XML 90 R52.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Nature of Business and Significant Accounting Policies (Details 3) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Stock-based compensation expense $ 36,689 $ 34,170 $ 31,018
Cost of goods sold      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Stock-based compensation expense 3,704 3,157 2,665
Research and development      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Stock-based compensation expense 6,595 6,697 5,068
Selling General and Administrative Expense      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Stock-based compensation expense $ 26,390 $ 24,316 $ 23,285