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Allowance for Loan and Lease Losses and Unfunded Commitments and Letters of Credit (Changes in the Allowance for Unfunded Commitments and Letters of Credit) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Allowance For Loan And Lease Losses And Unfunded Loan Commitments And Letters Of Credit    
Beginning balance $ 2,930 $ 2,655
Allowance for Loan and Lease Losses, Net Changes In Unfunded Commitments and Letters Of Credit Allowance 0 0
Ending balance $ 2,930 $ 2,655