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Fair Value Measurement - Additional Information (Detail)
3 Months Ended 9 Months Ended
Sep. 30, 2013
Novozymes Biopharma DK A/S Sweden Ab
Earn Out Payment
EUR (€)
Sep. 30, 2013
Novozymes Biopharma DK A/S Sweden Ab
Earn Out Payment
EUR (€)
Sep. 30, 2013
Bio Flash Partners Limited Liability Company
Minimum
USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Business acquisition, contingent payment € 1,000,000 € 1,000,000  
Minimum royalty payment     $ 55,000