Loans and Allowance for Loan Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	$ 409,073	$ 398,785	$ 369,000
Allowance for loan losses	(4,673)	(4,577)	(4,277)	$ (4,194)
Loans, net	404,400	394,208
Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	49,109	48,464	44,614
Allowance for loan losses	(481)	(506)	(433)	(420)
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	91,406	104,386	96,088
Allowance for loan losses	(892)	(1,001)	(688)	(586)
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	24,382	24,513	21,596
Allowance for loan losses	(254)	(262)	(305)	(297)
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	139,453	123,487	110,762
Allowance for loan losses	(1,926)	(1,761)	(1,438)	(1,030)
Construction Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	8,843	6,613	6,153
Allowance for loan losses	(38)	(35)	(62)	(46)
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	95,880	91,322	89,787
Allowance for loan losses	$ (537)	$ (726)	$ (1,013)	$ (1,388)

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- Definition

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

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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.

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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.

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