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STATEMENTS OF CHANGES IN STOCKHOLDER'S EQUITY (Unaudited) - USD ($) | Preferred Stock B [Member] | Preferred Stock C [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Treasury Stock [Member] | Total
--- | --- | --- | --- | --- | --- | --- | ---
Beginning balance, value at Dec. 31, 2019 | $ 1,705,000 |  | $ 1,982 | $ 31,063,915 | $ (32,740,715) | $ (157,452) | $ (127,270)
Beginning balance, Shares at Dec. 31, 2019 | 1,705 |  | 1,982,039 |  |  |  |
Common stock issued |  |  | $ 1,542 | 9,251,586 |  |  | 9,253,128
Common stock issued, shares |  |  | 1,542,188 |  |  |  |
Stock options granted to employees |  |  |  | 8,100 |  |  | 8,100
Stock issuance cost |  |  |  | (1,001,885) |  |  | (1,001,885)
Common stock issued for services |  |  | $ 2 | 7,498 |  |  | 7,500
Common stock issued for services, shares |  |  | 1,611 |  |  |  |
Net loss |  |  |  |  | (2,147,049) |  | (2,147,049)
Ending balance, value at Mar. 31, 2020 | $ 1,705,000 |  | $ 3,526 | 39,329,214 | (34,887,764) | (157,452) | 5,992,524
End balance, Shares at Mar. 31, 2020 | 1,705 |  | 3,525,838 |  |  |  |
Modification of employee stock options |  |  |  | 102,800 |  |  | 102,800
Stock options granted to employees |  |  |  | 88,170 |  |  | 88,170
Common stock issued for services |  |  | $ 2 | 7,498 |  |  | 7,500
Common stock issued for services, shares |  |  | 1,632 |  |  |  |
Net loss |  |  |  |  | (1,465,889) |  | (1,465,889)
Ending balance, value at Jun. 30, 2020 | $ 1,705,000 |  | $ 3,528 | 39,527,682 | (36,353,653) | (157,452) | 4,725,105
End balance, Shares at Jun. 30, 2020 | 1,705 |  | 3,527,470 |  |  |  |
Stock options granted to employees |  |  |  | 165,491 |  |  | 165,491
Common stock issued for services |  |  | $ 8 | 37,492 |  |  | 37,500
Common stock issued for services, shares |  |  | 7,869 |  |  |  |
Net loss |  |  |  |  | (2,708,579) |  | (2,708,579)
Ending balance, value at Sep. 30, 2020 | $ 1,705,000 |  | $ 3,536 | 39,730,665 | (39,062,232) | (157,452) | 2,219,517
End balance, Shares at Sep. 30, 2020 | 1,705 |  | 3,535,339 |  |  |  |
Beginning balance, value at Dec. 31, 2020 | $ 1,705,000 |  | $ 3,536 | 39,820,874 | (39,488,150) | (157,452) | 1,883,808
Beginning balance, Shares at Dec. 31, 2020 | 1,705 |  | 3,535,339 |  |  |  |
Stock options granted to employees |  |  |  | 76,301 |  |  | 76,301
Series C preferred stock issued |  | $ 4,500,000 |  |  |  |  | 4,500,000
Series C preferred stock issued, Shares |  | 4,500 |  |  |  |  |
Net loss |  |  |  |  | (406,023) |  | (406,023)
Ending balance, value at Mar. 31, 2021 | $ 1,705,000 | $ 4,500,000 | $ 3,536 | 39,897,175 | (39,894,173) | (157,452) | 6,054,086
End balance, Shares at Mar. 31, 2021 | 1,705 | 4,500 | 3,535,339 |  |  |  |
Stock options granted to employees |  |  |  | $ 76,862 |  |  | $ 76,862
Common stock issued for cashless warrants exercised |  |  | 50 | (50) |  |  |
Commons stock issued for cash less warrants exercised, Shares |  |  | 50,588 |  |  |  |
Net loss |  |  |  |  | $ (2,952,880) |  | $ (2,952,880)
Ending balance, value at Jun. 30, 2021 | $ 1,705,000 | $ 4,500,000 | $ 3,586 | 39,973,987 | (42,847,053) | (157,452) | 3,178,068
End balance, Shares at Jun. 30, 2021 | 1,705 | 4,500 | 3,585,927 |  |  |  |
Stock options granted to employees |  |  |  | 62,590 |  |  | 62,590
Common stock issued for services |  |  | $ 11 | 74,989 |  |  | 75,000
Common stock issued for services, shares |  |  | 11,255 |  |  |  |
Common stock issued for cashless employee stock options exercised |  |  | $ 15 | (15) |  |  |
Common stock issued for cashless employee stock options exercised ,shares |  |  | 14,576 |  |  |  |
Rounding-split in 2020 (367 shares) |  |  | $ 0 | (0) |  |  |
Rounding-split in 2020 (367 shares) ,shares |  |  | 367 |  |  |  |
Net loss |  |  |  |  | (2,450,437) |  | (2,450,437)
Ending balance, value at Sep. 30, 2021 | $ 1,705,000 | $ 4,500,000 | $ 3,612 | $ 40,111,551 | $ (45,297,490) | $ (157,452) | $ 865,221
End balance, Shares at Sep. 30, 2021 | 1,705 | 4,500 | 3,612,125 |  |  |  |

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