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Disaggregates of Total Revenues from External Customers and Collaborative Partners by Geographic Region (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Revenue from External Customer [Line Items]      
Total revenues $ 1,704,048 $ 1,491,212 $ 1,313,646
United States      
Revenue from External Customer [Line Items]      
Total revenues 778,440 696,793 588,243
Europe      
Revenue from External Customer [Line Items]      
Total revenues 509,188 436,434 398,814
Latin America      
Revenue from External Customer [Line Items]      
Total revenues 218,792 185,046 181,970
Rest of world      
Revenue from External Customer [Line Items]      
Total revenues $ 197,628 $ 172,939 $ 144,619