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Property and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands | Apr. 30, 2025 | Apr. 30, 2024
--- | --- | ---
Property, Plant and Equipment [Line Items] |  |
Total property and equipment | $ 16,063 | $ 16,112
Less: Accumulated depreciation and amortization | (11,688) | (10,391)
Property and equipment, net | $ 4,375 | $ 5,721
Finance lease, right-of-use asset, statement of financial position [Extensible Enumeration] | Property and equipment, net | Property and equipment, net
Current portion financing lease | $ 135 |
Long-term portion financing lease | 85 |
Furniture and fixtures |  |
Property, Plant and Equipment [Line Items] |  |
Total property and equipment | 246 | $ 246
Computer equipment and software |  |
Property, Plant and Equipment [Line Items] |  |
Total property and equipment | 2,165 | 2,152
Laboratory equipment |  |
Property, Plant and Equipment [Line Items] |  |
Total property and equipment | 11,323 | 11,506
Capitalized software development costs |  |
Property, Plant and Equipment [Line Items] |  |
Total property and equipment | 1,888 | 1,888
Assets in progress |  |
Property, Plant and Equipment [Line Items] |  |
Total property and equipment | 124 | 3
Leasehold improvements |  |
Property, Plant and Equipment [Line Items] |  |
Total property and equipment | $ 317 | $ 317

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