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Fair Value Measurements Fair Value Unobservable Level 3 Measurements (Details) - Fair Value, Inputs, Level 3 - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2025
Dec. 31, 2024
Dec. 31, 2023
Derivative Financial Instruments, Assets [Member] | Fair Value, Measurements, Recurring      
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]      
Fair Value, Net Derivative Asset (Liability) Measured On Recurring Basis With Unobservable Inputs - Interest Rate Lock Commitements   $ 300  
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs $ 1,129 327 $ 439
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Purchases 10,261 11,771  
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements (9,979) (8,816)  
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings 521 (3,068)  
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Period Increase (Decrease) 803 (113)  
Derivative Financial Instruments, Liabilities [Member] | Fair Value, Measurements, Recurring      
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]      
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs 450 (254) $ 673
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Purchases (2,709) (4,000)  
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements 2,209 3,512  
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings 1,204 (438)  
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Period Increase (Decrease) $ 703 $ (927)  
Discounted Cash Flow | Servicing Contracts [Member] | Minimum      
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]      
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate 5.00%    
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed 0.00%    
Discounted Cash Flow | Servicing Contracts [Member] | Maximum      
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]      
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate 8.00%    
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed 100.00%    
Discounted Cash Flow | Servicing Contracts [Member] | Weighted Average [Member]      
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]      
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Discount Rate 5.00%    
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed 7.00%    
Discounted Cash Flow | Interest Rate Lock Commitments [Member] | Minimum      
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]      
Assumption for Fair Value of Interest Rate Lock Commitments, Closing Ratio 67.00%    
Discounted Cash Flow | Interest Rate Lock Commitments [Member] | Maximum      
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]      
Assumption for Fair Value of Interest Rate Lock Commitments, Closing Ratio 100.00%    
Discounted Cash Flow | Interest Rate Lock Commitments [Member] | Weighted Average [Member]      
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]      
Assumption for Fair Value of Interest Rate Lock Commitments, Closing Ratio 92.00%    
Appraisals/Discounted Cash Flow [Member] | Impaired Finance Receivable [Member] | Minimum      
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]      
Assumption for Fair Value of Financing Receivable, Individually Evaluated for Credit Loss, Collateral Realization 100.00%    
Assumption for Fair Value of Financing Receivable, Individually Evaluated for Credit Loss, Discount factor 20.00%    
Appraisals/Discounted Cash Flow [Member] | Impaired Finance Receivable [Member] | Maximum      
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]      
Assumption for Fair Value of Financing Receivable, Individually Evaluated for Credit Loss, Collateral Realization 100.00%    
Assumption for Fair Value of Financing Receivable, Individually Evaluated for Credit Loss, Discount factor 90.00%    
Appraisals/Discounted Cash Flow [Member] | Impaired Finance Receivable [Member] | Weighted Average [Member]      
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]      
Assumption for Fair Value of Financing Receivable, Individually Evaluated for Credit Loss, Collateral Realization 100.00%    
Assumption for Fair Value of Financing Receivable, Individually Evaluated for Credit Loss, Discount factor 62.00%