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STOCK-BASED COMPENSATION (Tables)
6 Months Ended
Jun. 30, 2021
Share-based Payment Arrangement [Abstract]  
Summary of stock based compensation expense Expense
Three Months Ended
June 30,
Six Months Ended
June 30,
(in thousands)2021202020212020
Cost of revenue
$5,849 $5,384 $11,774 $10,536 
Selling and marketing
14,748 11,592 28,468 21,310 
Research and development
6,343 5,805 13,113 11,302 
General and administrative
3,748 2,874 7,433 5,683 
$30,688 $25,655 $60,788 $48,831 
Income tax benefit
$(6,192)$(5,107)$(12,183)$(9,689)
Summary of stock based compensation award granted Grants
Six Months Ended
June 30, 2021
(in thousands)SharesTotal Fair Value
RSUs
753 $97,483 
Non-qualified stock options
1,368 $51,594