XML 55 R20.htm IDEA: XBRL DOCUMENT v2.4.0.6
Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2013
Fair Value Measurements [Abstract]  
Fair Value Hierarchy

The following table represents the Company's fair value hierarchy for its financial assets and liabilities measured at fair value on a recurring basis (in thousands):

 

    Fair Value at March 31, 2013     Fair Value at December 31, 2012  
    Level 1     Level 2     Level 3     Level 1     Level 2     Level 3  
Assets                                    
Corporate debt securities and auction rate securities   $ -     $ 36,373     $ -     $ -     $ 32,945     $ -  
Total investments   $ -     $ 36,373     $ -     $ -     $ 32,945     $ -  
Liabilities                                                
Warrant liabilities   $ -     $ -     $ 267     $ -     $ -     $ 267  
Reconciliation of Level 3 Assets and Liabilities

The following table provides a reconciliation of the beginning and ending balance of Level 3 assets and liabilities measured on a recurring basis for the three months ended March 31, 2013 (in thousands):

 

   

Fair Value Measurements of

Warrants Using Significant

Unobservable Inputs 

(Level 3)

 
Balance at December 31, 2012   $ 267  
Change in fair value of Warrant liability     -  
Balance at March 31, 2013   $ 267