Stockholders' Equity (Details 10) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Class Of Warrant Or Right Number Of Warrants Or Rights Roll Forward
Number of Warrants Outstanding at beginning of period	77,155	151,722
Number of warrants issued	153,767	51,110
Number Of Warrants Or Rights Exercised		(12,411)
Number Of Warrants Or Rights Expired	(17,401)	(113,266)
Number of Warrants Outstanding at end of period	213,521	77,155
Number of Warrants Or Rights Exercisable at end of period	213,521	77,155	151,722
Excercise Price of Warrants Outstanding at beginning of period	$ 0.0289	$ 0.0269
Exercise Price Of Warrants Issued	$ 0.0275	$ 0.0283
Exercise Price Of Warrants Exercised		$ 0.0225
Exercise Price Of Warrants Expired	$ 0.0225	$ 0.0230
Excercise Price of Warrants Outstanding at end of period	$ 0.0284	$ 0.0289
Exercise Price Of WarrantsExercisable at end of period	$ 0.0284	$ 0.0289	$ 0.0269