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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Apr. 30, 2024 | Apr. 30, 2023
Income Taxes [Line Items] |  |
Deferred tax asset, Section 174 addback | $ 2,303 | $ 1,558
Deferred tax asset valuation allowance | 926 | 8,568
Foreign tax credit carryforwards | $ 638 | 638
Minimum |  |
Income Taxes [Line Items] |  |
Federal, state and local tax returns period (in years) | 3 years |
Foreign subsidiaries tax returns period (in years) | 3 years |
Maximum |  |
Income Taxes [Line Items] |  |
Federal, state and local tax returns period (in years) | 4 years |
Foreign subsidiaries tax returns period (in years) | 7 years |
India Income Tax Department |  |
Income Taxes [Line Items] |  |
Tax withholding expense | $ 371 | $ 406

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