Business Segments - Depreciation Expense by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Depreciation	$ 13,006	$ 13,004
Total contract talent solutions
Segment Reporting Information [Line Items]
Depreciation	6,498	6,593
Permanent placement talent solutions
Segment Reporting Information [Line Items]
Depreciation	2,099	2,224
Protiviti
Segment Reporting Information [Line Items]
Depreciation	$ 4,409	$ 4,187