Note 13 - Income Taxes - Reconciliation of Income Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Tax expense at statutory rate	$ 402	$ 857
Tax expense at statutory rate, percent	21.00%	21.00%
State and local income taxes, net of federal tax benefit	$ 117	$ 131
State and local income taxes, net of federal tax benefit, percent	6.10%	3.20%
Income from controlled foreign corporation	$ 56	$ 7
Income from controlled foreign corporation, percent	2.90%	0.20%
Other	$ 7	$ (61)
Other, percent	0.40%	(1.50%)
Total tax expense (benefit)	$ 582	$ 934
Total tax expense, percent	30.40%	22.90%