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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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