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		12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025	Jun. 30, 2025
Balance	$ 8,777	$ 7,844	$ 8,470	$ 7,930	$ 7,930
Provision for expected credit losses	160	495	655	657
Charge-offs	(121)	(353)	(384)	(699)
Recoveries	52	61	127	159
Balance	8,868	8,047	8,868	8,047	8,470
Commercial and Industrial [Member]
Balance	1,299	1,076	1,249	1,144	1,144
Provision for expected credit losses	232	359	289	354
Charge-offs	(6)	(186)	(13)	(250)	(253)
Recoveries	6	0	6	1
Balance	1,531	1,249	1,531	1,249	1,249
Commercial Real Estate Portfolio Segment [Member]
Balance	3,650	3,478	3,446	3,650	3,650
Provision for expected credit losses	(87)	(170)	117	(342)
Charge-offs	0	0	0	0
Recoveries	3	0	3	0
Balance	3,566	3,308	3,566	3,308	3,446
Farmland [Member]
Balance	129	93	118	89	89
Provision for expected credit losses	(23)	12	(12)	16
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0
Balance	106	105	106	105	118
Land Development [Member]
Balance	242	178	266	174	174
Provision for expected credit losses	(29)	20	(53)	24
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0
Balance	213	198	213	198	266
Residential Portfolio Segment [Member]
Balance	2,013	2,086	2,010	2,018	2,018
Provision for expected credit losses	(140)	(92)	(137)	(26)
Charge-offs	0	0	0	0	0
Recoveries	1	0	1	2
Balance	1,874	1,994	1,874	1,994	2,010
Consumer Portfolio Segment [Member]
Balance	1,444	933	1,381	855	855
Provision for expected credit losses	207	366	451	631
Charge-offs	(115)	(167)	(371)	(449)	(546)
Recoveries	42	61	117	156
Balance	$ 1,578	$ 1,193	$ 1,578	$ 1,193	$ 1,381