Stockholders' Equity

6 Months Ended

Jun. 30, 2016

Stockholders' Equity [Abstract]

Stockholders Equity Note Disclosure [Text Block]

10. Stockholders’ Equity

Preferred Stock

There were no issuances of preferred stock during the three and six month periods ended June 30, 2016 and 2015.

Common Stock

The Company is authorized to issue 110,000,000 shares of common stock, $.001 par value per share. As of June 30, 2016, there were 82,730,134 shares of common stock outstanding.

Employee Stock Option Exercises

The Company issued 209,438 shares of common stock issued as a result of vesting of Restricted Stock Awards (RSA) during the six month period ended June 30, 2016. See Note 11 for additional information regarding RSA activity. There was no vesting of RSAs during the six month period ended June 30, 2015.

Shares of common stock issued as a result of stock option exercises and realized gross proceeds during the six month period ended June 30, 2015 were 825,029 and $670,500, respectively, from the exercise of such stock options. See Note 11 for additional information regarding the stock incentive plans.