Note F - Debt Facilities - Summary of Debt Facilities (Details) - USD ($) $ in Thousands	Apr. 30, 2023	Apr. 30, 2022
Statement [Line Items]
Revolving line of credit, net	$ 167,231	$ 44,670
Non-recourse notes payable, net	471,367	395,986
Total debt	638,598	440,656
Line of Credit [Member]
Statement [Line Items]
Debt facilities, gross	168,516	46,674
Debt issuance costs	(1,285)	(2,004)
Non Recourse Notes Payable, 2022 Issuance [Member]
Statement [Line Items]
Debt facilities, gross	134,137	399,994
Non Recourse Notes Payable, 2023 Issuance [Member]
Statement [Line Items]
Debt facilities, gross	338,777
Notes Payable [Member]
Statement [Line Items]
Debt issuance costs	$ (1,547)	$ (4,008)