Amount of loss from an adjustment 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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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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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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Amount of transfers of financial instrument classified as a liability into (out of) level 3 of the fair value hierarchy.

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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	6 Months Ended
	Jun. 30, 2022	Dec. 31, 2021	Nov. 09, 2020
Fair Value Measurements
Cash and cash equivalents	$ 45,425	$ 33,461
Marketable securities	105,092	148,327
Derivative assets	1,085	239
Derivative liabilities	54,737	236,291
Energy Capital Facility
Fair Value Measurements
Derivative liabilities	19,500	69,400	$ 4,200
Recurring \| Embedded conversion option \| 2023 Notes
Fair Value Measurements
Derivative liabilities	438	5,817
Recurring \| Embedded conversion option \| PHC Notes
Fair Value Measurements
Derivative liabilities	46,760	149,058
Recurring \| Embedded conversion option \| 2025 Notes.
Fair Value Measurements
Derivative liabilities	7,977	81,417
Recurring \| Money market funds
Fair Value Measurements
Cash and cash equivalents	42,168	29,197
Recurring \| Corporate debt securities
Fair Value Measurements
Marketable securities	36,896	39,748
Recurring \| Commercial paper
Fair Value Measurements
Marketable securities	14,532	57,369
Recurring \| Asset backed Securities
Fair Value Measurements
Marketable securities	14,734	26,707
Recurring \| Government and agency securities
Fair Value Measurements
Marketable securities	38,930	24,503
Recurring \| PHC Option
Fair Value Measurements
Derivative assets	1,085	239
Recurring \| Put Or Call Option \| Energy Capital Facility
Fair Value Measurements
Derivative liabilities	19,476	69,401
Recurring \| Level 1 \| Money market funds
Fair Value Measurements
Cash and cash equivalents	42,168	29,197
Recurring \| Level 1 \| Government and agency securities
Fair Value Measurements
Marketable securities	34,489	19,957
Recurring \| Level 2 \| Embedded conversion option \| 2023 Notes
Fair Value Measurements
Derivative liabilities	438
Recurring \| Level 2 \| Embedded conversion option \| 2025 Notes.
Fair Value Measurements
Derivative liabilities	7,977	81,417
Recurring \| Level 2 \| Corporate debt securities
Fair Value Measurements
Marketable securities	36,896	39,748
Recurring \| Level 2 \| Commercial paper
Fair Value Measurements
Marketable securities	14,532	57,369
Recurring \| Level 2 \| Asset backed Securities
Fair Value Measurements
Marketable securities	14,734	26,707
Recurring \| Level 2 \| Government and agency securities
Fair Value Measurements
Marketable securities	4,441	4,546
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	224,037
Gain on fair value adjustment of option	(49,925)
Gain on change in fair value of derivatives	(107,677)
Financial asset (gain) impairment cost, net	(846)
Change in fair value hierarchy classification	(438)
Balance at the end of the period	65,151
Recurring \| Level 3 \| Embedded conversion option \| 2023 Notes
Fair Value Measurements
Derivative liabilities		5,817
Recurring \| Level 3 \| Embedded conversion option \| PHC Notes
Fair Value Measurements
Derivative liabilities	46,760	149,058
Recurring \| Level 3 \| PHC Option
Fair Value Measurements
Derivative assets	1,085	239
Recurring \| Level 3 \| Put Or Call Option \| Energy Capital Facility
Fair Value Measurements
Derivative liabilities	$ 19,476	$ 69,401