Amount of loss from an adjustment measured at fair value on recurring basis using unobservable input (level 3).

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Amount of conversion of financial instruments measured at fair value on recurring basis using unobservable input (level 3).

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Amount of financial asset impairment cost measured at fair value on recurring basis using unobservable input (level 3).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

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Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Fair Value Measurements - Recurring (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020	Nov. 09, 2020
Fair Value Measurements
Cash and cash equivalents	$ 46,211	$ 18,005
Marketable securities	154,921
Derivative assets	236	1,886
Derivative liabilities	317,304	62,119
Energy Capital Facility
Fair Value Measurements
Derivative liabilities	91,100		$ 4,200
Recurring \| Embedded conversion option \| 2023 Notes
Fair Value Measurements
Derivative liabilities	9,492	622
Recurring \| Embedded conversion option \| 2025 Notes
Fair Value Measurements
Derivative liabilities	112,085	15,850
Recurring \| Embedded conversion option \| PHC Notes
Fair Value Measurements
Derivative liabilities	195,727	45,647
Recurring \| Call Option \| Masters Capital
Fair Value Measurements
Derivative liabilities		23,479
Recurring \| Money market funds
Fair Value Measurements
Cash and cash equivalents	43,818	3
Recurring \| Corporate debt securities
Fair Value Measurements
Marketable securities	40,085
Recurring \| Commercial paper
Fair Value Measurements
Marketable securities	62,336
Recurring \| Government and agency securities
Fair Value Measurements
Marketable securities	20,050
Recurring \| PHC Option
Fair Value Measurements
Derivative assets	236	1,886
Recurring \| Put Or Call Option \| Energy Capital Facility
Fair Value Measurements
Derivative liabilities	91,097	16,255
Recurring \| Level 1 \| Money market funds
Fair Value Measurements
Cash and cash equivalents	43,818	3
Recurring \| Level 1 \| Government and agency securities
Fair Value Measurements
Marketable securities	20,050
Recurring \| Level 2 \| Embedded conversion option \| 2025 Notes
Fair Value Measurements
Derivative liabilities	112,085	15,850
Recurring \| Level 2 \| Corporate debt securities
Fair Value Measurements
Marketable securities	40,085
Recurring \| Level 2 \| Commercial paper
Fair Value Measurements
Marketable securities	62,336
Recurring \| Level 3
Reconciliation of items measured at fair value on a recurring basis that used significant unobservable inputs (Level 3)
Balance at the beginning of the period	84,117
Conversion of financial instruments	(19,973)
Loss on fair value adjustment of option	74,848
Loss on change in fair value of derivatives	158,951
Gain on extinguishment of option	(3,513)
Financial asset impairment cost	1,650
Balance at the end of the period	296,080
Recurring \| Level 3 \| Embedded conversion option \| 2023 Notes
Fair Value Measurements
Derivative liabilities	9,492	622
Recurring \| Level 3 \| Embedded conversion option \| PHC Notes
Fair Value Measurements
Derivative liabilities	195,727	45,647
Recurring \| Level 3 \| Call Option \| Masters Capital
Fair Value Measurements
Derivative liabilities		23,479
Recurring \| Level 3 \| PHC Option
Fair Value Measurements
Derivative assets	236	1,886
Recurring \| Level 3 \| Put Or Call Option \| Energy Capital Facility
Fair Value Measurements
Derivative liabilities	$ 91,097	$ 16,255