Commitments and Contingencies (Details Textual) $ in Millions	9 Months Ended
	Jan. 31, 2025 USD ($) letterOfCredit	Jan. 31, 2024 USD ($) letterOfCredit
Lessee, Lease, Description [Line Items]
Operating lease, percent of facilities leased	87.00%
Operating lease, rent expense	$ 7.8	$ 6.6
Operating lease, weighted average discount rate	4.90%
Number of standby letters of credit | letterOfCredit	2	2
Standby letters of credit, outstanding	$ 4.4	$ 3.9
Minimum | Dealership Leases
Lessee, Lease, Description [Line Items]
Operating lease, term	3 years
Maximum | Dealership Leases
Lessee, Lease, Description [Line Items]
Operating lease, term	5 years