Loans and the Allowance for Loan Losses (Aging Analysis) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 982	$ 3,658
60-89 Days Past Due	312	6,978
Greater Than 90 Days	4,969	7,900
Total Past Due	6,263	18,536
Current	801,028	737,457
Total Loans Receivable	807,291	755,993
Loans Receivable >90 Days And Accruing	1,026	1,029
Commercial and industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	155	137
60-89 Days Past Due		1,544
Greater Than 90 Days	233	125
Total Past Due	388	1,806
Current	167,749	144,905
Total Loans Receivable	168,137	146,711
Commercial real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	543	1,331
60-89 Days Past Due		5,335
Greater Than 90 Days	1,434	1,254
Total Past Due	1,977	7,920
Current	446,647	400,244
Total Loans Receivable	448,624	408,164
Loans Receivable >90 Days And Accruing	1,026	1,029
Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Greater Than 90 Days		3,044
Total Past Due		3,044
Current	33,521	36,344
Total Loans Receivable	33,521	39,388
Residential mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	279	2,174
60-89 Days Past Due	312	99
Greater Than 90 Days	3,302	3,477
Total Past Due	3,893	5,750
Current	152,771	155,021
Total Loans Receivable	156,664	160,771
Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	5	16
Total Past Due	5	16
Current	340	943
Total Loans Receivable	$ 345	$ 959