Note 11 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Effective Income Tax Rate Reconciliation, Percent	17.40%	17.30%
Unrecognized Tax Benefits	$ 0	$ 0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	0	0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 0	$ 0
Open Tax Year	2019 2020 2021 2022 2023