Long-Term Debt - Credit Facilities Narrative (Details) - USD ($) $ in Thousands			1 Months Ended
	Feb. 28, 2025	Jul. 26, 2024	Mar. 31, 2025	Dec. 31, 2025	Dec. 31, 2024	Jul. 11, 2024	Dec. 31, 2023
Term Loan
Long-term debt and notes payable
Maximum borrowing capacity		$ 850,000
Long-term debt outstanding				$ 942,875
Concentra Credit Facilities | Revolving Credit Facility
Long-term debt and notes payable
Debt instrument, covenant, leverage ratio, maximum		6.5
Percentage of capital stock of foreign subsidiaries		65.00%
Actual leverage ratio				3.4
Percentage of net cash proceeds from issuance of debt obligations		100.00%
Concentra Credit Facilities | Revolving Credit Facility | Ratio One
Long-term debt and notes payable
Percentage of net cash proceeds received		100.00%
Concentra Credit Facilities | Revolving Credit Facility | Ratio Two
Long-term debt and notes payable
Percentage of net cash proceeds received		50.00%
Concentra Credit Facilities | Revolving Credit Facility | Ratio Four
Long-term debt and notes payable
Percentage prepaid		50.00%
Concentra Credit Facilities | Revolving Credit Facility | Ratio Five
Long-term debt and notes payable
Percentage prepaid		25.00%
Concentra Credit Facilities | Revolving Credit Facility | Minimum
Long-term debt and notes payable
Covenant leverage ratio		4.00
Concentra Credit Facilities | Revolving Credit Facility | Minimum | Ratio One
Long-term debt and notes payable
Debt instrument, total net leverage ratio		4.50
Concentra Credit Facilities | Revolving Credit Facility | Minimum | Ratio Three
Long-term debt and notes payable
Debt instrument, total net leverage ratio		4.00
Concentra Credit Facilities | Revolving Credit Facility | Minimum | Ratio Four
Long-term debt and notes payable
Covenant leverage ratio		4.50
Concentra Credit Facilities | Revolving Credit Facility | Maximum | Ratio Two
Long-term debt and notes payable
Debt instrument, total net leverage ratio		4.50
Concentra Credit Facilities | Revolving Credit Facility | Maximum | Ratio Five
Long-term debt and notes payable
Covenant leverage ratio		4.50
Concentra Credit Facilities | Revolving Credit Facility | Maximum | Ratio Six
Long-term debt and notes payable
Covenant leverage ratio		4.00
6.875% senior notes | Senior notes
Long-term debt and notes payable
Aggregate principal amount						$ 650,000
Interest rate of debt				6.875%	6.875%		6.875%
Long-term debt outstanding				$ 650,000	$ 650,000
Unamortized original issue discounts and debt issuance costs				$ 10,400
Term Loan | Revolving Credit Facility
Long-term debt and notes payable
Interest rate of debt				5.72%
Term Loan | Concentra Term Loan | Revolving Credit Facility
Long-term debt and notes payable
Increase in revolving credit facility			$ 102,100
Interest rate margin (as a percent)	2.25%		2.00%
Debt instrument, basis point step down			25
Debt instrument, covenant, leverage ratio, maximum			3.25
Aggregate principal amount			$ 950,000
Debt instrument period payment principal percentage		0.25%
Term Loan | Concentra Term Loan | Revolving Credit Facility | Minimum | Term Secured Overnight Financing Rate
Long-term debt and notes payable
Interest rate margin (as a percent)			1.75%
Term Loan | Concentra Term Loan | Revolving Credit Facility | Minimum | Alternate Base Rate
Long-term debt and notes payable
Interest rate margin (as a percent)			0.75%
Term Loan | Concentra Term Loan | Revolving Credit Facility | Maximum | Term Secured Overnight Financing Rate
Long-term debt and notes payable
Interest rate margin (as a percent)			2.00%
Term Loan | Concentra Term Loan | Revolving Credit Facility | Maximum | Alternate Base Rate
Long-term debt and notes payable
Interest rate margin (as a percent)			1.00%
Revolving Credit Facility | Revolving Credit Facility
Long-term debt and notes payable
Long-term debt outstanding				$ 0	$ 0
Revolving Credit Facility | Concentra Revolving Credit Facility | Revolving Credit Facility
Long-term debt and notes payable
Maximum borrowing capacity		$ 400,000	$ 450,000
Increase in revolving credit facility			$ 50,000
Interest rate margin (as a percent)		2.50%	2.00%
Debt instrument, basis point step down			25
Debt instrument, covenant, leverage ratio, maximum			3.50
Remaining borrowing capacity				428,000
Revolving Credit Facility | Concentra Revolving Credit Facility | Revolving Credit Facility | Minimum | Term Secured Overnight Financing Rate
Long-term debt and notes payable
Interest rate margin (as a percent)			1.75%
Revolving Credit Facility | Concentra Revolving Credit Facility | Revolving Credit Facility | Minimum | Alternate Base Rate
Long-term debt and notes payable
Interest rate margin (as a percent)			0.75%
Revolving Credit Facility | Concentra Revolving Credit Facility | Revolving Credit Facility | Maximum | Term Secured Overnight Financing Rate
Long-term debt and notes payable
Interest rate margin (as a percent)			2.25%
Revolving Credit Facility | Concentra Revolving Credit Facility | Revolving Credit Facility | Maximum | Alternate Base Rate
Long-term debt and notes payable
Interest rate margin (as a percent)			1.25%
Standby letters of credit | Revolving Credit Facility
Long-term debt and notes payable
Maximum borrowing capacity		$ 75,000
Letter of credit | Concentra Revolving Credit Facility | Revolving Credit Facility
Long-term debt and notes payable
Outstanding borrowings				$ 22,000