Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Tables)

v2.4.0.8
Stockholders' Equity (Tables)
12 Months Ended
Dec. 31, 2013
Financial Liabilities Subject to Fair Value Measurements

The following table sets forth the Company’s financial liabilities, related to warrants issued in the August 2008, October 2009 and March 2011 offerings, subject to fair value measurements as of December 31, 2013 and 2012:

 

(in thousands)

   Fair Value as of
December 31,
2013
     Basis of Fair Value Measurements  
      Level 1      Level 2      Level 3  

October 2009 warrants

   $ 11,320      $ —        $ —        $ 11,320   

March 2011 warrants

     12,101        —          —          12,101   
  

 

 

    

 

 

    

 

 

    

 

 

 

Total common stock warrants

   $ 23,421      $ —        $ —        $ 23,421   
  

 

 

    

 

 

    

 

 

    

 

 

 

 

(in thousands)

   Fair Value as of
December 31,
2012
     Basis of Fair Value Measurements  
      Level 1      Level 2      Level 3  

August 2008 warrants

   $ 8,014      $ —        $ —        $ 8,014  

October 2009 warrants

     11,963        —          —          11,963  

March 2011 warrants

     12,581        —          —          12,581  
  

 

 

    

 

 

    

 

 

    

 

 

 

Total common stock warrants

   $ 32,558      $ —        $ —        $ 32,558  
  

 

 

    

 

 

    

 

 

    

 

 

 
Reconciliation of Warrant Liability Measured at Fair Value

The following table is a reconciliation of the warrant liability measured at fair value using level 3 inputs (in thousands):

 

     Warrant Liability  

Balance at December 31, 2011

   $ 9,209  

Exercise of common stock warrants during 2012

     (27,867 )

Change in fair value of common stock warrants during 2012

     51,216  
  

 

 

 

Balance at December 31, 2012

   $ 32,558  
August 2008 Offering [Member]
 
Outstanding Warrants Valuation Assumption

The fair value of these warrants on December 31, 2013 and 2012 was determined using a Black Scholes valuation model with the following Level 3 inputs:

 

     December 31,
2013
     December 31,
2012
 

Risk-free interest rate

     —          0.16 %

Expected life (in years)

     —          0.66  

Dividend yield

     —          —    

Volatility

     —          118 %

Stock price

     —        $ 4.21  
October 2009 Offering [Member]
 
Outstanding Warrants Valuation Assumption

The fair value of these warrants on December 31, 2013 and 2012 was determined using a Black Scholes valuation model with the following Level 3 inputs:

 

     December 31,
2013
    December 31,
2012
 

Risk-free interest rate

     0.13 %     0.25 %

Expected life (in years)

     0.76       1.76  

Dividend yield

     —         —    

Volatility

     49 %     98 %

Stock price

   $ 4.67     $ 4.21  
March 2011 Offering [Member]
 
Outstanding Warrants Valuation Assumption

The fair value of these warrants on December 31, 2013 and 2012 was determined using a Black Scholes valuation model with the following Level 3 inputs:

 

     December 31,
2013
    December 31,
2012
 

Risk-free interest rate

     0.78 %     0.72 %

Expected life (in years)

     2.21       3.21  

Dividend yield

     —         —    

Volatility

     88 %     94 %

Stock price

   $ 4.67     $ 4.21