Borrowed Funds (Summary Of Short-Term Borrowings) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Short-term Debt [Line Items]
Balance	$ 20,957	$ 955	$ 15,956	[1]
Short-Term FHLB Advances [Member]
Short-term Debt [Line Items]
Balance	20,000		15,000
Average balance outstanding for the period	13,294		2,753
Maximum balance outstanding at any month end during period	20,000		15,000
Weighted average interest rate for the period	0.23%	0.00%	0.17%
Weighted average interest rate for balances outstanding	0.26%	0.00%	0.15%
Repurchase Agreements [Member]
Short-term Debt [Line Items]
Balance
Average balance outstanding for the period		709	531
Maximum balance outstanding at any month end during period		1,233	1,233
Weighted average interest rate for the period	0.00%	0.15%	0.15%
Weighted average interest rate for balances outstanding	0.00%	0.00%	0.00%
Federal Funds Purchased And Lines Of Credit [Member]
Short-term Debt [Line Items]
Balance	957	955	956
Average balance outstanding for the period	956	954	954
Maximum balance outstanding at any month end during period	$ 957	$ 955	$ 956
Weighted average interest rate for the period	0.25%	0.25%	0.25%
Weighted average interest rate for balances outstanding	0.25%	0.25%	0.25%

[1] December 31, 2011 financial information has been extracted from audited consolidated financial statements