v3.26.3
Fair Value Measurements - Fair Value Measurement Inputs and Valuation Techniques (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period $ 51,142 $ 55,951
Included in earnings (or changes in net assets) (7,677) 1,764
Included in other comprehensive income (6) (3)
Settlements (887) (3,685)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Balance, end of period 42,572 54,027
Change in unrealized gains or losses for the period included in other comprehensive income for assets held at the end of the reporting period (6) (3)
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at the end of the reporting period (7,662) 1,748
Location, Statement of Income, Balance [Axis]: us-gaap:GainLossOnSalesOfMortgageBackedSecuritiesMBS    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Included in earnings (or changes in net assets) (7,662) 1,748
Location, Statement of Income, Balance [Axis]: us-gaap:InterestAndDividendIncomeOperating    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Included in earnings (or changes in net assets) (15) 16
Available-For-Sale - Debt Securities    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 1,892 2,689
Included in earnings (or changes in net assets) (15) 16
Included in other comprehensive income (6) (3)
Settlements (607) (638)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Balance, end of period 1,264 2,064
Change in unrealized gains or losses for the period included in other comprehensive income for assets held at the end of the reporting period (6) (3)
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at the end of the reporting period 0 0
Trading - Residual Interests    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period 49,250 53,262
Included in earnings (or changes in net assets) (7,662) 1,748
Included in other comprehensive income 0 0
Settlements (280) (3,047)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Balance, end of period 41,308 51,963
Change in unrealized gains or losses for the period included in other comprehensive income for assets held at the end of the reporting period 0 0
Change in unrealized gains or losses for the period included in earnings (or changes in net assets) for assets held at the end of the reporting period $ (7,662) $ 1,748