Fair Value Measurements and Disclosures (Schedule of Quantitative Information about Level Three Fair Value Measurements - Nonrecurring Basis) (Details)	3 Months Ended
	Mar. 31, 2020 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Valuation Technique, Discounted cash flow	Discounted cash flow
Mortgage Servicing Rights [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Inputs, Loan Servicing Costs, Loans in Foreclosure	$ 1,000
Mortgage Servicing Rights [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input, Discount Rate	9.09%
Unobservable Input, Prepayment Speed	10.91%
Unobservable Input, Loan Servicing Costs, Performing Loans	$ 71
Unobservable Input, Loan Servicing Costs, Delinquent Loans	$ 200
Mortgage Servicing Rights [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input, Discount Rate	11.50%
Unobservable Input, Prepayment Speed	14.34%
Unobservable Input, Loan Servicing Costs, Performing Loans	$ 80
Unobservable Input, Loan Servicing Costs, Delinquent Loans	$ 750
Mortgage Servicing Rights [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable Input, Discount Rate	9.25%	[1]
Unobservable Input, Prepayment Speed	13.14%	[1]
Unobservable Input, Loan Servicing Costs, Performing Loans	$ 72	[1]

[1] *Ranges and weighted averages based on interest rate tranches