Loans, Portfolio (Details) (USD $) In Thousands, unless otherwise specified			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Minimum [Member]	Dec. 31, 2012 Maximum [Member]	Dec. 31, 2012 Commercial [Member]	Dec. 31, 2011 Commercial [Member]	Dec. 31, 2012 Commercial [Member] Minimum [Member]	Dec. 31, 2012 Commercial [Member] Maximum [Member]	Dec. 31, 2012 Commercial Real Estate [Member]	Dec. 31, 2011 Commercial Real Estate [Member]	Dec. 31, 2012 Commercial Real Estate [Member] Minimum [Member]	Dec. 31, 2012 Commercial Real Estate [Member] Maximum [Member]	Dec. 31, 2012 Agriculture [Member]	Dec. 31, 2011 Agriculture [Member]	Dec. 31, 2012 Agriculture [Member] Minimum [Member]	Dec. 31, 2012 Agriculture [Member] Maximum [Member]	Dec. 31, 2012 Residential Mortgage [Member]	Dec. 31, 2011 Residential Mortgage [Member]	Dec. 31, 2012 Residential Construction [Member]	Dec. 31, 2011 Residential Construction [Member]	Dec. 31, 2012 Residential Construction [Member] Minimum [Member]	Dec. 31, 2012 Residential Construction [Member] Maximum [Member]	Dec. 31, 2012 Consumer [Member]	Dec. 31, 2011 Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 448,228	$ 442,999			$ 88,810	$ 91,914			$ 188,426	$ 175,793			$ 52,747	$ 52,064			$ 51,266	$ 51,586	$ 7,586	$ 7,492			$ 59,393	$ 64,150
Allowance for loan losses	(8,554)	(10,408)
Net deferred origination fees and costs	775	198
Loans, net	$ 440,449	$ 432,789
Categories of loans									2
General frequency of collateral valuation							3 months	6 months			3 months	6 months			3 months	6 months					3 months	6 months
Loan portfolio by segment (in hundredths)					32.00%				42.00%								11.00%		2.00%				13.00%
Delinquent loans revaluation period			3 years	12 years