Premises And Equipment (Major Categories Of Premises And Equipment And Accumulated Depreciation) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 71,146	$ 62,481
Less accumulated depreciation	26,978	24,928
Total premises and equipment, net	44,168	37,553
Land [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	10,645	10,415
Building and improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	34,885	32,283
Furniture and equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 25,616	$ 19,783