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Stock-Based Compensation - Total stock-based compensation expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Stock-Based Compensation        
Stock-based compensation expense $ 5,976 $ 5,366 $ 16,960 $ 14,749
Cost of revenues        
Stock-Based Compensation        
Stock-based compensation expense 604 690 1,655 1,868
Selling, general and administrative        
Stock-Based Compensation        
Stock-based compensation expense 4,904 4,194 13,973 11,541
Engineering and development        
Stock-Based Compensation        
Stock-based compensation expense $ 468 $ 482 $ 1,332 $ 1,340