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Statements - Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)
Preferred Stock [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Treasury Stock [Member]
Retained Earnings [Member]
Total
Beginning balance, value at Dec. 31, 2019 $ 775 $ 13,894,680 $ (3,714,255) $ 10,181,200
Beginning balance, shares at Dec. 31, 2019 7,745,030        
Stock options exercised $ 3 19,962 19,965
Stock options exercised, shares   22,500        
Stock options repurchased (26,667) (26,667)
Net loss (income) (122,586) (122,586)
Ending balance, value at Sep. 30, 2020 $ 778 13,887,975 (3,836,841) 10,051,912
Ending balance, shares at Sep. 30, 2020 7,767,530        
Beginning balance, value at Jun. 30, 2020 $ 777 13,902,047 (4,704,925) 9,197,899
Beginning balance, shares at Jun. 30, 2020 7,760,030        
Stock options exercised $ 1 6,749 6,750
Stock options exercised, shares   7,500        
Stock options repurchased (20,821) (20,821)
Net loss (income) 868,084 868,084
Ending balance, value at Sep. 30, 2020 $ 778 13,887,975 (3,836,841) 10,051,912
Ending balance, shares at Sep. 30, 2020 7,767,530        
Beginning balance, value at Dec. 31, 2020 $ 778 13,893,660 (2,235,852) 11,658,586
Beginning balance, shares at Dec. 31, 2020 7,775,030        
Stock options exercised 11,320 11,320
Stock options exercised, shares   7,500        
Stock issued for cash in offering, net $ 300 16,794,700 16,795,000
Stock issued for cash in offering, net, shares   3,000,000        
Stock issued for services $ 3 171,213 171,216
Stock issued for services, shares   24,600        
Net loss (income) 2,527,494 2,527,494
Ending balance, value at Sep. 30, 2021 $ 1,081 30,870,893 291,642 31,163,616
Ending balance, shares at Sep. 30, 2021 10,807,130        
Beginning balance, value at Jun. 30, 2021 $ 1,078 30,694,430 (1,051,330) 29,644,178
Beginning balance, shares at Jun. 30, 2021 10,780,030        
Stock options exercised 5,250 5,250
Stock options exercised, shares   2,500        
Stock issued for services $ 3 171,213 171,216
Stock issued for services, shares   24,600        
Net loss (income) 1,342,972 1,342,972
Ending balance, value at Sep. 30, 2021 $ 1,081 $ 30,870,893 $ 291,642 $ 31,163,616
Ending balance, shares at Sep. 30, 2021 10,807,130