Note C - Finance Receivables, Net - Financing Receivables Analysis (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Statement [Line Items]
Average total collected per active customer per month	$ 534	$ 513
Principal collected as a percent of average finance receivables	34.70%	43.50%
Average down-payment percentage	5.40%	6.40%
Average originating contract term (in months) (Month)	42 months 27 days	40 months 6 days
Portfolio weighted average contract term, including modifications (in months) (Year)	46 years 3 months 18 days	42 years 10 months 24 days