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Employee Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2021
Performance Market and Service Condition Based Restricted Stock Unit Grants |
Schedule of Share-based Payment Award, Restricted Stock Unit, Valuation Assumptions | The average grant date fair value for these RSUs, with consideration of the market condition, was $47.85 per unit, which was determined using the Monte Carlo simulation model using the following assumptions:
Expected volatility (company) | 51.3% |
Expected volatility (peer group median) | 42.9% |
Correlation between the Company and peer group median | 0.6 |
Expected dividend yield | 0.0% |
Risk-free rate | 0.3% |

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of restricted stock units subject to market conditions. + References No definition available. + Details
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