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Restructuring - Summary of activity in the Severance and employee-related benefits and Relocation accruals (Details) - USD ($) $ in Thousands | 12 Months Ended
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Apr. 30, 2026 | Apr. 30, 2025
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve, Beginning Balance | [1] | $ 1,830 | $ 6,355
Charges | [1] | (886) | (402)
Cash payments and settlements | [1] | (620) | (4,123)
Restructuring Reserve, Ending Balance | [1] | 324 | 1,830
Severance and employee relateds benefits |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve, Beginning Balance |  | 1,372 | 5,527
Charges |  | (570) | (922)
Cash payments and settlements |  | (478) | (3,233)
Restructuring Reserve, Ending Balance |  | 324 | 1,372
Employee relocation |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve, Beginning Balance |  | 458 | 828
Charges |  | (316) | 520
Cash payments and settlements |  | (142) | (890)
Restructuring Reserve, Ending Balance |  | $ 0 | $ 458
[1] | Recorded in accrued payroll and incentives.

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