Note I - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Effective Income Tax Rate Reconciliation, Percent, Total	22.50%	(28.00%)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Effective Income Tax Rate Reconciliation, Global Intangible Low-taxed Income, Amount		$ 400
Income Tax Benefit Cares Act		$ 300
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 0