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Technology License Agreements - Massachusetts Eye and Ear Infirmary and The Schepens Eye Research Institute, Inc. (Narrative) (Details) - MEE
1 Months Ended 8 Months Ended
May 31, 2016
USD ($)
product
Dec. 31, 2016
USD ($)
Minimum    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Minimum number of products for each target sequence | product 1  
Payment under development milestone method $ 4,175,000  
Payment under sales milestone method 50,000,000  
Maximum    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Payment under development milestone method 37,025,000  
Payment under sales milestone method $ 70,000,000  
Initial license fee paid   $ 100,000