Loans and Allowance for Loan and Lease Losses (Details 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Credit risk profile of loan portfolio based on rating category and payment activity
Total	$ 314,068	$ 317,087
Commercial Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	103,428	100,126
Residential Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	164,879	164,420
Construction Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	15,717	17,980
Commercial Loans and Leases [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	26,522	30,961
Municipal Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	1,179	740
Consumer Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	2,343	2,860
Pass (Grades 1-5) [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	284,449	283,801
Pass (Grades 1-5) [Member] | Commercial Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	86,915	82,701
Pass (Grades 1-5) [Member] | Residential Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	158,121	156,783
Pass (Grades 1-5) [Member] | Construction Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	10,830	12,204
Pass (Grades 1-5) [Member] | Commercial Loans and Leases [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	25,110	28,513
Pass (Grades 1-5) [Member] | Municipal Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	1,179	740
Pass (Grades 1-5) [Member] | Consumer Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	2,294	2,860
Watch (Grade 6) [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	4,759	11,767
Watch (Grade 6) [Member] | Commercial Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	4,660	7,257
Watch (Grade 6) [Member] | Residential Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	83	1,100
Watch (Grade 6) [Member] | Construction Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total		2,210
Watch (Grade 6) [Member] | Commercial Loans and Leases [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	16	1,200
Watch (Grade 6) [Member] | Municipal Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total
Watch (Grade 6) [Member] | Consumer Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total
Special Mention (Grade 7) [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	6,188	5,580
Special Mention (Grade 7) [Member] | Commercial Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	6,034	5,037
Special Mention (Grade 7) [Member] | Residential Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total		90
Special Mention (Grade 7) [Member] | Construction Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total		135
Special Mention (Grade 7) [Member] | Commercial Loans and Leases [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	154	318
Special Mention (Grade 7) [Member] | Municipal Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total
Special Mention (Grade 7) [Member] | Consumer Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total
Substandard (Grade 8) [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	10,304	7,357
Substandard (Grade 8) [Member] | Commercial Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	5,198	5,131
Substandard (Grade 8) [Member] | Residential Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	2,672	1,940
Substandard (Grade 8) [Member] | Construction Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	2,345
Substandard (Grade 8) [Member] | Commercial Loans and Leases [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	89	286
Substandard (Grade 8) [Member] | Municipal Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total
Substandard (Grade 8) [Member] | Consumer Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total
Doubtful (Grade 9) [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	8,368	8,582
Doubtful (Grade 9) [Member] | Commercial Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	621
Doubtful (Grade 9) [Member] | Residential Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	4,003	4,507
Doubtful (Grade 9) [Member] | Construction Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	2,542	3,431
Doubtful (Grade 9) [Member] | Commercial Loans and Leases [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	1,153	644
Doubtful (Grade 9) [Member] | Municipal Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total
Doubtful (Grade 9) [Member] | Consumer Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total	49
Loss (Grade 10) [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total
Loss (Grade 10) [Member] | Commercial Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total
Loss (Grade 10) [Member] | Residential Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total
Loss (Grade 10) [Member] | Construction Real Estate Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total
Loss (Grade 10) [Member] | Commercial Loans and Leases [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total
Loss (Grade 10) [Member] | Municipal Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total
Loss (Grade 10) [Member] | Consumer Loans [Member]
Credit risk profile of loan portfolio based on rating category and payment activity
Total