Fair Values of Financial Instruments (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Unpaid Principal Balance	$ 2,665	$ 533
Commercial Loan [Member]
Unpaid Principal Balance		106
Consumer Loan [Member]
Unpaid Principal Balance	45	45
Commercial Real Estate [Member]
Unpaid Principal Balance	2,620	382
Fair Value, Inputs, Level 3 [Member]
Unpaid Principal Balance	2,665	533
Fair Value, Inputs, Level 3 [Member] | Commercial Loan [Member]
Unpaid Principal Balance		106
Fair Value, Inputs, Level 3 [Member] | Consumer Loan [Member]
Unpaid Principal Balance	45	45
Fair Value Measurements, Valuation Techniques	Sales comparison approach
Fair Value Measurements Unobservable Inputs	Adjustment for differences between comparable sales
Fair Value, Inputs, Level 3 [Member] | Commercial Real Estate [Member]
Unpaid Principal Balance	$ 2,620	$ 382
Fair Value Measurements, Valuation Techniques	Sales comparison approach/Contractual provision of USDA loan
Fair Value Measurements Unobservable Inputs	Adjustment for differences between comparable sales
Impaired Commercial Real Estate Loan Minimum Interest Rate In Range	10.00%
Impaired Commercial Real Estate Loan Maximum Interest Rate In Range	100.00%
Other Residential Real Estate Owned Loan Interest Rate	10.00%