Loans and Allowance for Loan Losses, Activity in Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Activity in allowance for loan losses [Roll Forward]
Balance, beginning of period				$ 9,639				$ 7,846	$ 9,639	$ 7,846	$ 7,832
Charge-offs									(3,818)	(3,590)	(18)
Recoveries									320	33	32
Net (charge-offs) recoveries									(3,498)	(3,557)	14
Provision (credit) for loan losses	$ 850	$ 750	$ 1,300	1,275	$ 2,050	$ 1,250	$ 1,400	650	4,175	5,350	0
Balance, end of period	10,316				9,639				10,316	9,639	7,846
Allowance Balance [Abstract]
Ending balance, individually evaluated for impairment	253				177				253	177
Ending balance, collectively evaluated for impairment	10,063				9,462				10,063	9,462
Total	10,316				9,639				10,316	9,639	7,846
Gross Loans [Abstract]
Ending balance, individually evaluated for impairment	23,854				23,123				23,854	23,123
Ending balance, collectively evaluated for impairment	1,007,124				815,965				1,007,124	815,965
Total	1,030,978				839,088				1,030,978	839,088
Construction & Development [Member]
Activity in allowance for loan losses [Roll Forward]
Balance, beginning of period				1,239				782	1,239	782	1,136
Charge-offs									0	0	0
Recoveries									0	0	0
Net (charge-offs) recoveries									0	0	0
Provision (credit) for loan losses									456	457	(354)
Balance, end of period	1,695				1,239				1,695	1,239	782
Allowance Balance [Abstract]
Ending balance, individually evaluated for impairment	0				0				0	0
Ending balance, collectively evaluated for impairment	1,695				1,239				1,695	1,239
Total	1,695				1,239				1,695	1,239	782
Gross Loans [Abstract]
Ending balance, individually evaluated for impairment	0				0				0	0
Ending balance, collectively evaluated for impairment	169,322				107,855				169,322	107,855
Total	169,322				107,855				169,322	107,855
1 - 4 Family Real Estate [Member]
Activity in allowance for loan losses [Roll Forward]
Balance, beginning of period				334				378	334	378	433
Charge-offs									0	0	(2)
Recoveries									0	2	5
Net (charge-offs) recoveries									0	2	3
Provision (credit) for loan losses									296	(46)	(58)
Balance, end of period	630				334				630	334	378
Allowance Balance [Abstract]
Ending balance, individually evaluated for impairment	0				0				0	0
Ending balance, collectively evaluated for impairment	630				334				630	334
Total	630				334				630	334	378
Gross Loans [Abstract]
Ending balance, individually evaluated for impairment	0				0				0	0
Ending balance, collectively evaluated for impairment	62,971				29,079				62,971	29,079
Total	62,971				29,079				62,971	29,079
Commercial Real Estate - Other [Member]
Activity in allowance for loan losses [Roll Forward]
Balance, beginning of period				3,337				3,025	3,337	3,025	2,035
Charge-offs									0	0	0
Recoveries									0	0	0
Net (charge-offs) recoveries									0	0	0
Provision (credit) for loan losses									62	312	990
Balance, end of period	3,399				3,337				3,399	3,337	3,025
Allowance Balance [Abstract]
Ending balance, individually evaluated for impairment	0				0				0	0
Ending balance, collectively evaluated for impairment	3,399				3,337				3,399	3,337
Total	3,399				3,337				3,399	3,337	3,025
Gross Loans [Abstract]
Ending balance, individually evaluated for impairment	14,481				8,054				14,481	8,054
Ending balance, collectively evaluated for impairment	325,174				282,435				325,174	282,435
Total	339,655				290,489				339,655	290,489
Commercial & Industrial [Member]
Activity in allowance for loan losses [Roll Forward]
Balance, beginning of period				4,035				2,887	4,035	2,887	3,231
Charge-offs									(3,750)	(3,289)	(4)
Recoveries									16	18	24
Net (charge-offs) recoveries									(3,734)	(3,271)	20
Provision (credit) for loan losses									3,320	4,419	(364)
Balance, end of period	3,621				4,035				3,621	4,035	2,887
Allowance Balance [Abstract]
Ending balance, individually evaluated for impairment	253				177				253	177
Ending balance, collectively evaluated for impairment	3,368				3,858				3,368	3,858
Total	3,621				4,035				3,621	4,035	2,887
Gross Loans [Abstract]
Ending balance, individually evaluated for impairment	9,354				14,601				9,354	14,601
Ending balance, collectively evaluated for impairment	352,620				336,647				352,620	336,647
Total	361,974				351,248				361,974	351,248
Agricultural [Member]
Activity in allowance for loan losses [Roll Forward]
Balance, beginning of period				580				642	580	642	818
Charge-offs									0	(300)	(11)
Recoveries									300	10	3
Net (charge-offs) recoveries									300	(290)	(8)
Provision (credit) for loan losses									(150)	228	(168)
Balance, end of period	730				580				730	580	642
Allowance Balance [Abstract]
Ending balance, individually evaluated for impairment	0				0				0	0
Ending balance, collectively evaluated for impairment	730				580				730	580
Total	730				580				730	580	642
Gross Loans [Abstract]
Ending balance, individually evaluated for impairment	0				468				0	468
Ending balance, collectively evaluated for impairment	73,010				50,051				73,010	50,051
Total	73,010				50,519				73,010	50,519
Consumer [Member]
Activity in allowance for loan losses [Roll Forward]
Balance, beginning of period				$ 114				$ 132	114	132	179
Charge-offs									(68)	(1)	(1)
Recoveries									4	3	0
Net (charge-offs) recoveries									(64)	2	(1)
Provision (credit) for loan losses									191	(20)	(46)
Balance, end of period	241				114				241	114	132
Allowance Balance [Abstract]
Ending balance, individually evaluated for impairment	0				0				0	0
Ending balance, collectively evaluated for impairment	241				114				241	114
Total	241				114				241	114	$ 132
Gross Loans [Abstract]
Ending balance, individually evaluated for impairment	19				0				19	0
Ending balance, collectively evaluated for impairment	24,027				9,898				24,027	9,898
Total	$ 24,046				$ 9,898				$ 24,046	$ 9,898