Loans and Allowance for Loan Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans (Note 3)	$ 802,048	$ 409,073	$ 398,785
Allowance for loan losses	4,057	4,673	4,577	$ 4,277
Loans, net	797,991	404,400
Agricultural [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans (Note 3)	57,339	49,109	48,464
Allowance for loan losses	471	481	506	433
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans (Note 3)	148,083	91,406	104,386
Allowance for loan losses	655	892	1,001	688
Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans (Note 3)	38,854	24,382	24,513
Allowance for loan losses	270	254	262	305
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans (Note 3)	326,379	139,453	123,487
Allowance for loan losses	1,663	1,926	1,761	1,438
Construction Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans (Note 3)	13,411	8,843	6,613
Allowance for loan losses	76	38	35	62
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans (Note 3)	217,982	95,880	91,322
Allowance for loan losses	$ 640	$ 537	$ 726	$ 1,013

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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

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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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