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

No definition available.

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- Definition

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

+ References

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-Publisher FASB
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- Definition

Amount of issuances 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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- Definition

Amount of settlements 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.

+ References

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- Definition

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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- Definition

Number of shares issued during the period as a result of the conversion of convertible securities.

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Fair Value of Financial Instruments - Reconciliation of Level 3 Fair Value Liabilities (Details) - USD ($) $ in Thousands		12 Months Ended
	Dec. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Common stock
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Stock conversion (in shares)			2
Conversion of SAFE instruments to common stock \| Common stock
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Stock conversion (in shares)		20,080,464
Conversion of SAFE instruments to common stock \| SAFE Instruments \| Common stock
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Stock conversion (in shares)	20,080,464
Conversion of stock warrants to common stock \| Common stock
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Stock conversion (in shares)	582,509	582,509
Legacy Heliogen preferred stock warrants \| Conversion of stock warrants to common stock \| Common stock
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Stock conversion (in shares)	354,738
SAFE Instruments \| Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning balance		$ 0
Issuances		83,411
Losses		86,907
Conversion		(170,318)
Fair value, ending balance		0	$ 0
Warrants \| Legacy Heliogen preferred stock warrants \| Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning balance		46
Issuances		0
Losses		2,965
Conversion		(3,011)
Fair value, ending balance		$ 0	$ 46