Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 2,163,417	$ 1,900,192	$ 1,838,081
Workers’ compensation
Disaggregation of Revenue [Line Items]
Revenue	1,306,207	1,156,082	1,102,313
Employer services
Disaggregation of Revenue [Line Items]
Revenue	659,541	596,052	594,223
Consumer health
Disaggregation of Revenue [Line Items]
Revenue	31,302	31,519	31,194
Other occupational health center revenue
Disaggregation of Revenue [Line Items]
Revenue	8,602	8,752	8,284
Total occupational health center revenue
Disaggregation of Revenue [Line Items]
Revenue	2,005,652	1,792,405	1,736,014
Onsite health clinics
Disaggregation of Revenue [Line Items]
Revenue	110,243	64,081	60,181
Other Businesses
Disaggregation of Revenue [Line Items]
Revenue	$ 47,522	$ 43,706	$ 41,886