XML 20 R5.htm IDEA: XBRL DOCUMENT v3.20.1
Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
Total
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Balance at Dec. 31, 2018 $ 90,264,769 $ 3,894 $ 304,813,603 $ (214,552,728)
Balance (in shares) at Dec. 31, 2018   38,937,971    
Exercise of stock options 525,000 $ 9 524,991  
Exercise of stock options (in shares)   87,500    
Stock-based compensation 2,461,699   2,461,699  
Net loss (15,827,200)     (15,827,200)
Balance at Mar. 31, 2019 77,424,268 $ 3,903 307,800,293 (230,379,928)
Balance (in shares) at Mar. 31, 2019   39,025,471    
Balance at Dec. 31, 2019 $ 27,779,543 $ 3,908 314,511,853 (286,736,218)
Balance (in shares) at Dec. 31, 2019 39,084,121 39,084,121    
Exercise of stock options $ 797,629 $ 14 797,615  
Exercise of stock options (in shares)   135,013    
Stock-based compensation 2,198,187   2,198,187  
Net loss (12,151,165)     (12,151,165)
Balance at Mar. 31, 2020 $ 18,624,194 $ 3,922 $ 317,507,655 $ (298,887,383)
Balance (in shares) at Mar. 31, 2020 39,219,134 39,219,134