Stockholders' Equity

3 Months Ended

Mar. 31, 2012

Stockholders' Equity Note [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

8. Stockholders’ Equity

During the three months ended March 31, 2012, the Company issued 289,343 shares of common stock, in connection with the exercise of stock options, for proceeds of approximately $68,000. The Company also issued 1,194,264 shares of common stock in connection with the exercise of warrants, for proceeds of approximately $1.5 million.