Derivative Liability (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended			2 Months Ended			2 Months Ended		1 Months Ended			1 Months Ended				1 Months Ended				1 Months Ended				1 Months Ended		1 Months Ended			9 Months Ended
	Mar. 31, 2011	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011	Mar. 31, 2012 Series B Preferred Stock [Member]	Dec. 31, 2010 Series B Preferred Stock [Member]	Aug. 05, 2010 Series B Preferred Stock [Member]	Mar. 31, 2012 Series C Preferred Stock [Member]	Dec. 31, 2010 Series C Preferred Stock [Member]	Sep. 30, 2011 September 2011 Note And Warrant Purchase Agreement [Member]	Sep. 30, 2012 September 2011 Note And Warrant Purchase Agreement [Member]	Sep. 20, 2011 September 2011 Note And Warrant Purchase Agreement [Member]	Feb. 29, 2012 December 2011 Note And Warrant Purchase Agreement [Member]	Dec. 31, 2011 December 2011 Note And Warrant Purchase Agreement [Member]	Sep. 30, 2012 December 2011 Note And Warrant Purchase Agreement [Member]	Dec. 20, 2011 December 2011 Note And Warrant Purchase Agreement [Member]	Feb. 29, 2012 December 2011 Note And Warrant Purchase Agreement [Member] Common stock [Member]	Apr. 30, 2012 April Two Thousand Twelve Note And Warrant Purchase Agreement [Member]	Sep. 30, 2012 April Two Thousand Twelve Note And Warrant Purchase Agreement [Member]	Apr. 23, 2012 April Two Thousand Twelve Note And Warrant Purchase Agreement [Member]	Aug. 31, 2010 August Two Thousand Ten Series B Financing [Member]	Dec. 31, 2010 December Two Thousand Ten Series C Financing [Member]	Mar. 31, 2011 March Two Thousand Eleven Series C Financing [Member]	Sep. 30, 2012 March Two Thousand Eleven Series C Financing [Member]	Aug. 31, 2011 Warrants Issued To Consultants [Member]	Sep. 30, 2012 Warrants Issued To Consultants [Member]	Apr. 30, 2012 Warrants Issued To Consultants [Member] April Two Thousand Twelve Note And Warrant Purchase Agreement [Member]	Sep. 30, 2012 Warrants Issued To Consultants [Member] April Two Thousand Twelve Note And Warrant Purchase Agreement [Member]	Apr. 23, 2012 Warrants Issued To Consultants [Member] April Two Thousand Twelve Note And Warrant Purchase Agreement [Member]	Sep. 30, 2012 Series B Financing [Member]	Sep. 30, 2012 Series C Financing [Member]
Derivative Liability, Fair Value, Net [Abstract]
Loss resulting from revaluation of conversion features on preferred stock	$ 47
Decrease in the derivative liability, resulted from the reclassification of derivative value to equity	362
Subsidiary, Sale of Stock [Line Items]
Number of shares sold in private placement																					1,440	2,211	800							8,380	2,211
Number of common shares callable by warrants												5,556				5,556				5,000,000			1,778
Number of warrants outstanding															556					5,349					1,000				349
Fair value of warrants outstanding, initial												7				13				47					1				2
Fair value of warrants outstanding											12				1				45							2		3
Risk-free interest rate		1.65%								42.00%				39.00%				40.00%							7.00%		40.00%
Expected term										3 years				3 years				3 years							3 years		3 years
Volatility		203.60%								204.00%				202.00%				213.00%							190.00%		213.00%
Fair value assumptions for warrants pricing, expected dividend										0.00%				0.00%				0.00%							0.00%		0.00%
Exercise period of warrants					3 years			3 years		3 years				3 years				3 years							3 years		3 years
Warrants, expiration date										Aug. 11, 2014				Aug. 11, 2012											Aug. 11, 2014
Number of shares issued by warrants excercise													5,000				4,043
Number of shares issued by warrants excercise, cashless					3,696			23,929					4,889
Number of shares issued by warrants excercise, for cash													111
Proceeds from issuance of common stock, related to warrants exercise					73			140									2
Fair value of the derivative liability		$ 182	$ 18	$ 281		$ 130	$ 2,000		$ 179														$ 4	$ 4