The amount of principal which is converted to 294.1176 shares per the entity's debt agreement.

No definition available.

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

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- Definition

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

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- Definition

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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No definition available.

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Amount, after accumulated amortization, of debt discount.

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- Definition

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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- Definition

Amount of expense (income) related to adjustment to fair value of warrant liability.

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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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- Definition

Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

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Per share or per unit amount of equity securities issued.

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- Definition

Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

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No definition available.

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Notes Payable and Stock Purchase Warrants - Carrying amount of notes payable (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Aug. 14, 2020	Aug. 09, 2020	Dec. 31, 2019	Jul. 31, 2019	Feb. 28, 2018	Jan. 31, 2018
Debt Instrument [Line Items]
Warrants			$ 4,800,000
Carrying Amount	$ 57,216,000			$ 11,800,000
Solar Term Loan
Debt Instrument [Line Items]
Aggregate principal amount				45,000,000
Debt Discount				(1,466,000)
Issuance costs				(100,000)
Carrying Amount				43,434,000
2023 Notes
Debt Instrument [Line Items]
Amount of principal which is converted to shares							$ 1,000
Conversion price							$ 3.40
Aggregate principal amount	15,700,000			15,700,000		$ 3,000,000.0	$ 50,000,000.0
Debt Discount	(2,755,000)			(3,900,000)
Carrying Amount	12,945,000			11,800,000
2025 Notes
Debt Instrument [Line Items]
Amount of principal which is converted to shares					$ 1,000
Conversion price					$ 1.32
Aggregate principal amount	57,700,000			82,000,000	$ 82,000,000.0
Debt Discount	(28,276,000)			(46,482,000)
Issuance costs	(431,000)			(708,000)	$ (3,300,000)
Carrying Amount	28,993,000			$ 34,810,000
PHC Notes
Debt Instrument [Line Items]
Amount of principal which is converted to shares			$ 1,000
Conversion price			$ 0.54
Aggregate principal amount	36,312,000		$ 35,000,000.0
Debt Discount	(22,237,000)
Issuance costs	(1,359,000)		$ (2,900,000)
Carrying Amount	12,716,000
PPP Loan
Debt Instrument [Line Items]
Aggregate principal amount	5,763,000
Carrying Amount	5,763,000
Other income
Debt Instrument [Line Items]
Change in fair value of warrants	$ 23,500,000
Series A Preferred Stock \| Masters Capital
Debt Instrument [Line Items]
Number of shares issued and sold		3,000	27,000
Stock price per share		$ 1,000.00	$ 1,000.00
Amount of principal which is converted to shares			$ 1,000
Conversion price			$ 0.476