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Note B - Summary of Significant Accounting Policies - Sales (Details) - USD ($) $ in Thousands | 12 Months Ended
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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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