Stockholders' Equity

3 Months Ended

Mar. 31, 2015

Stockholders' Equity [Abstract]

Stockholders Equity Note Disclosure [Text Block]

10. Stockholders’ Equity

Preferred Stock

There were no issuances of preferred stock during the three month periods ended March 31, 2015 and 2014.

Common Stock

The Company is authorized to issue 110,000,000 shares of common stock, $.001 par value per share. As of March 31, 2015, there were 81,873,923 shares of common stock outstanding.

Employee Stock Option Exercises

Shares of common stock issued as a result of stock option exercises during the three month period ended March 31, 2015 were 217,160 and the Company realized gross proceeds of approximately $126,100 from the exercise of such stock options. See Note 11 for additional information regarding stock option plans.