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Business Acquisitions - Additional Information (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Apr. 12, 2017
Dec. 08, 2016
Jan. 05, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Business Acquisition [Line Items]            
Total purchase price, net of cash received       $ 4,446 $ 271,458  
Goodwill       $ 332,996   $ 327,724
InPharmics LLC            
Business Acquisition [Line Items]            
Total purchase price, net of cash received $ 5,000          
Cash on hand at signing 300          
Contingent consideration liability 500          
Intangibles $ 1,900          
Aesynt Holding, L.P., Aesynt, Ltd.            
Business Acquisition [Line Items]            
Total purchase price, net of cash received     $ 271,458      
Cash on hand at signing     8,164      
Intangibles     123,700      
Goodwill     $ 163,599      
Aesynt Holding, L.P., Aesynt, Ltd. | Minimum            
Business Acquisition [Line Items]            
In process research and development, expected term (in years)       2 years    
Aesynt Holding, L.P., Aesynt, Ltd. | Maximum            
Business Acquisition [Line Items]            
In process research and development, expected term (in years)       3 years    
Aesynt Holding, L.P., Aesynt, Ltd. | In-process research and development (IPR&D)            
Business Acquisition [Line Items]            
Royalty rate       12.50%    
Aesynt Holding, L.P., Aesynt, Ltd. | Trade names            
Business Acquisition [Line Items]            
Royalty rate       0.50%    
Aesynt Holding, L.P., Aesynt, Ltd. | Developed technology | Minimum            
Business Acquisition [Line Items]            
Royalty rate       4.00%    
Aesynt Holding, L.P., Aesynt, Ltd. | Developed technology | Maximum            
Business Acquisition [Line Items]            
Royalty rate       8.00%    
Aesynt Holding, L.P., Aesynt, Ltd. | Customer relationships            
Business Acquisition [Line Items]            
Discount rate       13.00%    
Aesynt Holding, L.P., Aesynt, Ltd. | Backlog            
Business Acquisition [Line Items]            
Discount rate       10.00%    
Aesynt Holding, L.P., Aesynt, Ltd. | Non-compete            
Business Acquisition [Line Items]            
Discount rate       13.00%    
Ateb            
Business Acquisition [Line Items]            
Total purchase price, net of cash received   $ 40,700        
Cash on hand at signing   902        
Intangibles   12,500        
Goodwill   $ 20,895        
Ateb | Trade names            
Business Acquisition [Line Items]            
Royalty rate           0.50%
Ateb | Developed technology | Minimum            
Business Acquisition [Line Items]            
Royalty rate           5.00%
Ateb | Developed technology | Maximum            
Business Acquisition [Line Items]            
Royalty rate           6.00%
Ateb | Customer relationships            
Business Acquisition [Line Items]            
Discount rate           15.00%