Fair value measurements.

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- Definition

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

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- Definition

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

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- Definition

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.

+ References

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- Definition

Number of warrants or rights outstanding.

+ References

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position without allowance for credit loss.

+ References

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- Definition

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

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- Definition

The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities.

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- Definition

The cash inflow associated with the amount received from holders exercising their stock warrants.

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Investments and Fair Value Measurements - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		2 Months Ended	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Feb. 28, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Fair Value Measurements [Line Items]
Debt securities, available-for-sale								$ 0
Investments in an unrealized loss position				$ 320,300		$ 320,300
Other than Temporary Impairment Losses, Investments				0		0
Interest income				5,500	$ 500	7,900	$ 1,100
Proceeds from warrant exercises						0	183,007
Change in fair value of warrants liability			$ 326,900	$ 0	$ 0	$ 0	$ 326,900
Warrants outstanding (in shares)				0		0
Series E-2 Preferred Shares \| Traton
Fair Value Measurements [Line Items]
Warrants to purchase preferred stock (in shares)		4,331,644
Exercise price per share (in dollars per share)		$ 11.31
Proceeds from warrant exercises		$ 49,000
Series E Redeemable Convertible Preferred Stock \| Navistar, Inc.
Fair Value Measurements [Line Items]
Warrants to purchase preferred stock (in shares)	9,477,073		9,477,073
Exercise price per share (in dollars per share)	$ 14.14		$ 14.14
Proceeds from warrant exercises	$ 134,000