Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Disaggregation of Revenue [Line Items]
Revenue	$ 572,800	$ 489,638	$ 1,624,337	$ 1,435,151
Total occupational health center revenue
Disaggregation of Revenue [Line Items]
Revenue	526,032	463,061	1,515,092	1,355,373
Onsite health clinics
Disaggregation of Revenue [Line Items]
Revenue	34,897	15,593	74,016	46,989
Other
Disaggregation of Revenue [Line Items]
Revenue	11,871	10,984	35,229	32,789
Workers’ compensation
Disaggregation of Revenue [Line Items]
Revenue	343,454	298,681	977,752	866,952
Employer services
Disaggregation of Revenue [Line Items]
Revenue	173,230	154,809	507,688	458,849
Consumer health
Disaggregation of Revenue [Line Items]
Revenue	7,395	7,332	23,183	23,327
Other occupational health center revenue
Disaggregation of Revenue [Line Items]
Revenue	$ 1,953	$ 2,239	$ 6,469	$ 6,245