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Share-Based Employee Compensation (Tables)
9 Months Ended
Sep. 30, 2021
Share-based Payment Arrangement [Abstract]  
Summary of Weighted Average Fair Value Assumptions The table below summarizes the range and the weighted averages of the fair value assumptions used in the valuation as of March 8, 2021.
Assumptions:RangeWeighted Averages
Expected term (in years)
0.3 - 7.1
3.7
Volatility
43.0% - 85.4%
55.1%
Risk free interest rate
0.1% -1.3%
0.6%
Dividend yield
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs
The table below summarizes the amounts recognized in the financial statements for the three and nine months ended September 30, 2021 and 2020 for share-based compensation, including expense for restricted stock units, performance based awards units and stock options (in thousands).
Three Months Ended September 30,Nine Months Ended
September 30,
2021202020212020
Cost of products$345 $158 $892 $553 
Selling, general and administrative expenses10,867 2,930 25,548 7,044 
Research and development expenses263 184 683 469 
Total cost of share-based compensation included in income, before income tax11,475 3,272 27,123 8,066 
Income tax benefit2,754 785 6,510 1,936 
Total cost of employee share-based compensation, after tax$8,721 $2,487 $20,613 $6,130