Loans and Allowance for Loan Losses, Summary of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Summary of loans [Abstract]
Gross loans	$ 601,902	$ 564,577
Less allowance for loan losses	(7,832)	(7,654)	$ (6,873)	$ (5,677)
Less deferred loan fees	(1,992)	(1,576)
Net loans	592,078	555,347
Construction & Development [Member]
Summary of loans [Abstract]
Gross loans	87,267	103,787
Less allowance for loan losses	(1,136)	(1,407)	(1,565)	(847)
1-4 Family Commercial [Member]
Summary of loans [Abstract]
Gross loans	33,278	31,778
Less allowance for loan losses	(433)	(431)	(287)	(245)
Commercial Real Estate - Other [Member]
Summary of loans [Abstract]
Gross loans	156,396	137,534
Less allowance for loan losses	(2,035)	(1,865)	(1,193)	(739)
Total Commercial Real Estate [Member]
Summary of loans [Abstract]
Gross loans	276,941	273,099
Commercial & Industrial [Member]
Summary of loans [Abstract]
Gross loans	248,394	204,976
Less allowance for loan losses	(3,231)	(2,779)	(2,523)	(2,567)
Agricultural [Member]
Summary of loans [Abstract]
Gross loans	62,844	74,871
Less allowance for loan losses	(818)	(1,015)	(1,074)	(986)
Consumer [Member]
Summary of loans [Abstract]
Gross loans	13,723	11,631
Less allowance for loan losses	$ (179)	$ (157)	$ (231)	$ (293)

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.

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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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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