Subsequent Events (Details) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended				9 Months Ended		32 Months Ended
	Oct. 31, 2012	May 31, 2012	Dec. 31, 2011	Jul. 31, 2008	Sep. 30, 2012	Sep. 30, 2011	Nov. 07, 2012
Subsequent Events [Abstract]
Common stock sold	12,385,321	10,000,000	700,000	6,686,650	8,400,000		24,957,715
Price per share	$ 2.18	$ 1.22
Amount raised through the sale of common stock	$ 26,900				$ 26,925	$ 9,182