Loans (Details 3) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Unpaid Principal Balance
Unpaid Principal Balance	$ 12,853	$ 11,317
Recorded Investment
Recorded Investment	11,704	10,355
Allowance for Loan Losses Allocated
Allowance for Loan Losses Allocated	636	985
Commercial real estate, Owner occupied [Member]
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	2,630	884
Unpaid Principal Balance, With an allowance recorded	3,948	4,653
Recorded Investment
Recorded Investment, With no related allowance recorded	1,901	762
Recorded Investment, With an allowance recorded	3,881	4,169
Allowance for Loan Losses Allocated
Allowance for Loan Losses Allocated, With no related allowance recorded	0	0
Allowance for Loan Losses Allocated, With an allowance recorded	214	309
Commercial real estate, Non-owner occupied [Member]
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	183	430
Unpaid Principal Balance, With an allowance recorded	3,049	2,455
Recorded Investment
Recorded Investment, With no related allowance recorded	91	340
Recorded Investment, With an allowance recorded	2,835	2,456
Allowance for Loan Losses Allocated
Allowance for Loan Losses Allocated, With no related allowance recorded	0	0
Allowance for Loan Losses Allocated, With an allowance recorded	158	439
Commercial real estate, Other[Member]
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded		800
Unpaid Principal Balance, With an allowance recorded		0
Recorded Investment
Recorded Investment, With no related allowance recorded		590
Recorded Investment, With an allowance recorded		0
Allowance for Loan Losses Allocated
Allowance for Loan Losses Allocated, With no related allowance recorded		0
Allowance for Loan Losses Allocated, With an allowance recorded		0
Commercial [Member]
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	1,119	1,122
Unpaid Principal Balance, With an allowance recorded	1,067	278
Recorded Investment
Recorded Investment, With no related allowance recorded	1,069	1,063
Recorded Investment, With an allowance recorded	1,067	278
Allowance for Loan Losses Allocated
Allowance for Loan Losses Allocated, With no related allowance recorded	0	0
Allowance for Loan Losses Allocated, With an allowance recorded	264	237
Residential real estate, 1-4 family residential [Member]
Unpaid Principal Balance
Unpaid Principal Balance, With no related allowance recorded	857	695
Recorded Investment
Recorded Investment, With no related allowance recorded	860	697
Allowance for Loan Losses Allocated
Allowance for Loan Losses Allocated, With no related allowance recorded	0	0
No related allowance [Member]
Unpaid Principal Balance
Unpaid Principal Balance	4,789	3,931
Recorded Investment
Recorded Investment	3,921	3,452
Allowance for Loan Losses Allocated
Allowance for Loan Losses Allocated	0	0
Allowance [Member]
Unpaid Principal Balance
Unpaid Principal Balance	8,064	7,386
Recorded Investment
Recorded Investment	7,783	6,903
Allowance for Loan Losses Allocated
Allowance for Loan Losses Allocated	$ 636	$ 985