Borrowed Funds (Schedule Of Borrowed Funds) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Short-term Debt	$ 183,814	$ 110,927
Securities Sold under Agreements to Repurchase [Member]
Short-term Debt	45,814	37,273
Short-term Debt, Average Outstanding Amount	$ 45,812	$ 44,218
Short-term Debt, Weighted Average Interest Rate	0.05%	0.07%
Federal Home Loan Bank Advances [Member]
Short-term Debt	$ 138,000	$ 73,654
Short-term Debt, Average Outstanding Amount	$ 97,569	$ 28,289
Short-term Debt, Weighted Average Interest Rate	1.31%	3.11%