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Goodwill and Intangible Assets - Schedule of Changes in Carrying Value of Goodwill By Reportable Segment (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Apr. 30, 2025 | Apr. 30, 2024
Goodwill [Roll Forward] |  |
Goodwill, beginning balance | $ 908,376 | $ 909,491
Exchange rate fluctuations | 3,599 | (1,115)
Additions | 36,857 |
Goodwill, ending balance | 948,832 | 908,376
Infinity Consulting Solutions ("ICS") |  |
Goodwill [Roll Forward] |  |
Additions | 36,900 |
Operating Segments | Consulting |  |
Goodwill [Roll Forward] |  |
Goodwill, beginning balance | 172,994 | 173,093
Exchange rate fluctuations | 202 | (99)
Additions | 0 |
Goodwill, ending balance | 173,196 | 172,994
Operating Segments | Digital |  |
Goodwill [Roll Forward] |  |
Goodwill, beginning balance | 325,387 | 325,558
Exchange rate fluctuations | 668 | (171)
Additions | 0 |
Goodwill, ending balance | 326,055 | 325,387
Operating Segments | North America |  |
Goodwill [Roll Forward] |  |
Goodwill, beginning balance | 46,154 | 46,237
Exchange rate fluctuations | (310) | (83)
Additions | 0 |
Goodwill, ending balance | 45,844 | 46,154
Operating Segments | EMEA |  |
Goodwill [Roll Forward] |  |
Goodwill, beginning balance | 46,246 | 46,401
Exchange rate fluctuations | 388 | (155)
Additions | 0 |
Goodwill, ending balance | 46,634 | 46,246
Operating Segments | Asia Pacific |  |
Goodwill [Roll Forward] |  |
Goodwill, beginning balance | 972 | 972
Exchange rate fluctuations | 0 | 0
Additions | 0 |
Goodwill, ending balance | 972 | 972
Operating Segments | Professional Search & Interim |  |
Goodwill [Roll Forward] |  |
Goodwill, beginning balance | 254,345 | 254,666
Exchange rate fluctuations | 2,133 | (321)
Additions | 36,857 |
Goodwill, ending balance | 293,335 | 254,345
Operating Segments | RPO |  |
Goodwill [Roll Forward] |  |
Goodwill, beginning balance | 62,278 | 62,564
Exchange rate fluctuations | 518 | (286)
Additions | 0 |
Goodwill, ending balance | $ 62,796 | $ 62,278

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