Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measures (Details)

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Fair Value Measures (Details) (USD $)
Jun. 30, 2013
Feb. 22, 2013
Jan. 16, 2013
Dec. 31, 2012
Jun. 30, 2012
Dec. 31, 2011
Assets and liabilities measured at fair value            
Convertible Notes $ 5,855,000     $ 8,098,000    
Total Liabilities 11,064,000 17,490,000 12,592,000 11,898,000 12,920,000 6,927,000
Balance
           
Assets and liabilities measured at fair value            
Convertible Notes 5,855,000     8,098,000    
Warrant liabilities 5,209,000     3,800,000    
Total Liabilities 11,064,000     11,898,000    
Significant Unobservable Inputs (Level 3)
           
Assets and liabilities measured at fair value            
Convertible Notes 5,855,000     8,098,000    
Warrant liabilities 5,209,000     3,800,000    
Total Liabilities $ 11,064,000     $ 11,898,000