Subsequent Events

12 Months Ended

Dec. 31, 2013

Subsequent Events [Abstract]

Subsequent Events [Text Block]

16. Subsequent Event

During the first quarter of 2014, we established a $150 million shelf registration statement (inclusive of approximately $31.7 million of availability under a superseded registration) which we used for our recent underwritten public offering of 8.75 million shares of common stock at a public offering price of $4.60 per share, resulting in net proceeds of approximately $37.5 million.