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Stock-Based Compensation - Summary of unvested liability classified incentive units (Details) - Liability Classified Incentive Unit Equivalents	9 Months Ended
	Sep. 30, 2021 $ / shares shares
Number of Shares
Beginning balance (in shares) | shares	2,851,516
Granted (in shares) | shares	320,000
Forfeited (in shares) | shares	(4,000)
Cancelled (in shares) | shares	(3,167,516)
Ending balance (in shares) | shares	0
Weighted- Average Grant Date Fair Value (per share)
Beginning balance (in dollars per share) | $ / shares	$ 1.74
Granted (in dollars per share) | $ / shares	8.19
Forfeited (in dollars per share) | $ / shares	6.58
Cancelled (in dollars per share) | $ / shares	2.39
Ending balance (in dollars per share) | $ / shares	$ 0

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other than Options, Cancelled in Period

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Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other than Options, Cancelled, Weighted Average Grant Date Fair Value

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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-Publisher FASB
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-Topic 718
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-Paragraph 2
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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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-Publisher FASB
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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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