Quarterly report pursuant to sections 13 or 15(d)

8. FAIR VALUE MEASUREMENTS (Details 3)

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8. FAIR VALUE MEASUREMENTS (Details 3) (Level 3 [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Warrants [Member]
 
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Beginning Balance $ 4,892
Warrant exercises (260)
Adjustments to fair value for the period (93)
Ending Balance 8,079
Warrants [Member] | Issuance In January [Member]
 
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Issuance of warrants 2,657
Warrants [Member] | Issuance In March [Member]
 
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Issuance of warrants 883
Conversion Feature [Member]
 
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Beginning Balance   
Warrant exercises   
Adjustments to fair value for the period   
Ending Balance 1,401
Conversion Feature [Member] | Issuance In January [Member]
 
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Issuance of warrants   
Conversion Feature [Member] | Issuance In March [Member]
 
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Issuance of warrants $ 1,401