FAIR VALUE DISCLOSURES - RECONCILIATION OF THE CHANGES IN LEVEL 3 FAIR VALUE MEASUREMENTS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013
Warrants | Warrants
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at the Beginning of the Quarter	$ 12,088		$ 10,570		$ 4,857
Total losses included in net loss	5,467		1,518		5,713
Write off of derivative liabilities	0	[1]	0	[2]	0	[3]
Balance at the End of the Quarter	17,555		12,088		10,570
Convertible Debt Securities | Derivative – Convertible Notes embedded derivative
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at the Beginning of the Quarter	3,650		3,265		17,173
Total losses included in net loss	0		398		12,733
Write off of derivative liabilities	(3,650)	[1]	(13)	[2]	(26,641)	[3]
Balance at the End of the Quarter	0		3,650		3,265
Contingent Consideration
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at the Beginning of the Quarter	7,000		7,000		7,000
Total losses included in net loss	0		0		0
Write off of derivative liabilities	0	[1]	0	[2]	0	[3]
Balance at the End of the Quarter	$ 7,000		$ 7,000		$ 7,000

[1] Represents the pro rata portion of derivative liability associated with tendered Convertible Notes measured at the date of tender or remaining at the Conversion Termination Date, which is included in the three and nine months ended September 30, 2013 (loss) gain on extinguishment of debt on the accompanying condensed consolidated statements of operations.

[2] Represents the pro rata portion of derivative liability associated with tendered Convertible Notes measured at the date of tender, which is included in the nine months ended September 30, 2013 (loss) gain on extinguishment of debt on the accompanying condensed consolidated statements of operations.

[3] Represents the pro rata portion of derivative liability associated with tendered Convertible Notes measured at the date of exchange, which is included in the nine months ended September 30, 2013 (loss) gain on extinguishment of debt on the accompanying condensed consolidated statements of operations.