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Financial Instruments and Fair Value - Narrative (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Oct. 31, 2024 | Dec. 31, 2024 | Jun. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |  |
Aggregate cost basis for investments |  | $ 45,300 |  | $ 45,300 | $ 37,200 |
Earnout liability |  | 38,648 |  | 38,648 | 38,601 |
Goodwill, impairment loss |  |  |  | 59,478 | 7,246 | $ 0
On-Demand Talent Reporting Unit |  |  |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |  |
Goodwill, impairment loss | $ 43,300 | 43,300 | $ 14,800 |  |  |
Europe Reporting Unit |  |  |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |  |
Goodwill, impairment loss |  |  | $ 1,500 |  |  |
Fair Value, Inputs, Level 3 | Non-Current and Other Non-Current Liabilities | Acqusition Earnout Accruals |  |  |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |  |
Earnout liability |  | 38,600 |  | 38,600 | 38,600 |
Fair Value, Inputs, Level 3 | Current Accrued Salaries and Benefits | Contingent Compensation |  |  |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |  |
Earnout accruals |  | 4,900 |  | 4,900 | 6,000 |
Fair Value, Inputs, Level 3 | Non-Current Accrued Salaries and Benefits | Contingent Compensation |  |  |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |  |
Earnout liability |  | $ 18,000 |  | $ 18,000 | $ 12,900 |

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