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- Definition

Acquisition Earnout Accruals, Non-Current

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- Definition

Aggregate Cost Basis for Non-Qualified Deferred Compensation Plan

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- Definition

Amount of investment in equity security without readily determinable fair value.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of impairment loss from asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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Financial Instruments and Fair Value - Narrative (Details) - USD ($)	3 Months Ended	9 Months Ended
	Jun. 30, 2024	Sep. 30, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Aggregate cost basis for non-qualified deferred compensation plan		$ 43,200,000	$ 37,200,000
Acquisition earnout accruals, non-current		41,832,000	38,601,000
Impairment		16,224,000
Equity investment without readily determinable fair value, amount		11,000,000	0
On-Demand Talent Reporting Unit
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impairment	$ 14,800,000	14,800,000
Europe Reporting Unit
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impairment	$ 1,500,000	1,500,000
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		41,800,000	38,600,000
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		4,300,000	6,000,000
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		$ 17,800,000	$ 12,900,000