Note 11 - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Income taxes computed at the statutory rate on pretax income	$ 2,714	$ 2,842
Tax exempt income	(400)	(431)
Cash surrender value income	(55)	(54)
Tax credit	(17)	(22)
Other non-deductible expenses	6	4
Total income tax expense	$ 2,248	$ 2,339