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SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Apr. 30, 2023 | Apr. 30, 2022 | Apr. 30, 2021
Allowance for doubtful accounts |  |  |
Movement in valuation and qualifying accounts and reserves |  |  |
Balance at Beginning of Period | $ 592 | $ 595 | $ 1,190
Balance Acquired from Acquisition |  | 5 |
Charged to Cost and Expenses | 124 | 52 | 82
Deductions | (560) | (60) | (677)
Balance at End of Period | 156 | 592 | 595
Warranty reserve |  |  |
Movement in valuation and qualifying accounts and reserves |  |  |
Balance at Beginning of Period | 2,190 | 2,341 | 2,015
Balance Acquired from Acquisition |  | 256 |
Charged to Cost and Expenses | 3,052 | 1,089 | 1,650
Deductions | (1,600) | (1,496) | (1,324)
Balance at End of Period | 3,642 | 2,190 | 2,341
Reserve for inventory excess and obsolescence |  |  |
Movement in valuation and qualifying accounts and reserves |  |  |
Balance at Beginning of Period | 12,334 | 10,289 | 10,232
Balance Acquired from Acquisition |  | 1,561 | 1,415
Charged to Cost and Expenses | 8,136 | 2,271 | 1,178
Deductions | (5,265) | (1,787) | (2,536)
Balance at End of Period | 15,205 | 12,334 | 10,289
Reserve for self-insured medical claims |  |  |
Movement in valuation and qualifying accounts and reserves |  |  |
Balance at Beginning of Period | 1,653 | 1,293 | 753
Charged to Cost and Expenses | 13,863 | 14,724 | 11,329
Deductions | (14,133) | (14,364) | (10,789)
Balance at End of Period | $ 1,383 | $ 1,653 | $ 1,293

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column B)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column E)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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