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Commitments and Contingencies (Details) - USD ($)
May. 31, 2015
Apr. 30, 2015
Operating lease entered into May 2015 | Manufacturing facility    
Leases    
Annual rent $ 66,000  
Operating lease entered into May 2015 | Office and laboratory space    
Leases    
Annual rent for 2016 1,100,000  
Annual rent owed in 2017 $ 1,200,000  
Operating leases entered into April 2015 | Office Space    
Leases    
Annual rent owed in 2017   $ 300,000