Note 3 - Loans and Allowance for Credit Losses - Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Jun. 30, 2024
Balance	$ 7,948	$ 7,782	$ 7,930	$ 7,724	$ 7,724
Provision for expected credit losses	85	325	162	365
Charge-offs	(220)	(137)	(346)	(243)
Recoveries	31	17	98	89
Balance	7,844	7,987	7,844	7,987	7,930
Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				52	52
Commercial & Industrial [Member]
Balance	1,088	974	1,144	1,308	1,308
Provision for expected credit losses	52	(19)	(5)	102
Charge-offs	(64)	0	(64)	0
Recoveries	0	0	1	0
Balance	1,076	955	1,076	955	1,144
Commercial & Industrial [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				(455)	(455)
Commercial Real Estate Portfolio Segment [Member]
Balance	3,678	3,951	3,650	3,943	3,943
Provision for expected credit losses	(200)	180	(172)	241
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance	3,478	4,131	3,478	4,131	3,650
Commercial Real Estate Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				(53)	(53)
Farmland [Member]
Balance	87	91	89	0	0
Provision for expected credit losses	6	(2)	4	(4)
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0
Balance	93	89	93	89	89
Farmland [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				93	93
Land Development [Member]
Balance	183	266	174	0	0
Provision for expected credit losses	(5)	(20)	4	(152)
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0
Balance	178	246	178	246	174
Land Development [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				398	398
Residential Portfolio Segment [Member]
Balance	2,018	1,638	2,018	1,571	1,571
Provision for expected credit losses	67	56	66	(43)
Charge-offs	0	0	0	0	0
Recoveries	1	2	2	2
Balance	2,086	1,696	2,086	1,696	2,018
Residential Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				166	166
Consumer Portfolio Segment [Member]
Balance	894	862	855	902	902
Provision for expected credit losses	165	130	265	221
Charge-offs	(156)	(137)	(282)	(243)	(560)
Recoveries	30	15	95	87
Balance	$ 933	$ 870	$ 933	870	855
Consumer Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance				$ (97)	$ (97)