FAIR VALUE MEASUREMENTS (Details 3) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Fair Value Measurement
Exercise Price (in dollars per share)	$ 4.05	$ 5.51
Number of Shares	17,811,506	14,355,548
Fair Value	$ 51	$ 64
Dividend yield (as a percent)	0.00%	0.00%
Expected volatility (as a percent)	82.80%	71.40%
Risk-free interest rate (as a percent)	0.25%	0.36%
Expected term	2 years	3 years
Non-employee options
Fair Value Measurement
Exercise Price (in dollars per share)	$ 6.39
Number of Shares	284,600	284,600
Fair Value	$ 51	$ 64