Goodwill And Other Intangible Assets (Schedule Of Intangible Assets With Estimable Useful Lives) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 28,971	$ 28,852
Accumulated Amortization	(24,248)	(23,159)
Valuation Allowance	(206)	(393)
Net Amount	4,517	5,300
Core Deposit Premium [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	25,720	25,720
Accumulated Amortization	(21,805)	(20,892)
Valuation Allowance	0	0
Net Amount	3,915	4,828
Mortgage Servicing Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,251	3,132
Accumulated Amortization	(2,443)	(2,267)
Valuation Allowance	(206)	(393)
Net Amount	$ 602	$ 472