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Statements of Stockholders' Equity (Unaudited) - USD ($)
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Beginning balance, value at Dec. 31, 2019 $ 16,042 $ 128,668,583 $ (116,935,112) $ 11,749,513
Balance, shares at Dec. 31, 2019 16,041,650      
Equity compensation 286,909 286,909
Issuance of common stock, net of costs $ 1,769 10,567,698 10,569,467
Issuance of common stock, net of costs. shares 1,769,230      
Exercise of stock options, net of cashless exercise of shares $ 674 167,934 168,608
Exercise of stock options, net of cashless exercise of shares, shares 674,171      
Exercise of warrants $ 51 111,599 111,650
Exercise of warrants, shares 50,750      
Issuance of shares for restricted stock grants $ 20 (20)
Issuance of shares for restricted stock grants, shares 20,279      
Shares withheld for withholding taxes $ (181) (1,475,750) (1,475,931)
Shares withheld for withholding taxes, shares (180,844)      
Settlement of executive bonuses with issuance of restricted stock units $ 15 84,696 84,711
Settlement of executive bonuses with issuance of restricted stock units, shares 14,993      
Exercise of liability awards 3,042,394 3,042,394
Net loss (3,743,653) (3,743,653)
Ending balance, value at Sep. 30, 2020 $ 18,390 141,454,043 (120,678,765) 20,793,668
Balance, shares at Sep. 30, 2020 18,390,229      
Beginning balance, value at Jun. 30, 2020 $ 18,028 139,715,197 (117,668,783) 22,064,442
Balance, shares at Jun. 30, 2020 18,028,282      
Equity compensation 97,157 97,157
Exercise of stock options, net of cashless exercise of shares $ 527 28,823 29,350
Exercise of stock options, net of cashless exercise of shares, shares 527,214      
Exercise of warrants $ 1 1,649 1,650
Exercise of warrants, shares 750      
Issuance of shares for restricted stock grants $ 7 (7)
Issuance of shares for restricted stock grants, shares 7,284      
Shares withheld for withholding taxes $ (179) (1,462,415) (1,462,594)
Shares withheld for withholding taxes, shares (178,832)      
Settlement of executive bonuses with issuance of restricted stock units $ 6 31,245 31,251
Settlement of executive bonuses with issuance of restricted stock units, shares 5,531      
Exercise of liability awards 3,042,394 3,042,394
Net loss (3,009,982) (3,009,982)
Ending balance, value at Sep. 30, 2020 $ 18,390 141,454,043 (120,678,765) 20,793,668
Balance, shares at Sep. 30, 2020 18,390,229      
Beginning balance, value at Dec. 31, 2020 $ 18,410 141,612,140 (119,419,109) 22,211,441
Balance, shares at Dec. 31, 2020 18,410,458      
Equity compensation 2,270,205 2,270,205
Exercise of stock options, net of cashless exercise of shares $ 207 1,755,209 1,755,416
Exercise of stock options, net of cashless exercise of shares, shares 206,545      
Exercise of warrants $ 9 19,791 19,800
Exercise of warrants, shares 9,000      
Issuance of shares for restricted stock grants $ 18 (18)
Issuance of shares for restricted stock grants, shares 17,278      
Net loss (6,486,322) (6,486,322)
Ending balance, value at Sep. 30, 2021 $ 18,644 145,657,327 (125,905,431) 19,770,540
Balance, shares at Sep. 30, 2021 18,643,281      
Beginning balance, value at Jun. 30, 2021 $ 18,636 145,018,746 (124,879,719) 20,157,663
Balance, shares at Jun. 30, 2021 18,634,918      
Equity compensation 638,589 638,589
Issuance of shares for restricted stock grants $ 8 (8)
Issuance of shares for restricted stock grants, shares 8,363      
Net loss (1,025,712) (1,025,712)
Ending balance, value at Sep. 30, 2021 $ 18,644 $ 145,657,327 $ (125,905,431) $ 19,770,540
Balance, shares at Sep. 30, 2021 18,643,281