Long-Term Debt and Interest Expense - Unamortized Discounts (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Unamortized deferred debt costs	$ 87	$ 0
Unamortized discounts and deferred debt costs	15,225	19,001
Capital Leases - Short-term
Debt Instrument [Line Items]
Unamortized discount	1,657	1,600
Capital Leases - Long-term
Debt Instrument [Line Items]
Unamortized discount	3,173	6,000
Term Loan
Debt Instrument [Line Items]
Unamortized discount	$ 10,308	$ 11,401

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount, after accumulated amortization, of debt discount (premium).

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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