Long-Term Debt and Finance Leases - Term B Loans and Revolving Credit Facility (Details)	3 Months Ended
	Mar. 31, 2021
Term B Loans | Alternate base rate
Long-Term Debt and Capital Leases
Basis spread on variable rate (as a percent)	2.25%
Term B Loans | LIBOR rate
Long-Term Debt and Capital Leases
Basis spread on variable rate (as a percent)	3.25%
Revolving Credit Facility | Alternate base rate
Long-Term Debt and Capital Leases
Basis spread on variable rate (as a percent)	2.00%
Revolving Credit Facility | LIBOR rate
Long-Term Debt and Capital Leases
Basis spread on variable rate (as a percent)	3.00%