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Segment and Geographic Information - Narrative (Details) $ in Thousands | 3 Months Ended
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Mar. 31, 2025 USD ($) numberOfSegment | Mar. 31, 2024 USD ($)
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |
Number of reportable segments | numberOfSegment | 1 |
Reportable Segment |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |
Headcount‑related costs | $ 199,609 | $ 185,201
Segment reporting other segment item amount, net income measure | 79,595 | 82,252
Segment reporting other segment item amount, Adjusted OI w/SBC | 45,529 | 42,402
Headcount adjustment amount, Adjusted OI w/ SBC measure | $ 816 | $ 2,185

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