Stock-Based Compensation Expense - Schedule of Range and Weighted-average Assumptions Used in Black-Scholes Option Pricing Model to Determine the Fair Value of Stock Options (Details)	9 Months Ended
Sep. 30, 2021 $ / shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected volatility, Minimum	62.30%
Expected volatility, Maximum	63.70%
Risk-free interest rate, Minimum	0.60%
Risk-free interest rate, Maximum	1.60%
Expected dividend yield	0.00%
Expected volatility, Weighted Average	63.30%
Risk-free interest rate, Weighted Average	1.00%
Expected life (in years), Weighted Average	6 years
Expected dividend yield, Weighted Average	0.00%
Grant date fair value, Weighted Average	$ 15.51
Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected life (in years)	10 years
Grant date fair value	$ 19.94
Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected life (in years)	5 years 6 months 7 days
Grant date fair value	$ 12.54

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Grant Date Fair Value.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Expected dividend yield.

+ References

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Expected Life.

+ References

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Grant Date Fair Value.

+ References

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Risk-free Interest Rate.

+ References

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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.

+ References

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- Definition

The estimated measure of the maximum 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

No definition available.

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The estimated measure of the minimum 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

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

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

+ References

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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.

+ References

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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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