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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, 2020 $ 778 $ 13,893,660 $ (2,235,852) $ 11,658,586
Beginning balance, shares at Dec. 31, 2020 7,775,030        
Stock options exercised 6,070 6,070
Stock options exercised, shares   5,000        
Net income (loss) 1,184,522 1,184,522
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        
Ending balance, value at Jun. 30, 2021 $ 1,078 30,694,430 (1,051,330) 29,644,178
Ending balance, shares at Jun. 30, 2021 10,780,030        
Beginning balance, value at Mar. 31, 2021 $ 778 13,897,280 (1,580,689) 12,317,369
Beginning balance, shares at Mar. 31, 2021 7,777,530        
Stock options exercised 2,450 2,450
Stock options exercised, shares   2,500        
Net income (loss) 529,359 529,359
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        
Ending balance, value at Jun. 30, 2021 $ 1,078 30,694,430 (1,051,330) 29,644,178
Ending balance, shares at Jun. 30, 2021 10,780,030        
Beginning balance, value at Dec. 31, 2021 $ 1,081 30,923,391 304,237 31,228,709
Beginning balance, shares at Dec. 31, 2021 10,807,130        
Stock options exercised 12,725 12,725
Stock options exercised, shares   5,000        
Stock issued for services $ 6 349,995 350,001
Stock issued for services, shares   64,815        
Stock reserved for future services 70,497 70,497
Net income (loss) 1,364,448 1,364,448
Ending balance, value at Jun. 30, 2022 $ 1,087 31,356,608 1,668,685 33,026,380
Ending balance, shares at Jun. 30, 2022 10,876,945        
Beginning balance, value at Mar. 31, 2022 $ 1,081 30,957,616 881,311 31,840,008
Beginning balance, shares at Mar. 31, 2022 10,809,630        
Stock options exercised 4,750 4,750
Stock options exercised, shares   2,500        
Stock issued for services $ 6 349,995 350,001
Stock issued for services, shares   64,815        
Stock reserved for future services 44,247 44,247
Net income (loss) 787,374 787,374
Ending balance, value at Jun. 30, 2022 $ 1,087 $ 31,356,608 $ 1,668,685 $ 33,026,380
Ending balance, shares at Jun. 30, 2022 10,876,945