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SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Apr. 30, 2024 | Apr. 30, 2023 | Apr. 30, 2022
Allowance for doubtful accounts |  |  |
Movement in valuation and qualifying accounts and reserves |  |  |
Balance at Beginning of Period | $ 156 | $ 592 | $ 595
Balance Acquired from Acquisition |  |  | 5
Charged to Cost and Expenses | 89 | 124 | 52
Deductions | (86) | (560) | (60)
Balance at End of Period | 159 | 156 | 592
Warranty reserve |  |  |
Movement in valuation and qualifying accounts and reserves |  |  |
Balance at Beginning of Period | 3,642 | 2,190 | 2,341
Balance Acquired from Acquisition | 40 |  | 256
Charged to Cost and Expenses | 4,364 | 3,052 | 1,089
Deductions | (2,508) | (1,600) | (1,496)
Balance at End of Period | 5,538 | 3,642 | 2,190
Reserve for inventory excess and obsolescence |  |  |
Movement in valuation and qualifying accounts and reserves |  |  |
Balance at Beginning of Period | 15,205 | 12,334 | 10,289
Balance Acquired from Acquisition |  |  | 1,561
Charged to Cost and Expenses | 13,937 | 8,136 | 2,271
Deductions | (3,242) | (5,265) | (1,787)
Balance at End of Period | 25,900 | 15,205 | 12,334
Reserve for self-insured medical claims |  |  |
Movement in valuation and qualifying accounts and reserves |  |  |
Balance at Beginning of Period | 1,383 | 1,653 | 1,293
Charged to Cost and Expenses | 16,365 | 13,863 | 14,724
Deductions | (16,504) | (14,133) | (14,364)
Balance at End of Period | $ 1,244 | $ 1,383 | $ 1,653

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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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