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Share-Based Employee Compensation (Tables)
9 Months Ended
Sep. 30, 2020
Share-based Payment Arrangement [Abstract]  
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, 2020 and 2019 for share-based compensation, including expense for restricted stock units and performance share units (in thousands).
 
Three Months Ended September 30,
 
Nine Months Ended
September 30,
 
2020
 
2019
 
2020
 
2019
 
 
 
 
Cost of sales
$
158

 
$
213

 
$
553

 
$
715

Operating expenses
3,114

 
2,300

 
7,513

 
8,763

Total cost of share-based compensation included in income, before income tax
$
3,272

 
$
2,513

 
$
8,066

 
$
9,478