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Stock-based Compensation - Assumptions Used (Details)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life (years)	5 years 9 months 18 days	5 years 8 months 12 days	5 years 7 months 6 days
Volatility	66.20%	62.10%	52.50%
Risk-free interest rate	4.00%	3.10%	0.80%
Expected dividend yield	0.00%	0.00%	0.00%
Nonemployee Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life (years)	5 years 9 months 18 days	0 years	5 years 7 months 6 days
Volatility	70.10%	0.00%	54.10%
Risk-free interest rate	4.70%	0.00%	0.90%
Expected dividend yield	0.00%	0.00%	0.00%
PBOs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life (years)		5 years 7 months 6 days	5 years 6 months
Volatility		54.90%	51.90%
Risk-free interest rate		1.80%	0.70%
Expected dividend yield		0.00%	0.00%
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life (years)	4 months 24 days
Volatility	89.60%
Risk-free interest rate	5.30%
Expected dividend yield	0.00%

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

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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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- 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.

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