Note M - Supplemental Cash Flow Information - Supplemental Cash Flow Disclosures (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
Interest paid	$ 10,421	$ 7,029	$ 8,152
Income taxes paid, net	19,238	26,964	8,505
Inventory acquired in repossession and accident protection plan claims	83,919	50,868	51,450
Loss accrued on disposal of property and equipment	0	0	3
Net settlement option exercises	$ 5,685	$ 1,610	$ 1,589