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Financial Instruments and Fair Value - Narrative (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Aggregate cost basis for non-qualified deferred compensation plan | $ 42,500 | $ 37,200
Acquisition earnout accruals, non-current | 38,255 | 38,601
Earnout | Fair Value, Inputs, Level 3 | Non-Current and Other Non-Current Liabilities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Acquisition earnout accruals, non-current | 38,300 | 38,600
Contingent Compensation | Fair Value, Inputs, Level 3 | Current Accrued Salaries and Benefits |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Acquisition earnout accruals, current | 4,100 | 6,000
Contingent Compensation | Fair Value, Inputs, Level 3 | Non-Current Accrued Salaries and Benefits |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Acquisition earnout accruals, non-current | $ 11,400 | $ 12,900

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