Loans and Allowance for Loan Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	$ 369,000	$ 349,304	$ 346,113
Allowance for loan losses	(4,277)	(4,194)	(4,173)	$ (4,735)
Loans, net	364,723	345,110
Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	44,614	40,232	41,098
Allowance for loan losses	(433)	(420)	(186)	(178)
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	96,088	94,347	88,062
Allowance for loan losses	(688)	(586)	(527)	(562)
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	21,596	20,090	20,752
Allowance for loan losses	(305)	(297)	(184)	(192)
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	110,762	97,736	99,807
Allowance for loan losses	(1,438)	(1,030)	(1,641)	(1,842)
Construction Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	6,153	5,390	2,691
Allowance for loan losses	(62)	(46)	(9)	(12)
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	89,787	91,509	93,703
Allowance for loan losses	$ (1,013)	$ (1,388)	$ (1,193)	$ (1,626)

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
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-Publisher FASB
-Name Accounting Standards Codification
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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

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