Loans and Allowance for Loan Losses (Details 1) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Age Analysis of Past Due Loans
30-59 Days Past Due	$ 3,531	$ 3,626
60-89 Days Past Due	1,687	2,489
Greater than 90 Days	21,940	25,200
Total Past Due	27,158	31,315
Current	840,301	811,773
Total Loans	867,459	843,088	830,312
Recorded Investment greater than 90 Days and Accruing
Commercial Real Estate [Member]
Age Analysis of Past Due Loans
30-59 Days Past Due	701	290
60-89 Days Past Due	425	804
Greater than 90 Days	16,435	19,023
Total Past Due	17,561	20,117
Current	380,690	361,735
Total Loans	398,251	381,852	386,891
Recorded Investment greater than 90 Days and Accruing
Commercial [Member]
Age Analysis of Past Due Loans
30-59 Days Past Due	404	54
60-89 Days Past Due	123	249
Greater than 90 Days	491	805
Total Past Due	1,018	1,108
Current	78,443	75,462
Total Loans	79,461	76,570	72,679
Recorded Investment greater than 90 Days and Accruing
Residential Real Estate [Member]
Age Analysis of Past Due Loans
30-59 Days Past Due	506	545
60-89 Days Past Due	608	1,172
Greater than 90 Days	3,579	3,554
Total Past Due	4,693	5,271
Current	60,141	59,253
Total Loans	64,834	64,524	68,837
Recorded Investment greater than 90 Days and Accruing
Home Equity Loans [Member]
Age Analysis of Past Due Loans
30-59 Days Past Due	1,342	1,942
60-89 Days Past Due	272	181
Greater than 90 Days	1,386	1,666
Total Past Due	3,000	3,789
Current	123,568	123,169
Total Loans	126,568	126,958	130,143
Recorded Investment greater than 90 Days and Accruing
Indirect [Member]
Age Analysis of Past Due Loans
30-59 Days Past Due	518	664
60-89 Days Past Due	96	71
Greater than 90 Days	5	124
Total Past Due	619	859
Current	184,273	179,230
Total Loans	184,892	180,089	158,885
Recorded Investment greater than 90 Days and Accruing
Consumer [Member]
Age Analysis of Past Due Loans
30-59 Days Past Due	60	131
60-89 Days Past Due	163	12
Greater than 90 Days	44	28
Total Past Due	267	171
Current	13,186	12,924
Total Loans	13,453	13,095	12,877
Recorded Investment greater than 90 Days and Accruing