Loans and Allowance for Loan Losses (Details 4) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012 Loan
Summary of the Number and Volume of TDRs, Recorded in Loan Portfolio
Number of Loans	28
Amount	$ 4,414
Specific Reserves Allocated	173
Commercial [Member]
Summary of the Number and Volume of TDRs, Recorded in Loan Portfolio
Number of Loans	5
Amount	695
Specific Reserves Allocated
Real estate - commercial [Member]
Summary of the Number and Volume of TDRs, Recorded in Loan Portfolio
Number of Loans	6
Amount	2,120
Specific Reserves Allocated	12
Real estate - construction [Member]
Summary of the Number and Volume of TDRs, Recorded in Loan Portfolio
Number of Loans
Amount
Specific Reserves Allocated
Real estate mortgage [Member]
Summary of the Number and Volume of TDRs, Recorded in Loan Portfolio
Number of Loans	17
Amount	1,599
Specific Reserves Allocated	161
Consumer [Member]
Summary of the Number and Volume of TDRs, Recorded in Loan Portfolio
Number of Loans
Amount
Specific Reserves Allocated