Allowance For Loan Losses (Schedule Of Information Related To Average Recorded Investment And Interest Income Recognized On Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Average recorded investment	$ 10,340	$ 5,216
With no related allowance recorded, Interest income recognized		50
With an allowance recorded, Average recorded investment	3,137	16,138
With an allowance recorded, Interest income recognized		166
Commercial And Industrial [Member]
Financing Receivable, Impaired [Line Items]
With an allowance recorded, Average recorded investment		118
With an allowance recorded, Interest income recognized		2
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Average recorded investment	10,340	5,216
With no related allowance recorded, Interest income recognized		50
With an allowance recorded, Average recorded investment	3,137	13,447
With an allowance recorded, Interest income recognized		147
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
With an allowance recorded, Average recorded investment		1,052
With an allowance recorded, Interest income recognized		11
Home equity - junior lien [Member]
Financing Receivable, Impaired [Line Items]
With an allowance recorded, Average recorded investment		1,521
With an allowance recorded, Interest income recognized		$ 6