Acquisitions - Cross Country Workforce Solutions Group (Details) - USD ($) $ in Thousands		3 Months Ended				12 Months Ended
	Jun. 08, 2021	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Asset Acquisition [Line Items]
Payment for contingent liability						$ 7,500	$ 7,500	$ 0
Earnout liability						6,794	7,500
Goodwill						$ 135,430	$ 163,268
Workforce Solutions Group, Inc.
Asset Acquisition [Line Items]
Cash consideration, gross	$ 25,000
Equity consideration for acquisition value	$ 5,000
Equity consideration for acquisition (in shares)	307,730
Net working capital adjustment				$ 1,100
Escrow account	$ 2,000
Business performance, term	3 years
Contingent consideration liabilities	$ 15,000
Payment for contingent liability		$ 7,500	$ 7,500
Other intangible assets	14,200
Goodwill	$ 22,066
Workforce Solutions Group, Inc. | Customer relationships
Asset Acquisition [Line Items]
Other intangible assets					$ 14,200
Weighted average useful life of assets acquired					11 years 6 months