Supplemental Cash Flow Information - Supplemental Cash Flow Disclosures (Details) - USD ($) $ in Thousands	9 Months Ended
	Jan. 31, 2025	Jan. 31, 2024
Supplemental disclosures:
Interest paid	$ 53,795	$ 47,968
Income taxes paid, net	7,853	1,628
Non-cash transactions:
Inventory acquired in repossession and accident protection plan claims	86,031	103,474
Reduction in net receivables for deferred ancillary product revenue at time of charge-off	24,445	28,542
Net settlement option exercises	0	1,646
Right-of-use assets obtained in exchange for operating lease liabilities	384	558
Right-of-use assets obtained in exchange for operating lease liabilities through acquisitions	$ 7,433	$ 1,822