Note C - Finance Receivables, Net - Changes in Finance Receivables (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2019	Jan. 31, 2018
Balance			$ 383,617	$ 357,161
Finance receivable originations			399,089	356,489
Finance receivable collections			(206,620)	(180,137)
Provision for credit losses	$ (35,555)	$ (37,872)	(111,619)	(110,778)
Losses on claims for payment protection plan			(12,148)	(12,039)
Inventory acquired in repossession and payment protection plan claims			(37,406)	(30,312)
Balance	$ 414,913	$ 380,384	$ 414,913	$ 380,384