Loans (Changes In The Allowance For Loan Losses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	$ 24,714	$ 23,260
Charge-offs	2,643	1,994
Recoveries	1,047	1,112
Provision (credit)	2,709	1,385
Ending balance	25,827	23,763
Allowance for loan losses, Individually Evaluated for impairment	1,992	1,226
Allowance for loan losses, Collectively Evaluated for impairment	23,835	22,537
Loans, Ending balance	1,686,551	1,494,579	1,675,453
Loans, Individually Evaluated for impairment	8,383	4,903
Loans, Collectively Evaluated for impairment	1,678,168	1,489,676
Commercial Business [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	4,884	4,036
Charge-offs	239	55
Recoveries	37	77
Provision (credit)	485	328
Ending balance	5,167	4,386
Allowance for loan losses, Individually Evaluated for impairment	1,335	554
Allowance for loan losses, Collectively Evaluated for impairment	3,832	3,832
Loans, Ending balance	259,054	233,690	258,706
Loans, Individually Evaluated for impairment	5,616	1,863
Loans, Collectively Evaluated for impairment	253,438	231,827
Commercial Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	6,581	6,418
Charge-offs	3	120
Recoveries	14	15
Provision (credit)	379	475
Ending balance	6,971	6,788
Allowance for loan losses, Individually Evaluated for impairment	657	672
Allowance for loan losses, Collectively Evaluated for impairment	6,314	6,116
Loans, Ending balance	425,586	407,293	414,282
Loans, Individually Evaluated for impairment	2,767	3,040
Loans, Collectively Evaluated for impairment	422,819	404,253
Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	740	858
Charge-offs	162	106
Recoveries	17	70
Provision (credit)	73
Ending balance	668	822
Allowance for loan losses, Collectively Evaluated for impairment	668	822
Loans, Ending balance	126,058	112,096	133,341
Loans, Collectively Evaluated for impairment	126,058	112,096
Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	1,282	1,242
Charge-offs	269	4
Recoveries	37	9
Provision (credit)	233	34
Ending balance	1,283	1,281
Allowance for loan losses, Collectively Evaluated for impairment	1,283	1,281
Loans, Ending balance	287,844	232,928	282,503
Loans, Collectively Evaluated for impairment	287,844	232,928
Consumer Indirect [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	10,715	10,189
Charge-offs	1,718	1,395
Recoveries	805	727
Provision (credit)	1,510	478
Ending balance	11,312	9,999
Allowance for loan losses, Collectively Evaluated for impairment	11,312	9,999
Loans, Ending balance	563,428	485,244	559,964
Loans, Collectively Evaluated for impairment	563,428	485,244
Other Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	512	517
Charge-offs	252	314
Recoveries	137	214
Provision (credit)	29	70
Ending balance	426	487
Allowance for loan losses, Collectively Evaluated for impairment	426	487
Loans, Ending balance	24,581	23,328	26,657
Loans, Collectively Evaluated for impairment	$ 24,581	$ 23,328