Share-based Compensations - Recognized Share-based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Recognized share-based compensation
Total share-based compensation expense	$ 4,131	$ 2,942	$ 11,735	$ 9,562
Cost of Sales
Recognized share-based compensation
Total share-based compensation expense	620	389	1,765	1,384
Research and Development Expense
Recognized share-based compensation
Total share-based compensation expense	1,007	674	2,957	2,161
Selling, General and Administrative Expenses
Recognized share-based compensation
Total share-based compensation expense	$ 2,504	$ 1,879	$ 7,013	$ 6,017
Restricted Stock Awards | Minimum
Share-based compensation
Expiration term			1 year
Restricted Stock Awards | Maximum
Share-based compensation
Expiration term			5 years