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Share-Based Compensation - Schedule of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Total pre-tax stock-based compensation expense charged against income | $ 3,738 | $ 2,484
Selling, general and administrative expense |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Total pre-tax stock-based compensation expense charged against income | 3,724 | 2,471
Costs of services provided |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Total pre-tax stock-based compensation expense charged against income | 14 | 13
Stock options |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Total pre-tax stock-based compensation expense charged against income | 1,568 | 179
Restricted stock units and deferred stock units |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Total pre-tax stock-based compensation expense charged against income | 1,765 | 1,935
Performance stock units |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Total pre-tax stock-based compensation expense charged against income | 352 | 330
Employee Stock Purchase Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Total pre-tax stock-based compensation expense charged against income | $ 53 | $ 40

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