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, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Jun. 30, 2025
Balance	$ 8,709	$ 7,948	$ 8,470	$ 7,930	$ 7,930
Provision for expected credit losses	175	85	495	162
Charge-offs	(140)	(220)	(263)	(346)
Recoveries	33	31	75	98
Balance	8,777	7,844	8,777	7,844	8,470
Commercial and Industrial [Member]
Balance	1,303	1,088	1,249	1,144	1,144
Provision for expected credit losses	3	52	57	(5)
Charge-offs	(7)	(64)	(7)	(64)	(253)
Recoveries	0	0	0	1
Balance	1,299	1,076	1,299	1,076	1,249
Commercial Real Estate Portfolio Segment [Member]
Balance	3,537	3,678	3,446	3,650	3,650
Provision for expected credit losses	113	(200)	204	(172)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Balance	3,650	3,478	3,650	3,478	3,446
Farmland [Member]
Balance	119	87	118	89	89
Provision for expected credit losses	10	6	11	4
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0
Balance	129	93	129	93	118
Land Development [Member]
Balance	263	183	266	174	174
Provision for expected credit losses	(21)	(5)	(24)	4
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0
Balance	242	178	242	178	266
Residential Portfolio Segment [Member]
Balance	2,038	2,018	2,010	2,018	2,018
Provision for expected credit losses	(25)	67	3	66
Charge-offs	0	0	0	0	0
Recoveries	0	1	0	2
Balance	2,013	2,086	2,013	2,086	2,010
Consumer Portfolio Segment [Member]
Balance	1,449	894	1,381	855	855
Provision for expected credit losses	95	165	244	265
Charge-offs	(133)	(156)	(256)	(282)	(546)
Recoveries	33	30	75	95
Balance	$ 1,444	$ 933	$ 1,444	$ 933	$ 1,381