Goodwill And Intangible Assets (Schedule Of Activity In Goodwill And Core Deposit Intangibles) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Goodwill, Beginning Balance			$ 72,334,000
Goodwill, Ending Balance	72,334,000		72,334,000
Amortization of intangibles	139,000	669,000	2,033,000	2,007,000
Total Goodwill and Core Deposit Intangibles, Beginning Balance			74,843,000
Total Goodwill and Core Deposit Intangibles, Ending Balance	72,810,000		72,810,000
Core deposit intangibles, useful life			6 years
Core Deposits [Member]
Core Deposit Intangibles, Beginning Balance			2,509,000
Amortization of intangibles			2,033,000
Core Deposit Intangibles, Ending Balance	476,000		476,000
Expected amortization expense per quarter for remainder of fiscal year			$ 139,000