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Loans And Allowance For Loan Losses (Summary Of Purchased Credit-Impaired Loans, Additional Information Identified In The Corporation's Acquisition of Parkvale) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Outstanding balance $ 8,989
Carrying amount 5,565
Parkvale [Member]
 
Outstanding balance 9,074
Carrying amount $ 5,492