Acquisitions - Nova Acquisition Narrative (Details) $ in Thousands		3 Months Ended	7 Months Ended	9 Months Ended
	Mar. 01, 2025 USD ($) state hospital	Sep. 30, 2025 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2025 USD ($) health_center	Dec. 31, 2024 USD ($)
Business Combination, Separately Recognized Transaction [Line Items]
Number of occupational health centers operated by entity | health_center				628
Goodwill		$ 1,482,885	$ 1,482,885	$ 1,482,885	$ 1,234,707
Nova Medical Centers
Business Combination, Separately Recognized Transaction [Line Items]
Number of occupational health centers operated by entity | hospital	67
Number of states in which entity operates | state	5
Net revenues of acquiree		$ 31,300	$ 73,900
Nova Acquisition
Business Combination, Separately Recognized Transaction [Line Items]
Consideration given	$ 265,005
Cash paid to acquire business, term loan add-on	102,100
Cash paid to acquire business, available borrowing capacity	50,000
Goodwill	$ 209,453