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Consolidated Statements of Changes in Stockholders' Equity - USD ($)
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2014 6,162,027      
Balance at Dec. 31, 2014 $ 61,620 $ 22,144,805 $ 7,062,450 $ 29,268,875
Exercise of stock options (in shares)     0
Exercise of stock options
Stock-based compensation (in shares) 36,108      
Stock-based compensation $ 361 750,397 750,758
Net (loss)/income 3,204,996 $ 3,204,996
Balance (in shares) at Dec. 31, 2015 6,198,135     6,198,135
Balance at Dec. 31, 2015 $ 61,981 22,895,202 10,267,446 $ 33,224,629
Exercise of stock options (in shares) 100     100,000
Exercise of stock options $ 1,000 461,000 $ 462,000
Stock-based compensation (in shares) 48,455      
Stock-based compensation $ 485 775,272 775,757
Net (loss)/income (149,124) $ (149,124)
Balance (in shares) at Dec. 31, 2016 6,346,590     6,346,590
Balance at Dec. 31, 2016 $ 63,466 $ 24,131,474 $ 10,118,332 $ 34,313,262