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Long-Term Indebtedness - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019
Summary of Long-term debt
Net discount	$ (4,910)		$ (6,535)
Deferred financing costs	(28,651)		(14,581)
Total debt	2,619,929		2,274,884
Less current portion			(8,000)	$ (8,000)
Total long-term debt	2,619,929		2,266,884	$ 2,269,761
Second Amended and Restated Term Loan B
Summary of Long-term debt
Long-term debt	479,000		796,000
Senior Unsecured 2025 Notes
Summary of Long-term debt
Long-term debt	725,000
Second Amended and Restated Revolving Loan
Summary of Long-term debt
Long-term line of credit	0		0
Senior Unsecured 2024 Notes
Summary of Long-term debt
Long-term debt	949,490	$ 949,500	1,000,000
Senior Unsecured 2027 Notes
Summary of Long-term debt
Long-term debt	500,000		500,000
Estimate of Fair Value Measurement
Summary of Long-term debt
Total long-term debt	$ 2,463,700		$ 2,348,900