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Marketable Securities
 12 Months Ended
Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]  
Marketable Securities
NOTE 4. MARKETABLE SECURITIES

Certain information regarding our marketable securities was as follows (in thousands):

 

     December 31,  
     2014      2013  

Fair value:

      

Corporate obligations

    $ 1,620       $ 4,277   

Corporate equities

      6         1   
  

 

 

     

 

 

  
$ 1,626    $ 4,278   
  

 

 

     

 

 

  

Cost:

Corporate obligations

 $ 1,620    $ 4,276   

Corporate equities

   6      1   
  

 

 

     

 

 

  
$ 1,626    $ 4,277   
  

 

 

     

 

 

  

Fair value by maturity:

Within one year

 $ 1,620    $ 4,277   

One to two years

   —        —     

Corporate equities

   6      1   
  

 

 

     

 

 

  
$ 1,626    $ 4,278   
  

 

 

     

 

 

  

Gross unrealized holding gains:

Corporate obligations

 $ —      $ 1   

U.S. treasury and agency securities

   —        —     
  

 

 

     

 

 

  
$ —      $ 1   
  

 

 

     

 

 

  

Gross unrealized holding losses:

Corporate obligations

 $ —      $ —     

U.S. treasury and agency securities

   —        —     
  

 

 

     

 

 

  
$ —      $ —     
  

 

 

     

 

 

  

Realized gains and losses on marketable securities were immaterial during 2014, 2013 and 2012.