Derivative Instruments (Schedule Of Mortgage Banking Derivatives) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Fair value, Derivative assets	$ 538	$ 1,944	$ 12
Fair value, Derivative liabilities	(538)	(1,944)	(12)
Interest Rate Commitments [Member]
Derivatives, Fair Value [Line Items]
Notional Amount, Assets	50,312	1,048,613	297,454
Fair value, Derivative assets	555	18,100	3,104
TBA Mortgage-Back Securities [Member]
Derivatives, Fair Value [Line Items]
Notional Amount, Assets	53,250	506,750	225,500
Fair value, Derivative assets	53,250	506,750	225,500
Fair value, Derivative liabilities	$ (73)	$ (2,690)	$ (350)