Business Segments - Schedule of Depreciation Expense by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Segment Reporting [Line Items]
Depreciation expense	$ 12,282	$ 12,285	$ 36,921	$ 37,893
Contract talent solutions
Segment Reporting [Line Items]
Depreciation expense	6,100	5,921	18,113	18,638
Permanent placement talent solutions
Segment Reporting [Line Items]
Depreciation expense	2,138	1,987	6,301	6,128
Protiviti
Segment Reporting [Line Items]
Depreciation expense	$ 4,044	$ 4,377	$ 12,507	$ 13,127