REVENUE RECOGNITION (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue from services	$ 622,707	$ 788,732
Temporary Staffing Services
Disaggregation of Revenue [Line Items]
Revenue from services	605,847	771,551
Other Services
Disaggregation of Revenue [Line Items]
Revenue from services	16,860	17,181
Nurse And Allied Staffing
Disaggregation of Revenue [Line Items]
Revenue from services	582,302	765,580
Nurse And Allied Staffing | Temporary Staffing Services
Disaggregation of Revenue [Line Items]
Revenue from services	567,650	749,447
Nurse And Allied Staffing | Other Services
Disaggregation of Revenue [Line Items]
Revenue from services	14,652	16,133
Physician Staffing
Disaggregation of Revenue [Line Items]
Revenue from services	40,405	23,152
Physician Staffing | Temporary Staffing Services
Disaggregation of Revenue [Line Items]
Revenue from services	38,197	22,104
Physician Staffing | Other Services
Disaggregation of Revenue [Line Items]
Revenue from services	$ 2,208	$ 1,048