Long-Term Debt - Summary of Long-Term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Jul. 23, 2015
Long-term debt
Capital leases	$ 449	$ 543
Less: Current portion	(4,552)	(4,545)
Long-term debt, noncurrent	1,160,814	795,881
6% Senior Notes
Long-term debt
Long-term debt, gross	375,000
Less: Unamortized debt issuance costs	(3,780)
Long-term Debt	371,220
7% Senior Notes
Long-term debt
Long-term debt, gross	375,000	375,000	$ 375,000
Less: Unamortized debt issuance costs	(7,919)	(8,141)
Long-term Debt	367,081	366,859
New Term Loan
Long-term debt
Long-term debt, gross	417,563	418,625
Less: Unamortized discount and debt issuance costs	(12,066)	(12,578)
Long-term Debt	405,497	406,047
New Revolving Credit Facility
Long-term debt
Long-term debt, gross	23,000	29,000
Less: Unamortized debt issuance costs	(1,881)	(2,023)
Long-term Debt	$ 21,119	$ 26,977

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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