Long-term debt - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Weighted average effective interest rate at quarter end	5.65%
Weighted average effective interest rate during quarter	5.60%
Percentage of debt instruments bearing fixed interest rate	56.00%
Long Term Debt Percentage Bearing Economically Fixed Interest Rate	92.00%
Change Healthcare Temporary Funding Assistance
Debt Instrument [Line Items]
CHC Temporary Funding Assistance	$ 0	$ 92,777
Senior Secured Credit Facilities
Debt Instrument [Line Items]
Weighted average effective interest rate at quarter end	6.62%
Debt Instrument, Unamortized Discount	$ 7,759	8,084
Deferred Financing Costs	26,965	28,879
Senior Notes
Debt Instrument [Line Items]
Deferred Financing Costs	36,081	37,612
Debt Instrument, Unamortized Premium	9,766	$ 10,239
Term Loan A-1
Debt Instrument [Line Items]
Secured Debt Outstanding Principal Balance Subject To SOFR	361,617
Revolving line of credit
Debt Instrument [Line Items]
Secured Debt Outstanding Principal Balance Subject To SOFR	425,000
Line of Credit Facility [Line Items]
Line of Credit Facility, Remaining Borrowing Capacity	1,075,000
Maximum borrowing capacity on the revolving credit facilities	1,500,000
Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding	0
Bilateral Secured Letter Of Credit Facility
Debt Instrument [Line Items]
Letters of credit outstanding	$ 172,716

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