Long-Term Debt - Outstanding amounts and available borrowings under Senior Secured Credit Facilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Long-term debt
Long-term Debt	$ 1,509,645	$ 1,393,573
Less: current portion	(25,229)	(15,822)
Long-term debt, net of current portion	1,484,416	1,377,751
Less: outstanding letters of credit	(16,300)	(16,400)
Senior Secured Credit Facilities
Long-term debt
Less: outstanding letters of credit	(4,900)	(4,900)
Term Loan Facility
Long-term debt
Principal amount of borrowings	1,400,000	1,400,000
Less: cumulative principal payments	(19,515)	(9,004)
Less: unamortized original issue discount	(14,224)	(16,826)
Less: unamortized finance costs	(5,807)	(6,893)
Long-term Debt	1,360,454	1,367,277
Less: current portion	(14,015)	(14,015)
Long-term debt, net of current portion	$ 1,346,439	$ 1,353,262
Average interest rate (as a percent)	6.80%	3.25%
Effective interest rate (as a percent)	7.03%	3.46%
Revolving Credit Facility
Long-term debt
Principal amount of borrowings	$ 65,000	$ 65,000
Less: outstanding letters of credit	(4,930)	(4,930)
Additional letters of credit capacity	$ 60,070	$ 60,070