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FAIR VALUE MEASUREMENTS (Details 3) (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Derivatives    
Exercise Price (in dollars per share) $ 3.04 $ 4.05
Number of Shares 15,576,216 17,811,506
Fair Value $ 367 $ 51
Dividend yield (as a percent) 0.00% 0.00%
Expected volatility (as a percent) 84.40% 82.80%
Risk-free interest rate (as a percent) 0.13% 0.25%
Expected term 1 year 2 years
Non-employee options
    
Derivatives    
Amount of reclassifications from current liabilities to stockholders' equity 0 0
Exercise Price (in dollars per share) $ 6.39  
Number of Shares 284,600 284,600
Fair Value $ 367 $ 51