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Employee Benefits and Share-Based Compensation - Shared-based Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Share-based compensation expense $ 11,024 $ 8,505 $ 33,034 $ 25,175
Cost of product and service revenues        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Share-based compensation expense 1,758 1,316 5,658 4,194
Research and development        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Share-based compensation expense 1,577 1,652 5,199 4,938
Selling, general, and administrative        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Share-based compensation expense $ 7,689 $ 5,537 $ 22,177 $ 16,043