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Net Income Per Share Applicable to Common Stockholders (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Numerator:        
Net income $ 516,938 $ 401,067 $ 1,065,252 $ 329,507
Denominator: Weighted average common shares outstanding used in computing net income per share:        
Basic 5,821,891 5,545,270 5,733,267 5,529,429
Effect of dilutive stock options and warrants (treasury stock method) 1,445,891 365,983 1,191,751 431,252
Diluted 7,267,169 5,911,253 6,925,018 5,960,681
Net income per share:        
Basic $ 0.09 $ 0.07 $ 0.19 $ 0.06
Diluted $ 0.07 $ 0.07 $ 0.15 $ 0.06