Loans (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Loans
Loans	$ 399,722	$ 428,159
% of Total Loans	100.00%	100.00%
Deferred loan fees, net	(586)	(764)
Total gross loans	399,136	427,395
Allowance for credit losses	(10,214)	(11,396)
Total loans	388,922	415,999
Small Business Administration programs
Loans
Real estate and commercial loans	5,289	6,421
Commercial
Loans
Loans	113,077	108,047
% of Total Loans	28.30%	25.30%
Commercial | Commercial and industrial
Loans
Loans	71,439	78,089
% of Total Loans	17.90%	18.30%
Commercial | Agricultural land and production
Loans
Loans	41,638	29,958
% of Total Loans	10.40%	7.00%
Real Estate Portfolio Segment
Loans
Loans	234,185	259,241
% of Total Loans	58.60%	60.40%
Real Estate Portfolio Segment | Owner occupied
Loans
Loans	109,231	113,183
% of Total Loans	27.30%	26.40%
Real Estate Portfolio Segment | Real estate construction and other land loans
Loans
Loans	33,234	33,047
% of Total Loans	8.30%	7.70%
Real Estate Portfolio Segment | Commercial real estate
Loans
Loans	54,146	62,523
% of Total Loans	13.60%	14.60%
Real Estate Portfolio Segment | Agricultural real estate
Loans
Loans	29,408	42,596
% of Total Loans	7.40%	9.90%
Real Estate Portfolio Segment | Other real estate
Loans
Loans	8,166	7,892
% of Total Loans	2.00%	1.80%
Consumer
Loans
Loans	52,460	60,871
% of Total Loans	13.10%	14.30%
Consumer | Equity loans and lines of credit
Loans
Loans	44,335	51,106
% of Total Loans	11.10%	12.00%
Consumer | Consumer and installment
Loans
Loans	$ 8,125	$ 9,765
% of Total Loans	2.00%	2.30%