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Note L - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Apr. 30, 2024 | Apr. 30, 2023 | Apr. 30, 2022
Letters of Credit Outstanding, Amount | $ 3,900 |  |
Lessee, Operating Lease, Liability, to be Paid | 82,854 |  |
Operating Lease, Expense | 9,000 | $ 9,000 | $ 8,000
Non-cancelable [Member] |  |  |
Lessee, Operating Lease, Liability, to be Paid | 23,800 |  |
Reasonably Assured [Member] |  |  |
Lessee, Operating Lease, Liability, to be Paid | $ 59,100 |  |
Minimum [Member] |  |  |
Lessee, Operating Lease, Term of Contract | 3 years |  |
Minimum [Member] | Dealership Leases [Member] |  |  |
Lessee, Operating Lease, Term of Contract | 3 years |  |
Maximum [Member] |  |  |
Lessee, Operating Lease, Term of Contract | 10 years |  |
Maximum [Member] | Dealership Leases [Member] |  |  |
Lessee, Operating Lease, Term of Contract | 5 years |  |

X
- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
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Period Type: | instant

X
- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
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X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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X
- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-4 + Details
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X
- Details
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- Details
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- Details
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- Details
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- Details
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