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Consolidated Statements of Stockholders' Equity - USD ($)
Series 1 Convertible Preferred Stock
Series 2 Convertible Preferred Stock
Common Stock
Additional Paid in Capital
Accumulated Deficit
Total
Balance at Dec. 31, 2018 $ 1,197,025 $ 21,952,000 $ 1,758 $ 30,074,488 $ (48,732,595) $ 8,492,676
Balance, shares at Dec. 31, 2018 239,405 21,952 17,294,870      
Provision for compensation expense related to stock options 595,833 595,833
Refund of cost related to equity raise 61,509 61,509
Issuance of warrants in connection with consulting agreement 127,561 127,561
Issuance of warrants in connection with consulting agreement, shares      
Exercise of stock options into common stock $ 8 69,398 69,406
Exercise of stock options into common stock, shares 82,667      
Conversion of preferred stock to common stock $ (341,070) $ 9 341,061
Conversion of preferred stock to common stock, shares (68,214) 86,323      
Exercise of warrants into common stock $ 4 43,871 43,875
Exercise of warrants into common stock, shares 35,100      
Net income/ (loss) 577,415 577,415
Balance at Dec. 31, 2019 $ 855,955 $ 21,952,000 $ 1,779 35,313,721 (48,155,180) 9,968,275
Balance, shares at Dec. 31, 2019 171,191 21,952 17,783,960      
Provision for compensation expense related to stock options 981,261 981,261
Issuance of warrants in connection with consulting agreement 407,494 407,494
Exercise of stock options into common stock $ 1 5,661 5,662
Exercise of stock options into common stock, shares     7,166      
Conversion of preferred stock to common stock $ (4,295) 4,295
Conversion of preferred stock to common stock, shares (859) 1,136      
Exercise of warrants into common stock     $ 10 131,240 131,250
Exercise of warrants into common stock, shares     105,000      
Exchange offer of warrants $ 346 (346)
Exchange offer of warrants, shares 3,462,683      
Net income/ (loss)         (339,896) (339,896)
Balance at Dec. 31, 2020 $ 851,660 $ 21,952,000 $ 2,136 $ 36,843,326 $ (48,495,076) $ 11,154,046
Balance, shares at Dec. 31, 2020 170,332 21,952 21,359,945