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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' DEFICIT (UNAUDITED) - USD ($)
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
Total
Balance at beginning at Dec. 31, 2018 $ 11,718 $ 70,651,413 $ (74,596,536) $ (3,933,405)
Balance at beginning (in shares) at Dec. 31, 2018 11,718,246      
Net loss     (934,716) (934,716)
Costs related to stock offering   (64,371)   (64,371)
Common stock issued upon exercise of options (in shares) 521      
Stock-based compensation expense $ 18 330,769   330,787
Stock-based compensation expense (in shares) 17,619      
Balance at ending at Mar. 31, 2019 $ 11,736 70,917,811 (75,531,252) (4,601,705)
Balance at ending (in shares) at Mar. 31, 2019 11,736,386      
Balance at beginning at Dec. 31, 2019 $ 11,819 71,294,629 (79,046,688) $ (7,740,240)
Balance at beginning (in shares) at Dec. 31, 2019 11,818,830     11,818,830
Net loss     (2,812,519) $ (2,812,519)
Stock-based compensation expense $ 18 347,167   347,185
Stock-based compensation expense (in shares) 18,388      
Balance at ending at Mar. 31, 2020 $ 11,837 $ 71,641,796 $ (81,859,207) $ (10,205,574)
Balance at ending (in shares) at Mar. 31, 2020 11,837,218     11,837,218