FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 5) (Fair value measured on a recurring basis, Significant Unobservable Inputs (Level 3), USD $) In Thousands, except Per Share data, unless otherwise specified				12 Months Ended		12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Future purchase commitment	Dec. 31, 2012 Future purchase commitment Present value of expected payments	Dec. 31, 2012 Equity derivative contracts	Dec. 31, 2012 Equity derivative contracts Black-Scholes-Merton Model	Dec. 31, 2012 Convertible note receivable, available-for-sale Black-Scholes-Merton Model	Dec. 31, 2012 Convertible note receivable, available-for-sale Discounted cash flow
Fair value, Unobservable Input
Fair Value, Assets	$ 28	$ 7,299			$ 28
Fair Value, Liabilities	$ 3,727	$ 13,681	$ 3,209
Unobservable Input(s)
Expected volatility (as a percent)						55.00%	45.00%
Estimated share price (in dollars per share)						$ 0.01
Estimated credit spread (as a percent)								19.00%
Discount rate (as a percent)				15.50%