Loans and Allowance for Loan Losses (Details 5) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Summary of credit quality indicators by internally assigned grade
Total loans, Average Balance	$ 293,194	$ 289,096
Commercial [Member]
Summary of credit quality indicators by internally assigned grade
Total loans, Average Balance	45,544	60,233
Commercial Real Estate [Member]
Summary of credit quality indicators by internally assigned grade
Total loans, Average Balance	184,490	160,319
Total [Member]
Summary of credit quality indicators by internally assigned grade
Total loans, Average Balance	230,034	220,552
Pass [Member] | Commercial [Member]
Summary of credit quality indicators by internally assigned grade
Total loans, Average Balance	43,521	57,545
Pass [Member] | Commercial Real Estate [Member]
Summary of credit quality indicators by internally assigned grade
Total loans, Average Balance	166,156	142,781
Pass [Member] | Total [Member]
Summary of credit quality indicators by internally assigned grade
Total loans, Average Balance	209,677	200,326
Special Mention [Member] | Commercial [Member]
Summary of credit quality indicators by internally assigned grade
Total loans, Average Balance	1,056	503
Special Mention [Member] | Commercial Real Estate [Member]
Summary of credit quality indicators by internally assigned grade
Total loans, Average Balance	8,935	8,269
Special Mention [Member] | Total [Member]
Summary of credit quality indicators by internally assigned grade
Total loans, Average Balance	9,991	8,772
Substandard [Member] | Commercial [Member]
Summary of credit quality indicators by internally assigned grade
Total loans, Average Balance	967	2,185
Substandard [Member] | Commercial Real Estate [Member]
Summary of credit quality indicators by internally assigned grade
Total loans, Average Balance	9,399	9,269
Substandard [Member] | Total [Member]
Summary of credit quality indicators by internally assigned grade
Total loans, Average Balance	10,366	11,454
Doubtful/Loss [Member] | Commercial [Member]
Summary of credit quality indicators by internally assigned grade
Total loans, Average Balance
Doubtful/Loss [Member] | Commercial Real Estate [Member]
Summary of credit quality indicators by internally assigned grade
Total loans, Average Balance
Doubtful/Loss [Member] | Total [Member]
Summary of credit quality indicators by internally assigned grade
Total loans, Average Balance