Note I - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Effective Income Tax Rate Reconciliation, Percent	19.80%	14.60%	20.10%	40.60%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%		21.00%
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 0		$ 0