The number of warrants issued during the period.

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Amount of debt that can be borrowed in addition to initial notes.

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Elective redemption percentage of debt.

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The net cash inflow associated with the amount received from issuance of initial notes, warrants and first offer rights.

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No definition available.

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Premiums Paid, Early Retirement of Debt

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Principal Payments, Percentage of Face Amount

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Redemption percentage of debt under change of control provisions.

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Repurchase Offer, Percentage of Cash Proceeds Received

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Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.

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Exercise price per share or per unit of warrants or rights outstanding.

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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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Face (par) amount of debt instrument at time of issuance.

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

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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

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Carrying value as of the balance sheet date of portion of long-term loans payable due within one year or the operating cycle if longer.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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The cash outflow for loan origination associated cost which is usually collected through escrow.

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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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12.5% Senior Secured Notes and Loans Payable, 12.5% Senior Secured Notes (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended		12 Months Ended
	Nov. 03, 2020	Jul. 15, 2019	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2025	Sep. 30, 2022	Dec. 31, 2020
12.5% Senior Secured Notes [Abstract]
Warrants issued (in shares)		2,000,000
Warrant exercise price (in dollars per share)		$ 0.001
Net proceeds from issuance of initial notes, warrants and first offer rights		$ 66,082
Long-term debt			$ 51,500		$ 51,500
Premium on early retirement of debt	$ 2,250				2,250
Loans payable, current			$ 7,725		7,725				$ 2,575
Amortization expense, deferred debt issuance costs and debt discounts					$ 3,604	$ 1,758
Forecast
12.5% Senior Secured Notes [Abstract]
Principal payments, percentage of face amount							40.00%	10.00%
Senior Notes
12.5% Senior Secured Notes [Abstract]
Proceeds from refinancing of debt	4,000
Payments of loan costs	$ 220
Maximum \| Marathon Pangolin Royalty LLC
12.5% Senior Secured Notes [Abstract]
Percentage of cash proceeds					30.00%
Senior Secured Notes Due 2025
12.5% Senior Secured Notes [Abstract]
Interest rate			12.50%		12.50%
Principal amount		$ 70,000
Warrants issued (in shares)	714,000
Warrants issued to purchase common stock (in shares)	143,000
Additional borrowing capacity			$ 30,000		$ 30,000
Redemption percentage of debt under change of control provisions					101.00%
Amortization expense, deferred debt issuance costs and debt discounts			1,171	$ 590	$ 3,488	$ 1,758
Unamortized deferred debt issuance cost and deferred debt discounts			11,110		11,110				14,596
Senior Secured Notes Due 2025 \| Put Option
12.5% Senior Secured Notes [Abstract]
Fair value of put option			258		258
Senior Secured Notes Due 2025 \| Put Option \| Accrued Expenses
12.5% Senior Secured Notes [Abstract]
Fair value of put option			111		111
Senior Secured Notes Due 2025 \| Put Option \| Other Noncurrent Liabilities
12.5% Senior Secured Notes [Abstract]
Fair value of put option			$ 147		$ 147
Senior Secured Notes Due 2025 \| Senior Notes
12.5% Senior Secured Notes [Abstract]
Interest rate		12.50%	12.50%		12.50%
Repayment of debt	$ 22,500
Long-term debt	$ 70,000								$ 51,500
Repurchase price percentage					112.50%
Senior Secured Notes Due 2025 \| Minimum
12.5% Senior Secured Notes [Abstract]
Elective redemption percentage of debt					101.56%
Senior Secured Notes Due 2025 \| Maximum
12.5% Senior Secured Notes [Abstract]
Principal amount		$ 100,000
Elective redemption percentage of debt					112.50%
Senior Secured Notes Due 2025 - First Additional Offering
12.5% Senior Secured Notes [Abstract]
Warrant exercise price (in dollars per share)			$ 0.001		$ 0.001
Additional borrowing capacity			$ 10,000		$ 10,000
Senior Secured Notes Due 2025 - First Additional Offering \| Maximum
12.5% Senior Secured Notes [Abstract]
Warrants issued (in shares)			2,143,000		2,143,000
Senior Secured Notes Due 2025 - Second Additional Offering
12.5% Senior Secured Notes [Abstract]
Additional borrowing capacity			$ 20,000		$ 20,000