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Fixed Assets (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Property, Plant and Equipment [Line Items]      
Cost $ 25,948,933 $ 25,426,733  
Accumulated Depreciation and Amortization (9,999,919) (7,106,557)  
Net Book Value 15,949,014 18,320,176  
Depreciation 3,747,183 1,850,376 $ 1,708,498
Leasehold improvements      
Property, Plant and Equipment [Line Items]      
Cost 14,909,341 14,553,993  
Accumulated Depreciation and Amortization (3,464,444) (2,042,871)  
Net Book Value 11,444,897 12,511,122  
Laboratory equipment      
Property, Plant and Equipment [Line Items]      
Cost 4,031,965 3,787,578  
Accumulated Depreciation and Amortization (2,425,854) (1,724,946)  
Net Book Value 1,606,111 2,062,632  
Office furniture and fixtures      
Property, Plant and Equipment [Line Items]      
Cost 3,198,803 3,366,896  
Accumulated Depreciation and Amortization (1,767,653) (1,471,705)  
Net Book Value 1,431,150 1,895,191  
Computer equipment and other      
Property, Plant and Equipment [Line Items]      
Cost 3,808,824 3,718,266  
Accumulated Depreciation and Amortization (2,341,968) (1,867,035)  
Net Book Value $ 1,466,856 $ 1,851,231