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Stock-Based Compensation - Fair Value Assumptions (Details) - Common stock options - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Share-based Compensation Arrangements
Expected life (years)	5 years 9 months 18 days	6 years	5 years 10 months 24 days	6 years
Expected volatility	56.00%	52.00%	55.00%	49.00%
Risk-free interest rate	2.90%	1.10%	2.50%	1.10%
Expected dividend rate	0.00%	0.00%	0.00%	0.00%
Weighted-average fair value (in dollars per share)	$ 20.07	$ 3.59	$ 19.15	$ 3.14
Employee stock purchase plan
Share-based Compensation Arrangements
Expected life (years)	9 months 18 days
Expected volatility	57.00%
Risk-free interest rate	1.80%
Expected dividend rate	0.00%
Weighted-average fair value (in dollars per share)	$ 12.25

X

- 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.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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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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-Publisher FASB
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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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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.

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Weighted average grant-date fair value of options vested.

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