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Stock-Based Compensation - FV of Employee Stock Options (Details) | 3 Months Ended | 6 Months Ended
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Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Stock options |  |  |  |
Weighted average assumptions for estimated fair value of employee stock options |  |  |  |
Expected term (years) | 6 years 4 months 24 days | 6 years 6 months | 6 years 4 months 24 days | 6 years 1 month 6 days
Expected volatility (as a percent) | 50.40% | 51.20% | 50.10% | 50.50%
Risk-free interest rate (as a percent) | 4.42% | 3.69% | 4.18% | 4.17%
Expected dividend yield | 0.00% | 0.00% | 0.00% | 0.00%
ESPP |  |  |  |
Weighted average assumptions for estimated fair value of employee stock options |  |  |  |
Expected volatility, low end of range (as a percent) | 43.00% | 38.20% | 43.00% | 38.20%
Expected volatility, high end of range (as a percent) | 44.60% | 55.70% | 44.60% | 55.70%
Risk-free interest rate, low end of range (as a percent) | 4.71% | 0.13% | 4.71% | 0.13%
Risk-free interest rate, high end of range (as a percent) | 5.40% | 5.39% | 5.40% | 5.39%
Expected dividend yield | 0.00% | 0.00% | 0.00% | 0.00%
ESPP | Minimum |  |  |  |
Weighted average assumptions for estimated fair value of employee stock options |  |  |  |
Expected term (years) | 6 months | 6 months | 6 months | 6 months
ESPP | Maximum |  |  |  |
Weighted average assumptions for estimated fair value of employee stock options |  |  |  |
Expected term (years) | 2 years | 2 years | 2 years | 2 years

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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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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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. + Details
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- Definition 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. + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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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. + Details
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- Definition The minimum risk-free interest rate assumption that is used in valuing an option on its own shares. + References No definition available. + Details
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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://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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