weighted average per loan annual cost to service:    
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 $ (30,381) $ (30,898)
Impact on fair value of 20% adverse change $ (60,762) $ (61,797)
Weighted average per loan annual cost to service: | Weighted Average    
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 65.03 65.03