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STOCK-BASED COMPENSATION
 6 Months Ended
Jun. 30, 2022
Share-Based Payment Arrangement [Abstract]  
STOCK-BASED COMPENSATION STOCK-BASED COMPENSATION
The Company has stockholder-approved equity incentive plans that provide for the granting of service-based restricted stock units (RSUs), market-based RSUs, performance-based RSUs, stock options and common stock granted under the Company’s Employee Share Purchase Plan (ESPP) to its employees, officers and non-employee directors. Compensation expense included in the Company’s Condensed Consolidated Statements of Comprehensive Income for all stock-based compensation arrangements was as follows: 
Three Months Ended
June 30,		Six Months Ended
June 30,
2022202120222021
Cost of sales$4,762 $6,087 $9,088 $12,568 
Research and development13,633 20,816 30,823 38,333 
Selling, general and administrative28,683 27,940 55,000 53,445 
Total stock-based compensation expense$47,078 $54,843 $94,911 $104,346