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Acquisition - Summary of net assets acquired (Details) - USD ($) $ in Thousands | Aug. 01, 2022 | Oct. 31, 2022 | Apr. 30, 2022
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Goodwill |  | $ 790,063 | $ 725,592
Tax deductible goodwill |  | $ 67,200 |
Infinity Consulting Solutions |  |  |
Business Acquisition [Line Items] |  |  |
Current assets | $ 19,932 |  |
Long-term assets | 1,496 |  |
Intangible assets | 16,400 |  |
Current liabilities | 6,248 |  |
Long-term liabilities | 566 |  |
Net assets acquired | 31,014 |  |
Purchase price | 99,322 |  |
Goodwill | 68,308 |  |
Acquired receivables | 19,400 |  |
Infinity Consulting Solutions | Customer Relationships |  |  |
Business Acquisition [Line Items] |  |  |
Intangible assets | $ 15,300 |  |
Weighted-average useful lives | 7 years |  |
Infinity Consulting Solutions | Trade Names |  |  |
Business Acquisition [Line Items] |  |  |
Intangible assets | $ 1,100 |  |
Weighted-average useful lives | 2 years |  |

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