Business, Liquidity and Summary of Significant Accounting Policies (Details 1) (Fair Value Liability For Price Adjustable Warrants, Level 3, USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 4,169
Change in fair value included in statement of operations	(1,981)
Ending balance	2,530
Exercise Price [Roll Forward]
Beginning balance	$ 0.28
Ending balance	$ 0.28
Stock Price [Roll Forward]
Beginning balance	$ 0.46
Ending balance	$ 0.27
Volatility [Roll Forward]
Beginning balance	146.00%
Ending balance	128.00%
Contractual Life In Years [Roll Forward]
Contractual Life (In Years)	4 years 7 months 21 days
Fair Value Of Warrant Exercised Term	4 years 4 months 28 days
Risk Free [Roll Forward]
Beginning balance	0.66%
Ending balance	1.19%
Fair Value of warrants issued in Amendment 5
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value of warrants issued in Notes and Warrants Purchase Agreement	$ 342
Exercise Price [Roll Forward]
Fair value of warrants issued in Notes and Warrants Purchase Agreement, exercise price	$ 0.28
Stock Price [Roll Forward]
Fair value of warrants issued in Notes and Warrants Purchase Agreement, stock price	$ 0.37
Volatility [Roll Forward]
Fair value of warrants issued in Notes and Warrants Purchase Agreement, volatility	142.00%
Contractual Life In Years [Roll Forward]
Fair value of warrants issued, term	5 years 6 months
Risk Free [Roll Forward]
Fair value of warrants issued in Notes and Warrants Purchase Agreement, risk free rate	1.09%