Stock-Based Compensation - Summary of Exercise Price Range (Details) - $ / shares	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Expected volatility		65.80%	60.00%
Weighted-average expected volatility	66.15%	65.80%	60.00%
Risk-free interest rate		0.10%
Dividend yield	0.00%	0.00%	0.00%
Class A common stock
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Fair value (in dollars per share)		$ 5.49	$ 0.77
Minimum
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Expected volatility	49.60%
Expected term (in years)	5 years	6 months	3 years
Risk-free interest rate	0.71%		1.40%
Fair value (in dollars per share)	$ 7.62
Maximum
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Expected volatility	67.70%
Expected term (in years)	6 years 21 days	1 year 5 months 26 days	5 years
Risk-free interest rate	1.26%		1.43%
Fair value (in dollars per share)	$ 11.60

Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award.

No definition available.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Rate of weighted-average expected volatility for award under share-based payment arrangement.

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- Definition

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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No definition available.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
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-Publisher FASB
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