Significant Accounting Policies and Use of Estimates [Tables]

6 Months Ended

Jun. 30, 2012

Significant Accounting Policies and Use of Estimates [Abstract]

Estimation of fair value of the warrant liability

	June 30, 2012			December 31, 2011
Risk-free interest rate		0.7	%		0.8	%
Remaining term (years)		4.0			4.5
Expected dividends		0.0	%		0.0	%
Volatility		100.0	%		100.0	%

Changes in the fair value of company's financial liabilities

Balance at December 31, 2011	$	4,155
Net decrease in fair value of warrant liability on remeasurement		(1,248	)
Balance at June 30, 2012	$	2,907