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CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Income Statement [Abstract]    
Revenues, net $ 3,773,392 $ 3,985,464
Cost of goods sold 633,623 659,635
Gross profit 3,139,769 3,325,829
Operating expenses:    
Sales, general, and administrative 20,757,237 16,837,617
Research and development 7,039,297 7,724,840
Depreciation and amortization 59,621 49,699
Total operating expenses 27,856,155 24,612,156
Operating loss (24,716,386) (21,286,327)
Other income    
Miscellaneous income 314,557 125,968
Accreted interest 3,867
Total other income 314,557 129,835
Loss before income taxes (24,401,829) (21,156,492)
Net loss $ (24,401,829) $ (21,156,492)
Loss per share, basic and diluted:    
Net loss per share, basic and diluted (in dollars per share) $ (0.11) $ (0.11)
Weighted average number of common shares outstanding, basic and diluted (in shares) 216,525,316 197,790,040