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v3.25.2

Property and Equipment - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Apr. 30, 2025 | Apr. 30, 2024 | Apr. 30, 2023 | Apr. 30, 2022
Property, Plant and Equipment [Line Items] |  |  |  |
Finance lease, depreciation and amortization expenses | $ 1,600 | $ 1,900 |  |
Finance lease, depreciation and amortization expenses | $ 1,500 | 1,700 |  |
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] | Other current liabilities, Other Liabilities, Noncurrent |  |  |
Assets under finance lease | $ 1,000 | 1,000 |  |
Accumulated depreciation | 11,688 | 10,391 |  |
Net loss on disposal of equipment | 293 | 435 |  |
Finance lease, depreciation and amortization expense | 150 | 146 |  |
2022 Finance Lease |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Finance lease costs | $ 370 |  |  | $ 370
Present value of minimum future obligations interest rate | 3.25% |  |  |
Finance lease, depreciation and amortization expense | $ 77 | 75 |  |
Interest on finance lease liability | 3 | 6 |  |
2023 Finance Lease |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Finance lease costs | $ 368 |  | $ 368 |
Present value of minimum future obligations interest rate | 3.50% |  |  |
Finance lease, depreciation and amortization expense | $ 73 | 71 |  |
Interest on finance lease liability | 7 | 9 |  |
Finance Leased Assets |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Depreciation | 150 | 146 |  |
Laboratory Equipment |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Disposed of lab equipment | 636 | 542 |  |
Accumulated depreciation | 343 | 107 |  |
Net loss on disposal of equipment | $ 293 | $ 435 |  |

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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(8)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(14)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-1 + Details
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