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Property and Equipment - Schedule of Property and Equipment (Details) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Property Plant And Equipment [Line Items]    
Property and equipment, gross $ 4,097,391 $ 3,413,445
Less accumulated depreciation (2,696,800) (2,376,585)
Property and equipment, net 1,400,591 1,036,860
Lab Equipment    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 2,503,086 1,914,911
Computer Equipment    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 113,248 169,366
Computer Software    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 193,694 299,227
Furniture and Fixtures    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 266,960 202,218
Tenant Improvements    
Property Plant And Equipment [Line Items]    
Property and equipment, gross 894,304 763,898
Other Office Equipment    
Property Plant And Equipment [Line Items]    
Property and equipment, gross $ 126,099 $ 63,825