Quarterly report pursuant to Section 13 or 15(d)

Convertible Notes and Warrant Liabilities (Details 3)

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Convertible Notes and Warrant Liabilities (Details 3) (USD $)
1 Months Ended 3 Months Ended 4 Months Ended 6 Months Ended 12 Months Ended
Feb. 22, 2011
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2010
Dec. 31, 2011
Convertible Notes and Warrant Liabilities                
Loss charged to other income (expense)   $ 354,000 $ (2,000)   $ 3,461,000 $ 2,216,000    
Interest expense amortized   66,000     132,000      
Changes in the Convertible Notes and Investor Warrants                
Allocation of initial proceeds 4,000,000              
Amortization of debt discount       91,000 132,000 91,000    
Fair value adjustment 585,000     2,735,000 5,861,000      
Total Liabilities 4,585,000 12,920,000 7,411,000 7,411,000 12,920,000 7,411,000   6,927,000
Financing costs                
Financing costs associated with convertible notes           530,000    
Financing costs recorded in prepaid expenses and other current assets             135,000  
Investor Warrants
               
Convertible Notes and Warrant Liabilities                
Derivative liability 908,000 4,000,000     4,000,000      
Loss charged to other income (expense)   0     2,400,000      
Changes in the Convertible Notes and Investor Warrants                
Allocation of initial proceeds 792,000              
Fair value adjustment 116,000     988,000 2,400,000      
Balance 908,000 4,000,000 1,896,000 1,896,000 4,000,000 1,896,000   1,600,000
Convertible Notes
               
Convertible Notes and Warrant Liabilities                
Initial carrying value 3,208,000              
Derivative liability 3,680,000 8,920,000     8,920,000      
Loss charged to other income (expense)   354,000     3,461,000      
Debt discount to be amortized 792,000              
Changes in the Convertible Notes and Investor Warrants                
Allocation of initial proceeds 3,208,000              
Amortization of debt discount       91,000 132,000      
Fair value adjustment 469,000     1,747,000 3,461,000      
Total Liabilities $ 3,677,000 $ 8,920,000 $ 5,515,000 $ 5,515,000 $ 8,920,000 $ 5,515,000   $ 5,327,000