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Property, Plant, and Equipment - Summary of Depreciation and Amortization Expense (Details) - USD ($) $ in Thousands | 12 Months Ended
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Apr. 30, 2025 | Apr. 30, 2024 | Apr. 30, 2023
Property Plant And Equipment [Line Items] |  |  |
Depreciation and amortization | $ 13,275 | $ 16,101 | $ 16,511
Amortization expense of intangible assets | 9,800 | 13,100 | 13,700
Cost of sales |  |  |
Property Plant And Equipment [Line Items] |  |  |
Depreciation and amortization | 1,031 | 1,313 | 1,429
Research and development |  |  |
Property Plant And Equipment [Line Items] |  |  |
Depreciation and amortization | 1,123 | 615 | 415
Selling, marketing, and distribution |  |  |
Property Plant And Equipment [Line Items] |  |  |
Depreciation and amortization | 1,225 | 836 | 362
General and administrative |  |  |
Property Plant And Equipment [Line Items] |  |  |
Depreciation and amortization | 9,896 | 13,337 | 14,305
Amortization expense of intangible assets | $ 8,500 | $ 12,800 | $ 13,600

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