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Long-Term Debt - Summary of Long-term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Sep. 20, 2018	Sep. 13, 2017	Mar. 29, 2017	Jul. 23, 2015
Long-term debt
Less: Unamortized debt issuance costs	$ (8,992)	$ (9,533)
Long-term notes and other payables	2,910	3,030
Less: Current portion	(415)	(462)
Long-term debt, noncurrent	3,057,151	3,261,273
Term Loan
Long-term debt
Long-term debt, gross	956,750	956,750
Less: Unamortized discount and debt issuance costs	(17,679)	(18,426)
Long-term Debt	939,071	938,324
6% Senior Notes due 2026
Long-term debt
Long-term debt, gross	600,000	600,000	$ 600,000
Less: Unamortized discount and debt issuance costs	(19,485)	(19,630)
Long-term Debt	580,515	580,370
6% Senior Notes due 2025
Long-term debt
Long-term debt, gross	875,000	875,000		$ 500,000	$ 375,000
Plus: Unamortized debt premium	22,687	23,491
Less: Unamortized debt issuance costs	(17,803)	(18,405)
Long-term Debt	879,884	880,086
7% Senior Notes due 2023
Long-term debt
Long-term debt, gross	375,000	375,000				$ 375,000
Less: Unamortized discount and debt issuance costs	(5,814)	(6,075)
Long-term Debt	369,186	368,925
Revolving Credit Facility
Long-term debt
Revolving Credit Facility	40,000	245,000
Lumière Loan
Long-term debt
Lumière Loan	$ 246,000	$ 246,000