v3.26.3
Basis of Presentation (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Intangible Asset, Finite-Lived [Line Items]          
Customer deposits $ 515,886   $ 515,886   $ 387,837
Contract asset insurance renewals 90,000   90,000   82,600
Residential mortgage loans available-for-sale fair value 433,947   433,947   613,665
Residential mortgage loans available-for-sale aggregate outstanding principal balance 463,500   463,500   621,600
Net gains from the sale of mortgages 54,100 $ 59,600 $ 142,000 $ 169,100  
Variability in future cash flows of derivative instruments in days     120 days    
IRLCs          
Intangible Asset, Finite-Lived [Line Items]          
Derivative, notional amount 1,500,000   $ 1,500,000   820,200
Forward contracts          
Intangible Asset, Finite-Lived [Line Items]          
Derivative, notional amount 1,800,000   1,800,000   1,300,000
Whole loan commitments          
Intangible Asset, Finite-Lived [Line Items]          
Derivative, notional amount $ 161,900   $ 161,900   $ 270,600