XML 15 R5.htm IDEA: XBRL DOCUMENT v3.21.2
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      
Stock-based compensation expense 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      
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      
Shares forfeited in exchange for withholding taxes $ (181) (1,475,750) (1,475,931)
Shares forfeited in exchange for withholding taxes, shares (180,844)      
Net income (loss) (701,259) (701,259)
Ending balance, value at Sep. 30, 2020 $ 18,390 138,411,649 (117,636,371) 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      
Stock-based compensation expense 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      
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      
Shares forfeited in exchange for withholding taxes $ (179) (1,462,415) (1,462,594)
Shares forfeited in exchange for withholding taxes, shares (178,832)      
Net income (loss) 32,412 32,412
Ending balance, value at Sep. 30, 2020 $ 18,390 138,411,649 (117,636,371) 20,793,668
Balance, shares at Sep. 30, 2020 18,390,229      
Beginning balance, value at Dec. 31, 2020 $ 18,410 138,569,746 (116,376,715) 22,211,441
Balance, shares at Dec. 31, 2020 18,410,458      
Stock-based compensation expense 2,270,205 2,270,205
Exercise of stock options, net of cashless exercise of shares $ 299 46,171 46,470
Exercise of stock options, net of cashless exercise of shares, shares 299,179      
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 income (loss) (2,750,084) (2,750,084)
Ending balance, value at Sep. 30, 2021 $ 18,736 140,905,895 (119,126,799) 21,797,832
Balance, shares at Sep. 30, 2021 18,735,915      
Beginning balance, value at Jun. 30, 2021 $ 18,728 140,267,314 (118,174,566) 22,111,476
Balance, shares at Jun. 30, 2021 18,727,552      
Stock-based compensation expense 638,589 638,589
Issuance of shares for restricted stock grants $ 8 (8)
Issuance of shares for restricted stock grants, shares 8,363      
Net income (loss) (952,233) (952,233)
Ending balance, value at Sep. 30, 2021 $ 18,736 $ 140,905,895 $ (119,126,799) $ 21,797,832
Balance, shares at Sep. 30, 2021 18,735,915