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)	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Constant prepayment rate	12.35%	11.43%
Discount rate	9.69%	9.69%
Mortgage Servicing Rights
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Valuation technique	Discounted cash flow
Interest Rate Lock Commitments
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Valuation technique	Internal Pricing Model
Junior Subordinated Debentures
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Valuation technique	Discounted cash flow
Weighted Average | Mortgage Servicing Rights
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Constant prepayment rate	12.35%
Discount rate	9.69%
Weighted Average | Interest Rate Lock Commitments
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Pull-through rate	85.78%
Weighted Average | Junior Subordinated Debentures
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Credit Spread	5.26%