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Employee Stock Plans - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended |
--- | --- | ---
Jul. 31, 2024 | Jul. 31, 2023 | Apr. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Payments of tax withholdings on restricted stock | $ 16,625 | $ 10,175 |
Shares repurchased during the period, value | $ 40,113 | $ 14,358 |
Treasury Stock, Common |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares repurchased during the period (in shares) | 351,250 | 90,000 |
Shares repurchased during the period, value | $ 23,500 | $ 4,200 |
ESPP |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Employees stock purchased (in shares) | 70,309 | 105,311 |
Employees stock purchased, price per share (in usd per share) | $ 60.43 | $ 44.59 |
Shares available for future issuance (in shares) | 1,500,000 |  |
Market Based Restricted Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares outstanding (in shares) | 800,000 |  |
Total unrecognized compensation cost related to non-vested awards | $ 39,200 |  |
Restricted Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares outstanding (in shares) | 1,949,000 |  | 1,974,000
Total unrecognized compensation cost related to non-vested awards | $ 101,100 |  |
Expected cost recognized over weighted-average period | 2 years 9 months 18 days |  |
Shares repurchased during the period to pay for taxes (in shares) | 252,622 | 201,441 |
Payments of tax withholdings on restricted stock | $ 16,600 | $ 10,200 |

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