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Note B - Summary of Significant Accounting Policies - Sales (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2020	Oct. 31, 2019
Sales	$ 196,684	$ 167,743	$ 359,483	$ 317,817
Sales Used Autos [Member]
Sales	172,813	145,489	314,447	274,943
Wholesales Third Party [Member]
Sales	9,283	8,245	16,232	15,426
Service Contract Sales [Member]
Sales	7,969	7,830	15,843	15,300
Payment Protection Plan Revenue [Member]
Sales	$ 6,619	$ 6,179	$ 12,961	$ 12,148

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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