Debt Instrument, Covenant, Fixed Charge Coverage Ratio Required, Minimum

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Debt Instrument, Covenant, Leverage Ratio to EBITDA, Maximum

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Debt Instrument, Covenant, Remaining Borrowing Capacity Required For United States Availability, Minimum

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Debt Instrument, Covenant, Remaining Borrowing Capacity Required, Minimum

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Debt Instrument, Mandatory Quarterly Amortization Payment

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Debt Instrument, Percent of Ownership

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Financing Obligation, Right-of-Use Asset, Writeoff

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Financing Obligation, Writeoff

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Gain (Loss) on Extinguishment of Financing Obligation

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Repayments Of Financing Obligations

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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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, after accumulated amortization, of debt discount.

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Amount, before accumulated amortization, of debt issuance costs related to line of credit arrangements. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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

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

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Amount of interest expense incurred on a debt or other obligation to related party.

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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The cash outflow for loan and debt issuance costs.

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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Debt Obligations - Narrative (Details) - USD ($)		1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
Debt Obligations - Narrative (Details) - USD ($)	Mar. 01, 2021	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Interest expense			$ 14,502,000	$ 13,426,000	$ 26,109,000	$ 28,206,000
Interest expense, related party			4,668,000	$ 4,586,000	8,733,000	$ 9,736,000
Interest payable, current		$ 3,400,000	3,400,000		3,400,000		$ 8,500,000
Repayments of financing obligations		10,200,000
Financing obligation, right-of-use asset, writeoff		48,100,000
Financing obligation, writeoff		55,200,000
Loss on extinguishment of financing obligation			(3,100,000)		(3,100,000)
New Term Loan
Debt Instrument [Line Items]
ABL Facility (Fifth Amendment)	$ 700,000,000.0
Debt instrument, mandatory quarterly amortization payment			17,500,000
Proceeds from issuance of debt	674,900,000
Term loan, original issue discount	21,000,000.0	19,600,000	19,600,000		19,600,000
Debt issuance costs	$ 4,100,000
Payments of financing costs					4,200,000
Unamortized debt issuance expense		2,500,000	2,500,000		2,500,000
Term loan, debt issuance costs		$ 2,500,000	$ 2,500,000		$ 2,500,000
Debt instrument, covenant, leverage ratio to EBITDA, maximum		3.0	3.0		3.0
New Term Loan \| General and administrative
Debt Instrument [Line Items]
Payments of financing costs					$ 1,700,000
New Term Loan \| LIBOR +
Debt Instrument [Line Items]
Rate	8.50%				8.50%
New Term Loan \| Base Rate
Debt Instrument [Line Items]
Rate	7.50%
New Term Loan \| Affiliated Entity
Debt Instrument [Line Items]
Debt instrument, percent ownership	38.40%	29.60%	29.60%		29.60%
New Term Loan \| Affiliated Entity \| GoldenTree Asset Management
Debt Instrument [Line Items]
Debt instrument, percent ownership	25.00%	17.90%	17.90%		17.90%
New Term Loan \| Affiliated Entity \| Paulson and Co
Debt Instrument [Line Items]
Debt instrument, percent ownership	7.10%	7.60%	7.60%		7.60%
New Term Loan \| Affiliated Entity \| Mudrick Capital Management
Debt Instrument [Line Items]
Debt instrument, percent ownership	6.30%	4.10%	4.10%		4.10%
Senior Term Loan
Debt Instrument [Line Items]
Debt issuance costs	$ 100,000
Repayment of debt	449,600,000
Interest expense	400,000
Unamortized debt issuance expense		$ 100,000	$ 100,000		$ 100,000
Term loan, debt issuance costs							$ 400,000
Write off of deferred debt issuance costs					300,000
Senior Term Loan \| LIBOR +
Debt Instrument [Line Items]
Rate							9.00%
Revolving Credit Facility \| ABL Facility \| Line of Credit
Debt Instrument [Line Items]
Debt issuance costs	2,400,000
Maximum revolver amount	175,000,000.0
Debt issuance costs, line of credit	$ 900,000
Debt issuance costs, line of credit, balance		3,100,000	3,100,000		3,100,000		$ 2,500,000
Current borrowing capacity		$ 77,700,000	$ 77,700,000		$ 77,700,000
Debt instrument, covenant, fixed charge coverage ratio required, minimum		1.00	1.00		1.00
Debt instrument, covenant, remaining borrowing capacity required, minimum		$ 14,000,000.0	$ 14,000,000.0		$ 14,000,000.0
Debt instrument, covenant, remaining borrowing capacity required for U.S excess availability, minimum		$ 10,000,000.0	$ 10,000,000.0		$ 10,000,000.0
Revolving Credit Facility \| ABL Facility \| Line of Credit \| LIBOR +
Debt Instrument [Line Items]
Rate	3.00%
Line of credit facility, unused capacity, commitment fee percentage	0.375%
Revolving Credit Facility \| ABL Facility \| Line of Credit \| Base Rate
Debt Instrument [Line Items]
Rate	2.00%