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v3.23.2

Note L - Commitments and Contingencies (Details Textual) - USD ($) | 12 Months Ended
--- | ---
Apr. 30, 2023 | Apr. 30, 2022 | Apr. 30, 2021
Statement [Line Items] |  |  |
Letters of Credit Outstanding, Amount | $ 2,850,000 |  |
Lessee, Operating Lease, Liability, to be Paid | 82,187,000 |  |
Operating Lease, Expense | 9,000,000.0 | $ 8,000,000.0 | $ 8,000,000.0
Non-cancelable [Member] |  |  |
Statement [Line Items] |  |  |
Lessee, Operating Lease, Liability, to be Paid | 13,300,000 |  |
Reasonably Assured [Member] |  |  |
Statement [Line Items] |  |  |
Lessee, Operating Lease, Liability, to be Paid | $ 68,900,000 |  |
Minimum [Member] |  |  |
Statement [Line Items] |  |  |
Lessee, Operating Lease, Term of Contract (Year) | 3 years |  |
Minimum [Member] | Dealership Leases [Member] |  |  |
Statement [Line Items] |  |  |
Lessee, Operating Lease, Term of Contract (Year) | 3 years |  |
Maximum [Member] |  |  |
Statement [Line Items] |  |  |
Lessee, Operating Lease, Term of Contract (Year) | 10 years |  |
Maximum [Member] | Dealership Leases [Member] |  |  |
Statement [Line Items] |  |  |
Lessee, Operating Lease, Term of Contract (Year) | 5 years |  |

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