Stock-Based Compensation - Stock option valuation (Details) - shares	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
2020 Employee Stock Option and Incentive Plan
Stock-Based Compensation
Risk-free interest rate	2.70%	1.10%
Expected volatility	67.00%	65.00%
Expected dividend yield	0.00%	0.00%
Expected term (in years)	6 years	6 years
2020 ESPP
Stock-Based Compensation
Shares issued	56,486	0
Risk-free interest rate	3.20%
Expected volatility	90.00%
Expected dividend yield	0.00%
Expected term (in years)	6 months

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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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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.

+ References

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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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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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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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Number of new stock issued during the period.

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