Segment Information - Summary of Goodwill by Reportable Segment (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 595,551
Reallocation due to change in segments	0
Goodwill, ending balance	869,941
Accumulated impairment loss	214,939	$ 214,939
Nurse and Allied Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	344,316
Reallocation due to change in segments	(14,600)
Goodwill, ending balance	329,745
Accumulated impairment loss	154,444	154,444
Physician and Leadership Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	163,348
Reallocation due to change in segments	297
Goodwill, ending balance	163,645
Accumulated impairment loss	60,495	60,495
Technology and workforce solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	87,887
Reallocation due to change in segments	14,303
Goodwill, ending balance	376,551
Accumulated impairment loss	0	$ 0
Advanced
Goodwill [Roll Forward]
Goodwill adjustment for acquisitions	29
Advanced \| Nurse and Allied Solutions
Goodwill [Roll Forward]
Goodwill adjustment for acquisitions	29
Advanced \| Physician and Leadership Solutions
Goodwill [Roll Forward]
Goodwill adjustment for acquisitions	0
Advanced \| Technology and workforce solutions
Goodwill [Roll Forward]
Goodwill adjustment for acquisitions	0
b4health
Goodwill [Roll Forward]
Goodwill adjustment for acquisitions	(66)
b4health \| Nurse and Allied Solutions
Goodwill [Roll Forward]
Goodwill adjustment for acquisitions	0
b4health \| Physician and Leadership Solutions
Goodwill [Roll Forward]
Goodwill adjustment for acquisitions	0
b4health \| Technology and workforce solutions
Goodwill [Roll Forward]
Goodwill adjustment for acquisitions	(66)
Stratus Video
Goodwill [Roll Forward]
Goodwill from Stratus Video acquisition	274,427
Stratus Video \| Nurse and Allied Solutions
Goodwill [Roll Forward]
Goodwill from Stratus Video acquisition	0
Stratus Video \| Physician and Leadership Solutions
Goodwill [Roll Forward]
Goodwill from Stratus Video acquisition	0
Stratus Video \| Technology and workforce solutions
Goodwill [Roll Forward]
Goodwill from Stratus Video acquisition	$ 274,427

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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