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) - Level 3 - Weighted Average	Mar. 31, 2019
Discounted cash flow | Mortgage Servicing Rights | Constant prepayment rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Residential mortgage servicing rights	0.1366
Discounted cash flow | Mortgage Servicing Rights | Discount rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Residential mortgage servicing rights	0.0971
Discounted cash flow | Junior Subordinated Debentures | Credit spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Junior subordinated debentures	0.0451
Internal pricing model | Interest Rate Lock Commitments | Pull-through rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Interest rate lock commitments	0.8907