Debt and Other Long-Term Obligations - Summary of Outstanding Debt and Other Long Term Obligations (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Total Debt:
Long-term debt	$ 2,175,000	$ 2,175,000
Less: Deferred financing costs	(56,485)	(58,789)
Long-term debt	2,118,515	2,116,211
Other long-term obligations:
Other long-term obligations	191,721	197,728
Term Loan Secured Due 2024
Total Debt:
Long-term debt	975,000	975,000
6.875% Senior, Unsecured Notes Due 2022
Total Debt:
Long-term debt	700,000	700,000
7.125% Senior, Unsecured Notes Due 2025
Total Debt:
Long-term debt	$ 500,000	$ 500,000