XML 51 R34.htm IDEA: XBRL DOCUMENT v3.20.4
Summary of Significant Accounting Policies - Summary of Stock-based Compensation Expense Included in Statements of Operations (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Stock-based compensation expense $ 84,422 $ 82,265 $ 81,564
Cost of product sales      
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Stock-based compensation expense 2,632 2,936 3,863
Research and development      
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Stock-based compensation expense 31,314 32,533 32,038
Sales, general and administrative      
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Stock-based compensation expense $ 50,476 $ 46,796 $ 45,663