REVENUE RECOGNITION - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 56,723	$ 39,674	$ 108,640	$ 74,135
RPO Recruitment
Disaggregation of Revenue [Line Items]
Revenue	26,714	14,646	51,974	27,032
Contracting
Disaggregation of Revenue [Line Items]
Revenue	$ 30,009	$ 25,028	$ 56,666	$ 47,103

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details