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, 2024	Apr. 30, 2023
Statutory federal income tax rate expense	21.00%	21.00%
State income tax, net of federal benefits	5.97%	5.90%
Permanent tax	0.63%	2.19%
Other	(2.28%)	1.72%
Effective Income Tax Rate Reconciliation, Percent	25.32%	30.81%
PROVISION FOR INCOME TAXES
Deferred income tax expense (benefit)	$ (446)	$ 297
Current Income Tax Expense (Benefit)	4,690	1,714
Total income tax expense	$ 4,244	$ 2,011