Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Total Revenue	$ 389,190	$ 436,516	$ 795,187	$ 853,483
Flex revenue
Disaggregation of Revenue [Line Items]
Total Revenue	378,470	419,700	774,002	821,566
Direct Hire revenue
Disaggregation of Revenue [Line Items]
Total Revenue	10,720	16,816	21,185	31,917
Technology
Disaggregation of Revenue [Line Items]
Total Revenue	352,025	384,595	716,869	744,500
Technology | Flex revenue
Disaggregation of Revenue [Line Items]
Total Revenue	346,326	375,507	705,850	727,223
Technology | Direct Hire revenue
Disaggregation of Revenue [Line Items]
Total Revenue	5,699	9,088	11,019	17,277
FA
Disaggregation of Revenue [Line Items]
Total Revenue	37,165	51,921	78,318	108,983
FA | Flex revenue
Disaggregation of Revenue [Line Items]
Total Revenue	32,144	44,193	68,152	94,343
FA | Direct Hire revenue
Disaggregation of Revenue [Line Items]
Total Revenue	$ 5,021	$ 7,728	$ 10,166	$ 14,640