Borrowed Funds (Summary Of Short-Term Borrowings) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Debt Instrument [Line Items]
Beginning Balance	$ 153,448	$ 148,985	$ 171,394	[1]
Short-term FHLB Advances [Member]
Debt Instrument [Line Items]
Beginning Balance	150,000	141,550	167,950
Average balance outstanding for the period	165,102	139,590	146,412
Maximum balance outstanding at any month end during period	$ 188,450	$ 141,780	$ 171,160
Weighted average interest rate for the period	0.58%	0.32%	0.43%
Weighted average interest rate for balances outstanding	0.57%	0.31%	0.35%
Federal Funds Purchased and Lines of Credit [Member]
Debt Instrument [Line Items]
Beginning Balance	$ 3,448	$ 7,435	$ 3,444
Average balance outstanding for the period	3,446	5,189	4,690
Maximum balance outstanding at any month end during period	$ 3,448	$ 7,435	$ 7,438
Weighted average interest rate for the period	0.50%	0.25%	0.50%
Weighted average interest rate for balances outstanding	0.50%	0.25%	0.26%

[1] December 31, 2015 financial information has been extracted from audited consolidated financial statements