Impaired Loans and Valuation Allowance for Loan Losses (Details 1) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012 Contract
Troubled debt restructurings defaulted
Number of Contracts	4
Recorded Investment	$ 825
Construction and Land Development [Member]
Troubled debt restructurings defaulted
Number of Contracts	0
Recorded Investment	0
Residential Real Estate [Member]
Troubled debt restructurings defaulted
Number of Contracts	3
Recorded Investment	600
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