Note C - Finance Receivables, Net - Changes in the Finance Receivables Allowance for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
Balance	$ 184,418	$ 155,041	$ 127,842
Provision for credit losses	257,101	163,662	162,246
Charge-offs, net of recovered collateral	(194,312)	(134,285)	(135,047)
Balance	$ 247,207	$ 184,418	$ 155,041

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Name:	us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant