SEGMENT INFORMATION - Schedule of Carrying Value of Goodwill by Reportable Segment (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2026	Dec. 31, 2025
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 755,809
Goodwill from Jaide Health acquisition	3,190
Goodwill, ending balance	758,999
Accumulated impairment loss	546,911	$ 546,911
Nurse and Allied Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	259,137
Goodwill from Jaide Health acquisition	0
Goodwill, ending balance	259,137
Accumulated impairment loss	277,727	277,727
Physician and Leadership Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	128,245
Goodwill from Jaide Health acquisition	0
Goodwill, ending balance	128,245
Accumulated impairment loss	269,184	269,184
Technology and Workforce Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	368,427
Goodwill from Jaide Health acquisition	3,190
Goodwill, ending balance	371,617
Accumulated impairment loss	$ 0	$ 0

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details