Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Disaggregation of Revenue [Line Items]
Revenue	$ 569,555	$ 500,752
Total occupational health center revenue
Disaggregation of Revenue [Line Items]
Revenue	519,901	472,922
Onsite health clinics
Disaggregation of Revenue [Line Items]
Revenue	37,196	16,550
Other
Disaggregation of Revenue [Line Items]
Revenue	12,458	11,280
Workers’ compensation
Disaggregation of Revenue [Line Items]
Revenue	337,679	302,107
Employer services
Disaggregation of Revenue [Line Items]
Revenue	172,368	160,140
Consumer health
Disaggregation of Revenue [Line Items]
Revenue	7,830	8,611
Other occupational health center revenue
Disaggregation of Revenue [Line Items]
Revenue	$ 2,024	$ 2,064