Premises And Equipment (Premises And Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	$ 68,375	$ 66,035
Accumulated depreciation	(50,837)	(47,140)
Premises and equipment, net	17,538	18,895
Land [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	$ 1,732
Buildings [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	39 years
Premises and equipment, Gross	$ 3,436
Furniture, Fixtures, and Equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	$ 52,172	51,789
Furniture, Fixtures, and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	12 years
Furniture, Fixtures, and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, Gross	$ 11,035	$ 14,246
Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	10 years
Leasehold Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	6 years