Note I - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Effective Income Tax Rate Reconciliation, Percent	21.40%	20.10%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 0