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Goodwill and Intangible Assets - Schedule of intangible assets (Detail) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2025 | Dec. 31, 2024
Intangible Asset, Acquired, Finite-Lived [Line Items] |  |
Gross carrying amount | $ 762,154 | $ 697,960
Goodwill relating to acquisitions consummated during the period | 111,925 | 0
Accumulated amortization & Impairment | 684,719 | 671,010
Net | 77,435 | 26,950
Financial Services |  |
Intangible Asset, Acquired, Finite-Lived [Line Items] |  |
Goodwill relating to acquisitions consummated during the period | 6,132 |
Consumer and Healthcare |  |
Intangible Asset, Acquired, Finite-Lived [Line Items] |  |
Goodwill relating to acquisitions consummated during the period | 88,519 |
High Tech and Manufacturing |  |
Intangible Asset, Acquired, Finite-Lived [Line Items] |  |
Goodwill relating to acquisitions consummated during the period | 17,274 |
Customer-related intangible assets |  |
Intangible Asset, Acquired, Finite-Lived [Line Items] |  |
Gross carrying amount | 524,352 | 468,500
Accumulated amortization & Impairment | 461,877 | 451,285
Net | 62,475 | 17,215
Marketing-related intangible assets |  |
Intangible Asset, Acquired, Finite-Lived [Line Items] |  |
Gross carrying amount | 103,898 | 97,607
Accumulated amortization & Impairment | 96,396 | 93,609
Net | 7,502 | 3,998
Technology-related intangible assets |  |
Intangible Asset, Acquired, Finite-Lived [Line Items] |  |
Gross carrying amount | 133,904 | 131,853
Accumulated amortization & Impairment | 126,446 | 126,116
Net | $ 7,458 | $ 5,737

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