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Fair Value of Financial Instruments (Tables)
6 Months Ended
Jun. 30, 2012
Fair Value of Financial Instruments [Abstract]  
Fair value of assets and liabilities on a recurring basis

Fair value measurements on a recurring basis

June 30, 2012

 

 

                         
    Level 1     Level 2     Level 3  

Convertible securities

  $ —       $ —       $ 23,857  
   

 

 

   

 

 

   

 

 

 

Total liabilities at fair value

  $ —       $ —       $ 23,857  
   

 

 

   

 

 

   

 

 

 

Fair value measurements on a recurring basis

December 31, 2011

 

 

                         
    Level 1     Level 2     Level 3  

Convertible securities

  $ —       $ —       $ 23,857  
   

 

 

   

 

 

   

 

 

 

Total liabilities at fair value

  $ —       $ —       $ 23,857