v3.3.1.900
Stock-Based Compensation - Stock-Based Compensation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Stock-Based Compensation      
Allocated share-based compensation expense $ 21,839 $ 14,683 $ 18,353
Stock-Based Compensation      
Unrecognized compensation expense $ 33,100    
Future forfeiture rate (as a percent) 2.00%    
Period for recognition of compensation cost 2 years    
Research and development expenses      
Stock-Based Compensation      
Allocated share-based compensation expense $ 4,570 2,403 3,478
Selling, general and administrative expenses      
Stock-Based Compensation      
Allocated share-based compensation expense $ 17,269 $ 12,280 $ 14,875