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Statements of Stockholders' Equity (Unaudited Condensed) - USD ($)
Common Stock
Additional paid-in capital
Retained Earnings (Accumulated Deficit)
Treasury Stock
Accumulated Other Comprehensive (Loss) Income
Total
Balance at Dec. 31, 2017 $ 566,265 $ 22,458,219 $ 978,973 $ (407,879) $ (638) $ 23,594,940
Balance, Shares at Dec. 31, 2017 5,662,645     186,448    
Other comprehensive income (loss), net of taxes 74,431 74,431
Exercise of stock options (3,162) $ 18,662 15,500
Exercise of stock options, Shares     (8,531)    
Stock-based compensation 257,696 257,696
Net loss (1,269,442) (1,269,442)
Balance at Sep. 30, 2018 $ 566,265 22,712,753 (290,469) $ (389,217) 73,793 22,673,125
Balance, Shares at Sep. 30, 2018 5,662,645     177,917    
Balance at Jun. 30, 2018 $ 566,265 22,620,595 (40,512) $ (391,405) 59,462 22,814,405
Balance, Shares at Jun. 30, 2018 5,662,645     178,917    
Other comprehensive income (loss), net of taxes 14,331 14,331
Exercise of stock options 2,452 $ 2,188 4,640
Exercise of stock options, Shares     (1,000)    
Stock-based compensation 89,706 89,706
Net loss (249,957) (249,956)
Balance at Sep. 30, 2018 $ 566,265 22,712,753 (290,469) $ (389,217) 73,793 22,673,125
Balance, Shares at Sep. 30, 2018 5,662,645     177,917    
Balance at Dec. 31, 2018 $ 566,265 22,695,557 (1,342,698) $ (204,947) 30,157 21,744,334
Balance, Shares at Dec. 31, 2018 5,662,645     93,683    
Other comprehensive income (loss), net of taxes (95,387) (95,387)
Public offering of common stock, net of $696,566 of offering costs $ 163,636 8,139,800 8,303,436
Public offering of common stock, net of $696,566 of offering costs, Shares 1,636,364          
Exercise of stock options (9,337) $ 9,339 2
Exercise of stock options, Shares       (4,269)    
Stock-based compensation 221,569 221,569
Net loss (985,135) (985,136)
Balance at Sep. 30, 2019 $ 729,901 31,047,589 (2,327,833) $ (195,608) (65,230) 29,188,819
Balance, Shares at Sep. 30, 2019 7,299,009     89,414    
Balance at Jun. 30, 2019 $ 729,901 30,978,936 (1,825,298) $ (195,608) (42,912) 29,645,019
Balance, Shares at Jun. 30, 2019 7,299,009     89,414    
Other comprehensive income (loss), net of taxes (22,318) (22,318)
Stock-based compensation 68,653 68,653
Net loss (502,535) (502,535)
Balance at Sep. 30, 2019 $ 729,901 $ 31,047,589 $ (2,327,833) $ (195,608) $ (65,230) $ 29,188,819
Balance, Shares at Sep. 30, 2019 7,299,009     89,414