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Statements of Stockholders' Equity - USD ($)
Total
Common Stock
Additional paid-in capital
Retained Earnings (Accumulated Deficit)
Treasury Stock
Accumulated Other Comprehensive (Loss) Income
Balance at Dec. 31, 2016 $ 19,722,142 $ 504,484 $ 18,526,383 $ 1,147,120 $ (431,943) $ (23,902)
Balance, Shares at Dec. 31, 2016   5,044,838     197,448  
Net loss (168,147) (168,147)
Other comprehensive income, net of taxes 23,264   23,264
Private placement of common stock, net of $15,836 of offering costs 1,034,164 $ 20,000 1,014,164
Private placement of common stock, net of $15,836 of offering costs, Shares   200,000        
Public offering of common stock, net of $315,818 of offering costs 2,734,174 $ 41,781 2,692,393
Public offering of common stock, net of $315,818 of offering costs, Shares   417,807        
Exercise of stock options 49,560 25,496 $ 24,064
Exercise of stock options, Shares       (11,000)  
Stock-based compensation 199,783 199,783
Balance at Dec. 31, 2017 23,594,940 $ 566,265 22,458,219 978,973 $ (407,879) (638)
Balance, Shares at Dec. 31, 2017   5,662,645     186,448  
Net loss (2,321,671) (2,321,671)
Other comprehensive income, net of taxes 30,795 30,795
Exercise of stock options 96,254 (106,678) $ 202,932
Exercise of stock options, Shares       (92,765)  
Stock-based compensation 344,016 344,016
Balance at Dec. 31, 2018 $ 21,744,334 $ 566,265 $ 22,695,557 $ (1,342,698) $ (204,947) $ 30,157
Balance, Shares at Dec. 31, 2018   5,662,645     93,683