Loans (Schedule Of Acquired Purchase Credit Impaired Loans By Portfolio Segment) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value	$ 150,252	$ 176,381
Unpaid balance	169,671	199,687
Commercial Financial And Industrial Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value	79,575	96,598
Unpaid balance	89,462	109,280
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value	30,950	36,107
Unpaid balance	35,879	41,488
Consumer Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value	35,820	38,176
Unpaid balance	39,995	42,568
Credit Card and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying value	3,907	5,500
Unpaid balance	$ 4,335	$ 6,351