Loans and Allowance for Loan and Lease Losses (Loan Portfolio Summarized By The Past Due Status) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	$ 5,044	$ 2,501
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	3,475	6,016
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	9,620	9,214
Total Past Due	18,139	17,731
Financing Receivable, Recorded Investment, Current	477,057	466,489
Total Loans	495,196	484,220	488,670
Commercial and industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	463	123
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due		361
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	211	234
Total Past Due	674	718
Financing Receivable, Recorded Investment, Current	82,805	77,165
Total Loans	83,479	77,883	77,481
Commercial real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	3,115	1,785
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	3,379	5,618
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	8,735	8,248
Total Past Due	15,229	15,651
Financing Receivable, Recorded Investment, Current	270,644	269,216
Total Loans	285,873	284,867	297,373
Commercial real estate - construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	54	54
Total Past Due	54	54
Financing Receivable, Recorded Investment, Current	35,224	33,177
Total Loans	35,278	33,231	30,304
Lease financing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	38	1
Total Past Due	38	1
Financing Receivable, Recorded Investment, Current	1,218	1,304
Total Loans	1,256	1,305	1,724
Residential mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	1,291	495
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	96	35
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	473	531
Total Past Due	1,860	1,061
Financing Receivable, Recorded Investment, Current	57,499	56,394
Total Loans	59,359	57,455	49,778
Home equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	121	96
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	147	147
Total Past Due	268	243
Financing Receivable, Recorded Investment, Current	22,532	22,677
Total Loans	22,800	22,920	24,115
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	16	1
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due		2
Total Past Due	16	3
Financing Receivable, Recorded Investment, Current	7,135	6,556
Total Loans	$ 7,151	$ 6,559	$ 7,895