Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Total Revenue	$ 405,997	$ 416,967
Flex revenue
Disaggregation of Revenue [Line Items]
Total Revenue	395,532	401,866
Direct Hire revenue
Disaggregation of Revenue [Line Items]
Total Revenue	10,465	15,101
Technology
Disaggregation of Revenue [Line Items]
Total Revenue	364,844	359,905
Technology | Flex revenue
Disaggregation of Revenue [Line Items]
Total Revenue	359,524	351,716
Technology | Direct Hire revenue
Disaggregation of Revenue [Line Items]
Total Revenue	5,320	8,189
FA
Disaggregation of Revenue [Line Items]
Total Revenue	41,153	57,062
FA | Flex revenue
Disaggregation of Revenue [Line Items]
Total Revenue	36,008	50,150
FA | Direct Hire revenue
Disaggregation of Revenue [Line Items]
Total Revenue	$ 5,145	$ 6,912