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Subsequent Events (Details) - Subsequent Event
May 07, 2019
antibody_and_vaccine
protein
May 05, 2019
Apr. 26, 2019
Serum | Collaborative Arrangement      
Subsequent Event [Line Items]      
Number of antibodies and vaccines for development and commercialization | antibody_and_vaccine 12    
Option to obtain exclusive commercial sub-license for number of proteins | protein 12    
Research funding, milestone payments and royalties, period 15 years    
Novovet      
Subsequent Event [Line Items]      
Equity percentage     20.00%
Alphazyme      
Subsequent Event [Line Items]      
Equity percentage   7.50%  
Ownership interest consideration receivable upon extension of exclusivity period   2.50%  
Alphazyme | Collaborative Arrangement      
Subsequent Event [Line Items]      
Exclusivity period   18 months  
Option to extend exclusivity period   12 months