Disclosures about Fair Value of Assets and Liabilities (Details 2) (Significant Unobservable Inputs (Level 3), Fair Value measured on a Non-Recurring Basis, USD $) In Thousands, unless otherwise specified			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Impaired loans
Collateral-dependent impaired loans	$ 2,437	$ 3,468	$ 2,437
Foreclosed assets	$ 16	$ 1,283	$ 16
Valuation Technique			Market comparable properties
Unobservable Input			Selling Cost
Range (Weighted Average)			10%