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Property and Equipment - Schedule of Property and Equipment (Details) - USD ($)
Dec. 31, 2017
Dec. 31, 2016
Property Plant And Equipment [Line Items]    
Property and equipment, gross $ 3,413,445 $ 2,747,424
Less accumulated depreciation (2,376,585) (1,940,338)
Property and equipment, net 1,036,860 807,086
Lab Equipment    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 1,914,911 1,314,060
Computer Equipment    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 169,366 165,415
Computer Software    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 299,227 299,227
Furniture and Fixtures    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 202,218 184,233
Tenant Improvements    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 763,898 763,898
Other Office Equipment    
Property Plant And Equipment [Line Items]    
Property and equipment, gross $ 63,825 $ 20,591