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Summary of Significant Accounting Policies - Summary of Sales (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2023
Disaggregation of Revenue [Line Items]
Sales	$ 1,146,208	$ 1,160,798	$ 1,204,194
Sales – used autos
Disaggregation of Revenue [Line Items]
Sales	987,346	1,003,640	1,057,465
Wholesales – third party
Disaggregation of Revenue [Line Items]
Sales	40,070	52,463	54,610
Service contract sales
Disaggregation of Revenue [Line Items]
Sales	83,753	67,213	57,593
Accident protection plan revenue
Disaggregation of Revenue [Line Items]
Sales	$ 35,039	$ 37,482	$ 34,526

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