Loans (Allowance For Loan And Lease Loss, By Loan Category) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended			3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 Commercial And Industrial [Member]	Sep. 30, 2011 Commercial And Industrial [Member]	Sep. 30, 2012 Commercial And Industrial [Member]	Sep. 30, 2011 Commercial And Industrial [Member]	Sep. 30, 2012 Commercial Real Estate [Member]	Sep. 30, 2011 Commercial Real Estate [Member]	Sep. 30, 2012 Commercial Real Estate [Member]	Sep. 30, 2011 Commercial Real Estate [Member]	Sep. 30, 2011 Residential Real Estate [Member]	Sep. 30, 2011 Residential Real Estate [Member]	Sep. 30, 2012 Residential Real Estate [Member]	Dec. 31, 2011 Residential Real Estate [Member]	Sep. 30, 2012 Consumer [Member]	Sep. 30, 2011 Consumer [Member]	Sep. 30, 2012 Consumer [Member]	Sep. 30, 2011 Consumer [Member]	Sep. 30, 2012 Overdrafts [Member]	Sep. 30, 2011 Overdrafts [Member]	Sep. 30, 2012 Overdrafts [Member]	Sep. 30, 2011 Overdrafts [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	$ 4,323	$ 2,986	$ 4,280	$ 1,766			$ 748				$ 3,370				$ 152	$ 133			$ 29
Charge-offs	171	1,059	959	1,370	51	312	51	312	119	723	900	973	21	71				(1)		3	1	4	8	11
Recoveries	3	25	24	76		25		67			19	8					3		3				2	1
Net charge-offs	168	1,034	935	1,294
Provision for loan and lease losses	476	1,620	1,383	3,100
Less: Amount for unfunded commitments	27	(151)	(70)	(151)
Balance at end of period	$ 4,658	$ 3,421	$ 4,658	$ 3,421	$ 1,115		$ 1,115		$ 3,365		$ 3,365				$ 152	$ 133	$ 26		$ 26