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Loans (Details 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012
Commercial real estate [Member]
Distribution of fixed rate loans and variable rate loans by major loan category
Distribution of fixed rate loans by major loan category, Fixed Rate	$ 118,823
Distribution of variable rate loans by major loan category, Variable Rate	80,033
Agricultural real estate [Member]
Distribution of fixed rate loans and variable rate loans by major loan category
Distribution of fixed rate loans by major loan category, Fixed Rate	22,198
Distribution of variable rate loans by major loan category, Variable Rate	10,023
Consumer real estate [Member]
Distribution of fixed rate loans and variable rate loans by major loan category
Distribution of fixed rate loans by major loan category, Fixed Rate	68,836
Distribution of variable rate loans by major loan category, Variable Rate	12,205
Commercial/Industrial [Member]
Distribution of fixed rate loans and variable rate loans by major loan category
Distribution of fixed rate loans by major loan category, Fixed Rate	77,469
Distribution of variable rate loans by major loan category, Variable Rate	22,657
Agricultural [Member]
Distribution of fixed rate loans and variable rate loans by major loan category
Distribution of fixed rate loans by major loan category, Fixed Rate	52,395
Distribution of variable rate loans by major loan category, Variable Rate	4,186
Consumer [Member]
Distribution of fixed rate loans and variable rate loans by major loan category
Distribution of fixed rate loans by major loan category, Fixed Rate	20,409
Distribution of variable rate loans by major loan category, Variable Rate	643
Industrial Development Bonds [Member]
Distribution of fixed rate loans and variable rate loans by major loan category
Distribution of fixed rate loans by major loan category, Fixed Rate	1,427
Distribution of variable rate loans by major loan category, Variable Rate	$ 0

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Reflects the carrying amount of loans charging borrowers fixed rates of interest.

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Reflects the carrying amount of loans charging borrowers variable, or adjustable, rates of interest.

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