Impaired Loans and Valuation Allowance for Loan Losses (Details 1) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012 Contract
Troubled debt restructurings defaulted
Number of Contracts	5
Recorded Investment	$ 848
Construction and land development [Member]
Troubled debt restructurings defaulted
Number of Contracts	2
Recorded Investment	93
Residential real estate [Member]
Troubled debt restructurings defaulted
Number of Contracts	2
Recorded Investment	530
Commercial real estate [Member]
Troubled debt restructurings defaulted
Number of Contracts	1
Recorded Investment	225
Commercial and financial [Member]
Troubled debt restructurings defaulted
Number of Contracts	0
Recorded Investment	0
Consumer [Member]
Troubled debt restructurings defaulted
Number of Contracts	0
Recorded Investment	$ 0