Note C - Finance Receivables, Net - Financing Receivables Analysis (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Average total collected per active customer per month			$ 561	$ 534
Portfolio weighted average contract term, including modifications (in months) (Month)	48 months 6 days	47 months 9 days
Principal collected as a percent of average finance receivables	15.40%	15.20%	15.40%	15.20%
Average down-payment percentage			5.20%	4.90%
Average originating contract term (in months) (Month)			44 months 9 days	44 months 12 days