Stockholders' Equity (Details 5) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Class Of Warrant Or Right Number Of Warrants Or Rights Roll Forward
Number of Warrants Outstanding at beginning of period	182,644	135,131
Number Of Warrants Or Rights Issued	8,643	59,735
Number Of Warrants Or Rights Exercised	(35,162)	(12,222)
Number Of Warrants Or Rights Expired	(4,403)	0
Number of Warrants Outstanding at end of period	151,722	182,644
Number of Warrants Or Rights Exercisable at end of period	151,722	182,644	135,131
Excercise Price of Warrants Outstanding at beginning of period	$ 0.0261	$ 0.0274
Exercise Price Of Warrants Issued	$ 0.0500	$ 0.0064
Exercise Price Of Warrants Exercised	$ 0.0264	$ 0.0011
Exercise Price Of Warrants Expired	$ 0.0269	$ 0
Excercise Price of Warrants Outstanding at end of period	$ 0.0269	$ 0.0261
Exercise Price Of WarrantsExercisable at end of period	$ 0.0269	$ 0.0261	$ 0.0274