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Mortgage Loans Held for Sale and Warehouse Lines of Credit - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Financial Asset, Equal to or Greater than 90 Days Past Due          
Short-Term Debt [Line Items]          
Unpaid principal balance of loans past due $ 6.2   $ 6.2   $ 1.4
Warehouse Agreement Borrowings          
Short-Term Debt [Line Items]          
Weighted average interest rate (as a percent)     6.08% 6.90%  
Compensating balances $ 3.8   $ 3.8   $ 18.8
Collateral Pledged          
Short-Term Debt [Line Items]          
Average days loans held for sale 26 days 29 days 24 days 28 days