Loans and Allowance for Loan and Lease Losses (Average Recorded Investment Of Impaired Loans And Related Interest Income By Loan Portfolio Class) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Commercial and industrial [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Average Recorded Investment	$ 35	$ 99	$ 35	$ 99
Impaired Loans with Allowance: Average Recorded Investment	205	1,189	205	1,189
Impaired Financing Receivable, Average Recorded Investment, Total	240	1,288	240	1,288
Commercial real estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Average Recorded Investment	4,891	5,755	4,930	5,755
Impaired Loans with No Allowance: Interest Income Recognized	47		64
Impaired Loans with Allowance: Average Recorded Investment	9,136	2,797	9,150	2,797
Impaired Financing Receivable, Average Recorded Investment, Total	14,027	8,552	14,080	8,552
Impaired Financing Receivable, Interest Income Recognized, Total	47		64
Commercial real estate - construction [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Average Recorded Investment		129		129
Impaired Loans with Allowance: Average Recorded Investment	54		54
Impaired Financing Receivable, Average Recorded Investment, Total	54	129	54	129
Residential mortgage [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with Allowance: Average Recorded Investment	84	17	111	17
Impaired Financing Receivable, Average Recorded Investment, Total	84	17	111	17
Home equity [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with No Allowance: Average Recorded Investment	122	249	122	249
Impaired Loans with Allowance: Average Recorded Investment	55	89	55	89
Impaired Financing Receivable, Average Recorded Investment, Total	177	338	177	338
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Impaired Loans with Allowance: Average Recorded Investment		585		585
Impaired Financing Receivable, Average Recorded Investment, Total		$ 585		$ 585