Note I - Income Taxes (Details Textual)	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Effective Income Tax Rate Reconciliation, Percent	14.60%	21.40%	40.60%	22.20%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%	21.00%