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STOCK-BASED COMPENSATION - Compensation Expense (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Restricted Stock Units    
Share-based Compensation Arrangement by Share-based Payment Award    
Compensation expense $ 29,493 $ 24,497
Fair value of units vested 29,671 11,188
Intrinsic value of units vested 39,752 13,475
Options    
Share-based Compensation Arrangement by Share-based Payment Award    
Compensation expense 227 1,694
Compensation expense, net of tax 174 1,289
Grant date fair value of options vested 2,421 7,601
Options | Selling Research And Development And Administrative Expenses    
Share-based Compensation Arrangement by Share-based Payment Award    
Compensation expense 185 1,409
Options | Cost of Sales    
Share-based Compensation Arrangement by Share-based Payment Award    
Compensation expense $ 42 $ 285