Note 3 - Loans and Allowance for Credit Losses - Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Jun. 30, 2023
Balance	$ 7,724	$ 7,160
Provision for expected credit losses	40	410
Charge-offs	(106)	(78)
Recoveries	72	54
Balance	7,782	7,546	$ 7,782
Individually evaluated for impairment				$ 0
Total ending allowance balance	7,782	7,546	7,782	7,724
Loans individually evaluated for impairment				405
Total ending loans balance	717,921		717,921	711,960
Financial Asset Acquired [Member]
Acquired loans collectively evaluated for impairment				114
Loans collectively evaluated for impairment				31,843
Financial Asset Originated [Member]
Acquired loans collectively evaluated for impairment				7,610
Loans collectively evaluated for impairment				679,712
Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance	52
Total ending allowance balance				52
Commercial & Industrial [Member]
Balance	1,308
Provision for expected credit losses	121
Charge-offs	0
Recoveries	0
Balance	974		974
Total ending allowance balance	974		974	1,308
Commercial & Industrial [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance	(455)
Total ending allowance balance				(455)
Commercial Real Estate Portfolio Segment [Member]
Balance	3,943	3,927
Provision for expected credit losses	61	145
Charge-offs	0	0
Recoveries	0	0
Balance	3,951	4,072	3,951
Individually evaluated for impairment				0
Total ending allowance balance	3,951	4,072	3,951	3,943
Loans individually evaluated for impairment				88
Total ending loans balance				342,701
Commercial Real Estate Portfolio Segment [Member] | Financial Asset Acquired [Member]
Acquired loans collectively evaluated for impairment				40
Loans collectively evaluated for impairment				6,953
Commercial Real Estate Portfolio Segment [Member] | Financial Asset Originated [Member]
Acquired loans collectively evaluated for impairment				3,903
Loans collectively evaluated for impairment				335,660
Commercial Real Estate Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance	(53)
Total ending allowance balance				(53)
Farmland [Member]
Balance	0
Provision for expected credit losses	(2)
Charge-offs	0
Recoveries	0
Balance	91		91
Total ending allowance balance	91		91	0
Total ending loans balance	40,509		40,509
Farmland [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance	93
Total ending allowance balance				93
Land Development [Member]
Balance	0
Provision for expected credit losses	(132)
Charge-offs	0
Recoveries	0
Balance	266		266
Total ending allowance balance	266		266	0
Total ending loans balance	9,373		9,373
Land Development [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance	398
Total ending allowance balance				398
Residential Portfolio Segment [Member]
Balance	1,571	1,645
Provision for expected credit losses	(99)	35
Charge-offs	0	(6)	0
Recoveries	0	2
Balance	1,638	1,676	1,638
Individually evaluated for impairment				0
Total ending allowance balance	1,638	1,676	1,638	1,571
Loans individually evaluated for impairment				3
Total ending loans balance	190,563		190,563	190,839
Residential Portfolio Segment [Member] | Financial Asset Acquired [Member]
Acquired loans collectively evaluated for impairment				74
Loans collectively evaluated for impairment				23,038
Residential Portfolio Segment [Member] | Financial Asset Originated [Member]
Acquired loans collectively evaluated for impairment				1,497
Loans collectively evaluated for impairment				167,798
Residential Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance	166
Total ending allowance balance				166
Consumer Portfolio Segment [Member]
Balance	902	628
Provision for expected credit losses	91	169
Charge-offs	(106)	(72)	(106)
Recoveries	72	52
Balance	862	777	862
Individually evaluated for impairment				0
Total ending allowance balance	862	777	862	902
Loans individually evaluated for impairment				0
Total ending loans balance	68,726		68,726	65,594
Consumer Portfolio Segment [Member] | Financial Asset Acquired [Member]
Acquired loans collectively evaluated for impairment				0
Loans collectively evaluated for impairment				1,230
Consumer Portfolio Segment [Member] | Financial Asset Originated [Member]
Acquired loans collectively evaluated for impairment				902
Loans collectively evaluated for impairment				64,364
Consumer Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance	(97)
Total ending allowance balance				(97)
Commercial Portfolio Segment [Member]
Balance	1,308	960
Provision for expected credit losses		61
Charge-offs	0	0
Recoveries		0
Balance		1,021
Individually evaluated for impairment				0
Total ending allowance balance		$ 1,021		1,308
Loans individually evaluated for impairment				314
Total ending loans balance	$ 111,308		$ 111,308	112,826
Commercial Portfolio Segment [Member] | Financial Asset Acquired [Member]
Acquired loans collectively evaluated for impairment				0
Loans collectively evaluated for impairment				622
Commercial Portfolio Segment [Member] | Financial Asset Originated [Member]
Acquired loans collectively evaluated for impairment				1,308
Loans collectively evaluated for impairment				$ 111,890