Loans, Impaired Financing Receivable (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	$ 10,773		$ 10,773		$ 11,265
Recorded Investment With No Allowance	6,751		6,751		8,239
Recorded Investment With Allowance	1,408		1,408		583
Total Recorded Investment	8,159		8,159		8,822
Related Allowance	274		274		98
Average Recorded Investment	8,691	$ 9,998	8,878	$ 10,388
Interest Income Recognized	46	34	87	96
Interest Income Recognized Cash Basis	7	0	8	0
Real Estate Loans [Member] \| Mortgages [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	305		305		222
Recorded Investment With No Allowance	118		118		125
Recorded Investment With Allowance	152		152		66
Total Recorded Investment	270		270		191
Related Allowance	29		29		13
Average Recorded Investment	259	200	224	202
Interest Income Recognized	2	2	4	4
Interest Income Recognized Cash Basis	5	0	5	0
Real Estate Loans [Member] \| Home Equity [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	63		63		130
Recorded Investment With No Allowance	0		0		60
Recorded Investment With Allowance	63		63		65
Total Recorded Investment	63		63		125
Related Allowance	12		12		12
Average Recorded Investment	103	131	114	132
Interest Income Recognized	1	1	2	2
Interest Income Recognized Cash Basis	0	0	0	0
Real Estate Loans [Member] \| Commercial [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	8,051		8,051		8,433
Recorded Investment With No Allowance	5,469		5,469		5,708
Recorded Investment With Allowance	109		109		404
Total Recorded Investment	5,578		5,578		6,112
Related Allowance	48		48		72
Average Recorded Investment	5,700	7,544	5,862	8,039
Interest Income Recognized	19	18	32	44
Interest Income Recognized Cash Basis	0	0	0	0
Real Estate Loans [Member] \| Agricultural [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	0		0		0
Recorded Investment With No Allowance	0		0		0
Recorded Investment With Allowance	0		0		0
Total Recorded Investment	0		0		0
Related Allowance	0		0		0
Average Recorded Investment			0	0
Interest Income Recognized			0	0
Interest Income Recognized Cash Basis			0	0
Real Estate Loans [Member] \| Construction [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	0		0		0
Recorded Investment With No Allowance	0		0		0
Recorded Investment With Allowance	0		0		0
Total Recorded Investment	0		0		0
Related Allowance	0		0		0
Average Recorded Investment			0	0
Interest Income Recognized			0	0
Interest Income Recognized Cash Basis			0	0
Consumer [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	0		0		0
Recorded Investment With No Allowance	0		0		0
Recorded Investment With Allowance	0		0		0
Total Recorded Investment	0		0		0
Related Allowance	0		0		0
Average Recorded Investment	0	15	0	15
Interest Income Recognized	0	0	0	0
Interest Income Recognized Cash Basis	0	0	0	0
Other Commercial Loans [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	2,354		2,354		2,480
Recorded Investment With No Allowance	1,164		1,164		2,346
Recorded Investment With Allowance	1,084		1,084		48
Total Recorded Investment	2,248		2,248		2,394
Related Allowance	185		185		1
Average Recorded Investment	2,629	2,108	2,678	2,000
Interest Income Recognized	24	13	49	46
Interest Income Recognized Cash Basis	2	0	3	0
Other Commercial Loans [Member] \| Agricultural [Member]
Impaired Financing Receivable [Abstract]
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Interest Income Recognized Cash Basis	0	0
Other Commercial Loans [Member] \| Construction [Member]
Impaired Financing Receivable [Abstract]
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Interest Income Recognized Cash Basis	0	0
Other Agricultural Loans [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	0		0		0
Recorded Investment With No Allowance	0		0		0
Recorded Investment With Allowance	0		0		0
Total Recorded Investment	0		0		0
Related Allowance	0		0		0
Average Recorded Investment	0	0	0	0
Interest Income Recognized	0	0	0	0
Interest Income Recognized Cash Basis	0	0	0	0
State and Political Subdivision Loans [Member]
Impaired Financing Receivable [Abstract]
Unpaid Principal Balance	0		0		0
Recorded Investment With No Allowance	0		0		0
Recorded Investment With Allowance	0		0		0
Total Recorded Investment	0		0		0
Related Allowance	0		0		$ 0
Average Recorded Investment	0	0	0	0
Interest Income Recognized	0	0	0	0
Interest Income Recognized Cash Basis	$ 0	$ 0	$ 0	$ 0

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5258-111524

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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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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953550-111524

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Amount of allowance for credit losses related to recorded investment.

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Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

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Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

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Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

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