Note 13 - Income Taxes - Reconciliation of Income Tax Rate (Details)	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Federal statutory rate	21.00%	21.00%
State and local taxes, net of federal benefit	3.50%	4.20%
Foreign operations	(0.10%)	(0.50%)
Federal tax credits	(0.90%)	(1.10%)
Officer's Compensation	1.80%	1.90%
Transaction costs	0.70%	0.00%
Uncertain tax position activity	0.40%	0.50%
Stock-based compensation	(2.80%)	(2.30%)
Tax rate changes	0.00%	0.00%
Other	2.60%	0.80%
Effective tax rate	26.20%	24.50%