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Available-for-sale Securities (Tables)
9 Months Ended
Sep. 30, 2013
Summary of Available for Sale Securities

The following is a summary of available-for-sale securities at September 30, 2013 (in thousands):

 

     September 30, 2013  
     Amortized Cost      Gross
Unrealized Loss
    Fair Value  

Money market funds

   $ 7,862         $ 7,862   

United States government agency securities

     4,027         (4     4,023   

Corporate debt securities

     24,977         (29     24,948   
  

 

 

    

 

 

   

 

 

 

Total available-for-sale securities

   $ 36,866       $ (33   $ 36,833   
  

 

 

    

 

 

   

 

 

 
Available for Sale Securities by Original Contractual Maturity

Available-for-sale securities at September 30, 2013 and December 31, 2012, consisted of the following by original contractual maturity (in thousands):

 

     September 30, 2013      December 31, 2012  
     Amortized Cost      Fair Value      Amortized Cost      Fair Value  

Due in one year or less

   $ 24,509       $ 24,492       $ 10,268       $ 10,268   

Due greater than one year and less than five years

     12,357         12,341         —           —     
  

 

 

    

 

 

    

 

 

    

 

 

 

Total available-for-sale securities

   $ 36,866       $ 36,833       $ 10,268       $ 10,268