Loans and Allowance for Loan Losses (Details 6) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Summary of Loans Individually Evaluated for Impairment by Class of Loans
Unpaid Principal Balance, Total	$ 9,619	$ 10,657
Recorded investment, total	8,989	9,881
Allowance for Loan Losses Allocated, With an allowance recorded	758	984
Commercial [Member]
Summary of Loans Individually Evaluated for Impairment by Class of Loans
Unpaid Principal Balance, With no related allowance recorded	492	135
Unpaid Principal Balance, With an allowance recorded	482	804
Recorded investment, with no related allowance recorded	492	135
Recorded investment, with related allowance recorded	423	744
Allowance for Loan Losses Allocated, With an allowance recorded	37	26
Real estate - commercial [Member]
Summary of Loans Individually Evaluated for Impairment by Class of Loans
Unpaid Principal Balance, With no related allowance recorded	2,599	2,808
Unpaid Principal Balance, With an allowance recorded	1,590	1,434
Recorded investment, with no related allowance recorded	2,194	2,649
Recorded investment, with related allowance recorded	1,561	1,403
Allowance for Loan Losses Allocated, With an allowance recorded	122	490
Real estate - construction [Member]
Summary of Loans Individually Evaluated for Impairment by Class of Loans
Unpaid Principal Balance, With no related allowance recorded	80	244
Unpaid Principal Balance, With an allowance recorded	188
Recorded investment, with no related allowance recorded	80	232
Recorded investment, with related allowance recorded	188
Allowance for Loan Losses Allocated, With an allowance recorded	161
Consumer [Member]
Summary of Loans Individually Evaluated for Impairment by Class of Loans
Unpaid Principal Balance, With no related allowance recorded	16	29
Unpaid Principal Balance, With an allowance recorded
Recorded investment, with no related allowance recorded	16	29
Recorded investment, with related allowance recorded
Allowance for Loan Losses Allocated, With an allowance recorded
Real estate mortgage [Member]
Summary of Loans Individually Evaluated for Impairment by Class of Loans
Unpaid Principal Balance, With no related allowance recorded	1,835	2,999
Unpaid Principal Balance, With an allowance recorded	2,337	2,204
Recorded investment, with no related allowance recorded	1,698	2,485
Recorded investment, with related allowance recorded	2,337	2,204
Allowance for Loan Losses Allocated, With an allowance recorded	$ 438	$ 468