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Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands | Jan. 31, 2023 | Apr. 30, 2022
--- | --- | ---
Property, Plant and Equipment [Line Items] |  |
Total property and equipment | $ 15,092 | $ 12,711
Less: Accumulated depreciation and amortization | (7,240) | (5,577)
Property and equipment, net | $ 7,852 | $ 7,134
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Property and equipment, net | Property and equipment, net
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 | 1,990 | 1,667
Capitalized software development costs |  |
Property, Plant and Equipment [Line Items] |  |
Total property and equipment | 1,888 | 1,888
Laboratory equipment |  |
Property, Plant and Equipment [Line Items] |  |
Total property and equipment | 10,257 | 8,618
Assets in progress |  |
Property, Plant and Equipment [Line Items] |  |
Total property and equipment | 600 | 181
Leasehold improvements |  |
Property, Plant and Equipment [Line Items] |  |
Total property and equipment | $ 111 | $ 111

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- Definition Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980 + Details
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