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Share-Based Compensation - Schedule of Share-Based Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Total share-based compensation expense $ 5,298 $ 4,800 $ 9,775 $ 11,080
Cost of Goods Sold        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Total share-based compensation expense 259 80 384 170
Selling, General and Administrative        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Total share-based compensation expense 4,309 4,031 7,946 9,484
Research and Development        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Total share-based compensation expense $ 730 $ 689 $ 1,445 $ 1,426