REVENUE RECOGNITION - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue	$ 43,072	$ 51,917
RPO Recruitment
Disaggregation of Revenue [Line Items]
Revenue	21,521	25,260
Contracting
Disaggregation of Revenue [Line Items]
Revenue	$ 21,551	$ 26,657

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