Goodwill, Trade Names, and Other Intangible Assets - Narrative (Details) $ / shares in Units, $ in Millions	3 Months Ended					12 Months Ended
	Mar. 31, 2021 segment	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2021 segment	Dec. 31, 2020 USD ($) $ / shares	Dec. 31, 2019 USD ($) $ / shares
Goodwill and Intangible Assets Disclosure [Line Items]
Number of reportable segments | segment	2					2
Trade Names
Goodwill and Intangible Assets Disclosure [Line Items]
Weighted average amortization period if not accelerated								7 years 6 months
Accelerated amortization resulting from the changes in the estimated remaining life of the trade name (in dollars per share) | $ / shares							$ 0.09
Impact on net (loss) income per share | $ / shares								$ 0.08
Trade Names | Accelerated Amortization
Goodwill and Intangible Assets Disclosure [Line Items]
Amortization of assets							$ 3.1
Search Services
Goodwill and Intangible Assets Disclosure [Line Items]
Impairment charges for goodwill			$ 10.2
Search Services | Customer relationships
Goodwill and Intangible Assets Disclosure [Line Items]
Impairment charges for intangible assets			0.3
Nurse And Allied Staffing
Goodwill and Intangible Assets Disclosure [Line Items]
Amortization of assets		$ 0.9	$ 1.4	$ 0.7
Nurse And Allied Staffing | Trade Names
Goodwill and Intangible Assets Disclosure [Line Items]
Impairment of intangibles indefinite lived					$ 14.5
Nurse And Allied Staffing | Trade Names
Goodwill and Intangible Assets Disclosure [Line Items]
Weighted average amortization period if not accelerated								7 years 9 months 18 days
Nurse And Allied Staffing | Trade Names | Accelerated Amortization
Goodwill and Intangible Assets Disclosure [Line Items]
Amortization of assets								$ 2.1
Physician Staffing | Trade Names
Goodwill and Intangible Assets Disclosure [Line Items]
Weighted average amortization period if not accelerated								7 years 9 months 18 days
Physician Staffing | Trade Names | Accelerated Amortization
Goodwill and Intangible Assets Disclosure [Line Items]
Amortization of assets								$ 0.8