Stockholders' Equity

9 Months Ended

Sep. 30, 2012

Stockholders' Equity Note [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

8.   Stockholders’ Equity

During the nine months ended September 30, 2012, the Company issued 334,851 shares of common stock, in connection with the exercise of stock options, for proceeds of approximately $94,000. The Company also issued 1,768,167 shares of common stock in connection with the exercise of warrants, for proceeds of approximately $2.0 million.