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Note B - Summary of Significant Accounting Policies - Sales (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2022
Sales	$ 1,160,798	$ 1,204,194	$ 1,038,682
Sales Used Autos [Member]
Sales	1,003,640	1,057,465	918,414
Wholesales Third Party [Member]
Sales	52,463	54,610	46,625
Service Contract Sales [Member]
Sales	67,213	57,593	42,958
Payment Protection Plan Revenue [Member]
Sales	$ 37,482	$ 34,526	$ 30,685

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