Borrowed Funds (Summary Of Short-Term Borrowings) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016	[1]
Debt Instrument [Line Items]
Beginning Balance	$ 205,728	$ 205,553	$ 224,461
Short-term FHLB Advances [Member]
Debt Instrument [Line Items]
Beginning Balance	202,250	202,100
Average balance outstanding for the period	194,071	172,662
Maximum balance outstanding at any month end during period	$ 229,300	$ 218,950
Weighted average interest rate for the period	0.98%	0.58%
Weighted average interest rate for balances outstanding	1.30%	0.59%
Federal Funds Purchased and Lines of Credit [Member]
Debt Instrument [Line Items]
Beginning Balance	$ 3,478	$ 3,453
Average balance outstanding for the period	3,469	3,448
Maximum balance outstanding at any month end during period	$ 3,478	$ 3,453
Weighted average interest rate for the period	0.91%	0.50%
Weighted average interest rate for balances outstanding	1.25%	0.50%

[1] Derived from audited consolidated financial statements