Note 9 - Income Taxes - Reconciliation of the Federal Statutory Income Tax Rate to the Effective Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Statutory federal income tax rate expense, net of noncontrolling interest	21.00%	21.00%
State income tax, net of federal benefits	5.90%	5.38%
Permanent tax	2.19%	(1.12%)
Other	1.72%	(1.25%)
Effective Income Tax Rate Reconciliation, Percent	30.81%	24.01%
PROVISION FOR INCOME TAXES
Deferred income tax expense	$ 297	$ 174
Current Income Tax Expense (Benefit)	1,714	3,102
Total income tax expense	$ 2,011	$ 3,276