Business Segments - Schedule of Depreciation Expense by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Depreciation	$ 12,285	$ 13,193	$ 37,893	$ 38,713
Total contract talent solutions
Segment Reporting Information [Line Items]
Depreciation	5,921	6,559	18,638	19,516
Permanent placement talent solutions
Segment Reporting Information [Line Items]
Depreciation	1,987	2,146	6,128	6,417
Protiviti
Segment Reporting Information [Line Items]
Depreciation	$ 4,377	$ 4,488	$ 13,127	$ 12,780