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Segments and Geographic Information - Additional Information (Detail)
$ in Thousands
1 Months Ended 12 Months Ended
Nov. 30, 2016
USD ($)
Dec. 31, 2016
USD ($)
Segment
Customer
Dec. 31, 2015
USD ($)
Customer
Dec. 31, 2014
USD ($)
Customer
Revenues from External Customers and Long-Lived Assets [Line Items]        
Number of operating segments | Segment   2    
One time payment, royalty revenues | $   $ 14,297 $ 3,745 $ 5,599
Concentration risk percentage   100.00% 100.00% 100.00%
Number of customers | Customer   2 1  
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | Other Countries [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Concentration risk percentage   50.00%    
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | Service [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Customers accounted for 10% or more of total revenues | Customer   0 0 2
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | Customer One [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Concentration risk percentage       11.00%
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | Customer Two [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Concentration risk percentage       10.00%
Credit Concentration Risk [Member] | Accounts Receivable [Member] | Customer One [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Concentration risk percentage   18.00% 18.00%  
Credit Concentration Risk [Member] | Accounts Receivable [Member] | Customer Two [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Concentration risk percentage   13.00%    
Allergan [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
One time payment, royalty revenues | $ $ 11,000 $ 11,000    
Allergan [Member] | Credit Concentration Risk [Member] | Accounts Receivable [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Concentration risk percentage     42.00%  
Merck KGaA [Member] | Credit Concentration Risk [Member] | Accounts Receivable [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Concentration risk percentage   100.00% 58.00%