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Basis of Presentation (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]          
Customer deposits $ 520,549   $ 520,549   $ 512,580
Contract asset insurance renewals 90,900   90,900   91,100
Residential mortgage loans available-for-sale fair value 581,597   581,597   629,582
Residential mortgage loans available-for-sale aggregate outstanding principal balance 587,100   587,100   645,700
Net gains from the sale of mortgages 59,700 $ 60,700 $ 109,500 $ 111,300  
Variability in future cash flows of derivative instruments in days     90 days    
Interest rate lock commitments          
Finite-Lived Intangible Assets [Line Items]          
Derivative, notional amount 739,000   $ 739,000   469,400
Forward contracts          
Finite-Lived Intangible Assets [Line Items]          
Derivative, notional amount 1,100,000   1,100,000   977,000
Whole loan commitments          
Finite-Lived Intangible Assets [Line Items]          
Derivative, notional amount $ 271,000   $ 271,000   $ 237,100