Note C - Finance Receivables, Net - Changes in Finance Receivables (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Oct. 31, 2022	Jul. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021
Balance		$ 863,674		$ 863,674	$ 632,270
Finance receivable originations				580,838	476,580
Finance receivable collections				(206,358)	(194,546)
Provision for credit losses	$ (88,828)	$ (76,241)	$ (56,491)	(165,068)	(106,341)
Losses on claims for accident protection plan				(11,232)	(10,012)
Inventory acquired in repossession and accident protection plan claims				(74,935)	(33,881)
Balance	$ 986,919		$ 764,070	$ 986,919	$ 764,070