Loans and Allowance for Loan Losses, Summary of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Summary of loans [Abstract]
Gross loans	$ 936,103		$ 839,088
Less allowance for loan losses	(12,306)	$ (10,864)	(9,639)	$ (9,878)	$ (8,513)	$ (7,846)
Less deferred loan fees	(4,110)		(2,475)
Net loans	919,687		826,974
PPP Loans [Member]
Summary of loans [Abstract]
Gross loans	47,500
Construction & Development [Member]
Summary of loans [Abstract]
Gross loans	124,106		107,855
Less allowance for loan losses	(1,631)	(1,367)	(1,239)	(1,086)	(944)	(782)
1 - 4 Family Real Estate [Member]
Summary of loans [Abstract]
Gross loans	34,089		29,079
Less allowance for loan losses	(448)	(433)	(334)	(349)	(376)	(378)
Commercial Real Estate - Other [Member]
Summary of loans [Abstract]
Gross loans	312,532		290,489
Less allowance for loan losses	(4,109)	(3,877)	(3,337)	(3,358)	(3,032)	(3,025)
Commercial Real Estate [Member]
Summary of loans [Abstract]
Gross loans	470,727		427,423
Commercial & Industrial [Member]
Summary of loans [Abstract]
Gross loans	394,766		351,248
Less allowance for loan losses	(5,189)	(4,543)	(4,035)	(4,380)	(3,495)	(2,887)
Commercial & Industrial [Member] | PPP Loans [Member]
Summary of loans [Abstract]
Gross loans	47,500		44,900
Agricultural [Member]
Summary of loans [Abstract]
Gross loans	62,722		50,519
Less allowance for loan losses	(825)	(532)	(580)	(579)	(551)	(642)
Consumer [Member]
Summary of loans [Abstract]
Gross loans	7,888		9,898
Less allowance for loan losses	$ (104)	$ (112)	$ (114)	$ (126)	$ (115)	$ (132)