Long-Term Debt and Interest Expense - Long-Term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Oct. 02, 2018
Debt Instrument [Line Items]
Finance leases and other notes	$ 25,966	$ 35,898
Unamortized discounts and deferred financing costs	(25,513)	(8,795)
Total long-term debt	318,011	327,103
Less current portion	17,606	18,738
Total non-current portion of long-term debt	300,405	308,365
Senior Notes
Debt Instrument [Line Items]
Stated interest rate			10.75%
Long-term debt, gross	300,000	300,000
ABL Facility
Debt Instrument [Line Items]
Long-term debt, gross	2,558	0
Senior Secured Promissory Note
Debt Instrument [Line Items]
Long-term debt, gross	$ 15,000	$ 0

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Amount of short-term and long-term debt and lease obligation.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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

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Amount of long-term debt and lease obligation, classified as noncurrent.

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Amount of long-term debt and lease obligation, classified as current.

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