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Loans (Details 9) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Residential [Member]
Loans individually evaluated for impairment by portfolio segment of loans
Recorded Investment	$ 647	$ 522
Unpaid Principal Balance	748	547
Related Allowance	70	54
YTD Average Recorded Investment	723	564
YTD Interest Income Recognized	13	36
Residential [Member] | With no related allowance recorded [Member]
Loans individually evaluated for impairment by portfolio segment of loans
Recorded Investment	236	239
Unpaid Principal Balance	236	239
Related Allowance
YTD Average Recorded Investment	269	195
YTD Interest Income Recognized	12	36
Residential [Member] | With a specific allowance recorded [Member]
Loans individually evaluated for impairment by portfolio segment of loans
Recorded Investment	411	283
Unpaid Principal Balance	512	308
Related Allowance	70	54
YTD Average Recorded Investment	454	369
YTD Interest Income Recognized	1
Agricultural Real Estate [Member]
Loans individually evaluated for impairment by portfolio segment of loans
Recorded Investment
Unpaid Principal Balance
Related Allowance
YTD Average Recorded Investment		180
YTD Interest Income Recognized		15
Agricultural Real Estate [Member] | With no related allowance recorded [Member]
Loans individually evaluated for impairment by portfolio segment of loans
Recorded Investment
Unpaid Principal Balance
Related Allowance
YTD Average Recorded Investment		180
YTD Interest Income Recognized		15
Agricultural Real Estate [Member] | With a specific allowance recorded [Member]
Loans individually evaluated for impairment by portfolio segment of loans
Recorded Investment
Unpaid Principal Balance
Related Allowance
YTD Average Recorded Investment
YTD Interest Income Recognized
Agricultural [Member]
Loans individually evaluated for impairment by portfolio segment of loans
Recorded Investment
Unpaid Principal Balance
Related Allowance
YTD Average Recorded Investment		2,683
YTD Interest Income Recognized		1,156
Agricultural [Member] | With no related allowance recorded [Member]
Loans individually evaluated for impairment by portfolio segment of loans
Recorded Investment
Unpaid Principal Balance
Related Allowance
YTD Average Recorded Investment		2,683
YTD Interest Income Recognized		1,156
Agricultural [Member] | With a specific allowance recorded [Member]
Loans individually evaluated for impairment by portfolio segment of loans
Recorded Investment
Unpaid Principal Balance
Related Allowance
YTD Average Recorded Investment
YTD Interest Income Recognized
Commercial Real Estate [Member]
Loans individually evaluated for impairment by portfolio segment of loans
Recorded Investment	877	911
Unpaid Principal Balance	1,300	1,238
Related Allowance	25	29
YTD Average Recorded Investment	863	1,545
YTD Interest Income Recognized		22
Commercial Real Estate [Member] | With no related allowance recorded [Member]
Loans individually evaluated for impairment by portfolio segment of loans
Recorded Investment	207	207
Unpaid Principal Balance	384	384
Related Allowance
YTD Average Recorded Investment	206	1,357
YTD Interest Income Recognized		22
Commercial Real Estate [Member] | With a specific allowance recorded [Member]
Loans individually evaluated for impairment by portfolio segment of loans
Recorded Investment	670	704
Unpaid Principal Balance	916	854
Related Allowance	25	29
YTD Average Recorded Investment	657	188
Commercial [Member]
Loans individually evaluated for impairment by portfolio segment of loans
Recorded Investment	3,067	420
Unpaid Principal Balance	3,114	420
Related Allowance	770	91
YTD Average Recorded Investment	1,848	493
YTD Interest Income Recognized	13	1
Commercial [Member] | With no related allowance recorded [Member]
Loans individually evaluated for impairment by portfolio segment of loans
Recorded Investment	287
Unpaid Principal Balance	334
Related Allowance
YTD Average Recorded Investment	212	55
YTD Interest Income Recognized		1
Commercial [Member] | With a specific allowance recorded [Member]
Loans individually evaluated for impairment by portfolio segment of loans
Recorded Investment	2,780	420
Unpaid Principal Balance	2,780	420
Related Allowance	770	91
YTD Average Recorded Investment	1,636	438
YTD Interest Income Recognized	13
Consumer [Member]
Loans individually evaluated for impairment by portfolio segment of loans
Recorded Investment
Unpaid Principal Balance
Related Allowance
YTD Average Recorded Investment	2	1
YTD Interest Income Recognized
Consumer [Member] | With no related allowance recorded [Member]
Loans individually evaluated for impairment by portfolio segment of loans
Recorded Investment
Unpaid Principal Balance
Related Allowance
YTD Average Recorded Investment		1
YTD Interest Income Recognized
Consumer [Member] | With a specific allowance recorded [Member]
Loans individually evaluated for impairment by portfolio segment of loans
Recorded Investment
Unpaid Principal Balance
Related Allowance
YTD Average Recorded Investment	2
YTD Interest Income Recognized

X

- Definition

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

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- Definition

Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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- Definition

Impaired financing receivable recorded investment during period.

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- Definition

Impaired financing receivable related allowance during period.

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- Definition

Impaired financing receivable unpaid principal balance during period.

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