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Consolidated Statements of Stockholders' Equity - USD ($)
Common Stock
Additional Paid-In Capital
Accumulated Other Comprehensive Loss
Retained Earnings
Total
Beginning Balance, Shares at Dec. 31, 2014 2,316,743        
Beginning Balance, Amount at Dec. 31, 2014 $ 2,317 $ 5,725,470 $ (47,283) $ 327,258 $ 6,007,762
Stock-based compensation expense, shares 8,000        
Stock-based compensation expense, amount $ 8 744,587     744,595
Exercise of stock options, net of tax, shares 42,589        
Exercise of stock options, net of tax, amount $ 42 66,293     66,335
Shares issued upon partial conversion of note payable (see Note 6), Shares 417,712        
Shares issued upon partial conversion of note payable (see Note 6), Amount $ 418 1,666,255     1,666,673
Dividends       (83,101) (83,101)
Foreign currency translation     12,129   12,129
Net income       144,584 144,584
Ending Balance, Shares at Dec. 31, 2015 2,785,044        
Ending Balance, Amount at Dec. 31, 2015 $ 2,785 8,202,605 (35,154) 388,741 8,558,977
Stock-based compensation expense, amount   882,087     882,087
Exercise of stock options, net of tax, shares 75,900        
Exercise of stock options, net of tax, amount $ 76 34,918     34,994
Shares issued upon partial conversion of note payable (see Note 6), Amount         0
Dividends       (452,724) (452,724)
Foreign currency translation     (644)   (644)
Net income       1,555,208 1,555,208
Ending Balance, Shares at Dec. 31, 2016 2,860,944        
Ending Balance, Amount at Dec. 31, 2016 $ 2,861 $ 9,119,610 $ (35,798) $ 1,491,225 $ 10,577,898