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Fair Value Measurement (Schedule Of A Description Of The Valuation Technique, Unobservable Input, And Qualitative Information For The Company's Assets And Liabilities Classified As Level 3) (Details)
$ in Thousands
Sep. 30, 2024
USD ($)
Jun. 30, 2024
USD ($)
Dec. 31, 2023
USD ($)
Sep. 30, 2023
USD ($)
Jun. 30, 2023
USD ($)
Dec. 31, 2022
USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Residential mortgage servicing rights, at fair value $ 101,919 $ 110,039 $ 109,243 $ 117,640 $ 172,929 $ 185,017
Asset Derivatives 88,218   38,085      
Derivative Liability 209,996   261,091      
Junior subordinated debentures, at fair value 311,896   316,440      
Residential mortgage servicing rights            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Residential mortgage servicing rights, at fair value 101,919   109,243      
Interest rate lock commitments, net            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Asset Derivatives 82          
Derivative Liability     137      
Junior subordinated debentures            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Junior subordinated debentures, at fair value 311,896   316,440      
Level 3            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Residential mortgage servicing rights, at fair value 101,919   109,243      
Junior subordinated debentures, at fair value $ 311,896   $ 316,440      
Level 3 | Discounted cash flow | Residential mortgage servicing rights | Weighted Average | Constant prepayment rate            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Servicing asset, measurement input 0.0724   0.0678      
Level 3 | Discounted cash flow | Residential mortgage servicing rights | Weighted Average | Discount rate            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Servicing asset, measurement input 0.1024   0.1025      
Level 3 | Discounted cash flow | Residential mortgage servicing rights | Minimum | Constant prepayment rate            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Servicing asset, measurement input 0.0606   0.0607      
Level 3 | Discounted cash flow | Residential mortgage servicing rights | Minimum | Discount rate            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Servicing asset, measurement input 0.0962   0.0950      
Level 3 | Discounted cash flow | Residential mortgage servicing rights | Maximum | Constant prepayment rate            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Servicing asset, measurement input 0.2635   0.2817      
Level 3 | Discounted cash flow | Residential mortgage servicing rights | Maximum | Discount rate            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Servicing asset, measurement input 0.1613   0.1605      
Level 3 | Discounted cash flow | Junior subordinated debentures | Weighted Average | Credit spread            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Debt instrument, measurement input 0.0367   0.0339      
Level 3 | Discounted cash flow | Junior subordinated debentures | Minimum | Credit spread            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Debt instrument, measurement input 0.0235   0.0225      
Level 3 | Discounted cash flow | Junior subordinated debentures | Maximum | Credit spread            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Debt instrument, measurement input 0.0484   0.0466      
Level 3 | Internal pricing model | Interest rate lock commitments, net | Weighted Average | Pull-through rate            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Derivative asset, measurement input 0.8573          
Derivative Liability, Measurement Input     0.8553      
Level 3 | Internal pricing model | Interest rate lock commitments, net | Minimum | Pull-through rate            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Derivative asset, measurement input 0.6628          
Derivative Liability, Measurement Input     0.6733      
Level 3 | Internal pricing model | Interest rate lock commitments, net | Maximum | Pull-through rate            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Derivative asset, measurement input 1.0000          
Derivative Liability, Measurement Input     1.0000