Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measures (Details 2)

v2.4.0.8
Fair Value Measures (Details 2) (USD $)
0 Months Ended 1 Months Ended 4 Months Ended 6 Months Ended 1 Months Ended 4 Months Ended 6 Months Ended 1 Months Ended 4 Months Ended 0 Months Ended 1 Months Ended 4 Months Ended 1 Months Ended 4 Months Ended 0 Months Ended 1 Months Ended 3 Months Ended 4 Months Ended 6 Months Ended 0 Months Ended 1 Months Ended 4 Months Ended 0 Months Ended 1 Months Ended 4 Months Ended
Jan. 16, 2013
Feb. 22, 2013
Jun. 30, 2013
Jun. 30, 2013
Jun. 30, 2012
Feb. 22, 2013
2011 Warrant Liabilities
Jun. 30, 2013
2011 Warrant Liabilities
Jun. 30, 2012
2011 Warrant Liabilities
Dec. 31, 2012
2011 Warrant Liabilities
Feb. 22, 2013
2012 Warrant Liabilities
Jun. 30, 2013
2012 Warrant Liabilities
Dec. 31, 2012
2012 Warrant Liabilities
Jan. 16, 2013
Third Tranche Warrant Liabilities
Feb. 22, 2013
Third Tranche Warrant Liabilities
Feb. 22, 2013
2013 Warrants
Jun. 30, 2013
2013 Warrants
Feb. 22, 2013
2013 SPA Option
Jun. 30, 2013
2013 SPA Option
Feb. 22, 2013
2011 Convertible Notes
Feb. 22, 2011
2011 Convertible Notes
Feb. 22, 2013
2011 Convertible Notes
Jun. 30, 2013
2011 Convertible Notes
Jun. 30, 2012
2011 Convertible Notes
Jun. 30, 2013
2011 Convertible Notes
Jun. 30, 2013
2011 Convertible Notes
Jun. 30, 2012
2011 Convertible Notes
Feb. 22, 2013
2012 Convertible Notes
Jul. 02, 2012
2012 Convertible Notes
Feb. 22, 2013
2012 Convertible Notes
Jun. 30, 2013
2012 Convertible Notes
Dec. 31, 2012
2012 Convertible Notes
Feb. 22, 2013
Third Tranche Convertible Notes
Jan. 16, 2013
Third Tranche Convertible Notes
Jan. 16, 2013
Third Tranche Convertible Notes
Feb. 22, 2013
Third Tranche Convertible Notes
Jun. 30, 2013
Third Tranche Convertible Notes
Changes in the Convertible Notes and Investor Warrants                                                                        
Fair value of liabilities at the beginning of the period $ 11,898,000 $ 12,592,000 $ 17,490,000 $ 11,898,000 $ 6,927,000 $ 2,000,000 $ 3,916,000 $ 1,600,000 $ 2,000,000 $ 1,800,000 $ 1,632,000 $ 1,800,000   $ 300,000   $ 2,759,000   $ 1,211,000     $ 6,510,000     $ 6,070,000 $ 6,510,000 $ 5,327,000     $ 1,588,000 $ 1,516,000 $ 1,588,000       $ 394,000 $ 386,000
Amortization of debt discount   95,000   95,000 132,000                           38,000   38,000   66,000     132,000 55,000   55,000     2,000     2,000  
Allocation of initial proceeds 250,000                       108,000             3,208,000               417,000         142,000 142,000    
Exercise of warrants     (1,731,000)       (1,731,000)                                                          
Conversion of debentures     (450,000) (450,000)                                   (450,000)   (450,000) (450,000)                      
Initial fair value adjustment/Fair value adjustment 444,000 (450,000) (4,245,000)   5,861,000   (376,000) 2,400,000     (653,000)   192,000     (742,000)   (807,000)     (370,000)     (1,240,000)   3,461,000     (72,000) (336,000)       252,000 (8,000) (91,000)
Carrying value of old debt at modification   (8,137,000)                                     (6,178,000)               (1,571,000)           (388,000)  
Fair value of new debt at modification   7,972,000                                     6,070,000               1,516,000           386,000  
Modification of warrants   2,548,000       1,916,000       632,000                                                    
Cancellation/retirement of warrants   (1,100,000)               (800,000)       (300,000)                                            
Fair value of instruments at issuance   3,970,000                         2,759,000   1,211,000                                      
Fair value of liabilities at the end of the period $ 12,592,000 $ 17,490,000 $ 11,064,000 $ 11,064,000 $ 12,920,000 $ 3,916,000 $ 1,809,000 $ 4,000,000 $ 2,000,000 $ 1,632,000 $ 979,000 $ 1,800,000 $ 300,000   $ 2,759,000 $ 2,017,000 $ 1,211,000 $ 404,000 $ 6,070,000   $ 6,070,000 $ 4,380,000 $ 8,920,000 $ 4,380,000 $ 4,380,000 $ 8,920,000 $ 1,516,000   $ 1,516,000 $ 1,180,000 $ 1,588,000 $ 386,000 $ 394,000 $ 394,000 $ 386,000 $ 295,000