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COMMITMENTS AND CONTINGENCIES (Tables) | 12 Months Ended
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Apr. 30, 2025
COMMITMENTS AND CONTINGENCIES. |
Schedule of Changes in warranty reserves | Changes in warranty reserves are as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Year Ended April 30,
​ | ​ | 2025 |  | 2024
Balance at beginning of period | ​ | $ | 174 | ​ | $ | 165
Warranty issued during period | ​ |  | 105 | ​ |  | 87
Change in pre-existing reserves | ​ |  | — | ​ |  | (66)
Warranty expenditures during period | ​ |  | (20) | ​ |  | (12)
Balance at end of period | ​ | $ | 259 | ​ | $ | 174

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- Definition Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-8 + Details
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