Finance Receivables, Net - Summary of Changes in Finance Receivables (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024	Apr. 30, 2025	Apr. 30, 2024
Receivables [Abstract]
Balance at beginning of period	$ 1,172,025		$ 1,172,025		$ 1,180,673	$ 1,097,931
Finance receivable originations			528,728	$ 527,487
Finance receivable collections			(236,576)	(224,640)
Provision for credit losses	(119,074)	$ (99,522)	(222,109)	(194,945)
Losses on claims for accident protection plan			(18,466)	(16,797)
Inventory acquired in repossession and accident protection plan claims			(60,873)	(57,071)
Balance at end of period	$ 1,171,377	$ 1,131,965	$ 1,171,377	$ 1,131,965	$ 1,180,010