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Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands | 12 Months Ended
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Apr. 30, 2023 | Apr. 30, 2022 | Apr. 30, 2021
SEC Schedule, 12-09, Allowance, Credit Loss [Member] |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Year | $ 226 | $ 331 | $ 472
Additions (Reductions) Charged to Cost and Expenses | 420 | 78 | 182
Other | 0 | 0 | 0
Deductions | (197) | (183) | (323)
Balance at End of Year | 449 | 226 | 331
Reserve for Cash Discounts [Member] |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Year | 1,973 | 1,836 | 1,171
Additions (Reductions) Charged to Cost and Expenses | 21,540 | 21,486 | 19,109
Other | 0 | 0 | 0
Deductions | (21,760) | (21,349) | (18,444)
Balance at End of Year | 1,753 | 1,973 | 1,836
Reserve for Sales Returns and Allowances [Member] |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Year | 9,539 | 7,154 | 4,541
Additions (Reductions) Charged to Cost and Expenses | 26,043 | 30,088 | 22,298
Other | 0 | 0 | 0
Deductions | (26,292) | (27,703) | (19,685)
Balance at End of Year | $ 9,290 | $ 9,539 | $ 7,154

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column B)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column E)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-4 + Details
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- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column C)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-4 + Details
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