Fair Value Measurements (Schedule of Fair Value Disclosures Measured On Nonrecurring Basis) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Collateral Dependent Impaired Loans	$ 11,772	$ 171
Loans Nonrecurring Basis Gains (Losses)	(3,214)	(139)
Mortgage servicing rights	5,731	7,235
Mortgage Servicing Rights Nonrecurring Basis Gains (Losses)	(1,823)	(404)
Long-lived assets	0	820
Long Lived Assets Nonrecurring Basis Gains Losses	0	(318)
Fair Value, Inputs, Level 1 [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Collateral Dependent Impaired Loans	0	0
Mortgage servicing rights	0	0
Long-lived assets	0	0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Collateral Dependent Impaired Loans	0	0
Mortgage servicing rights	0	0
Long-lived assets	0	0
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Collateral Dependent Impaired Loans	11,772	171
Mortgage servicing rights	5,731	7,235
Long-lived assets	$ 0	$ 820