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Fair Value (Tables)
 6 Months Ended
Jun. 30, 2014
Fair Value Disclosures [Abstract]  
Summary of Fair Value

The following are the major categories of assets measured at fair value on a recurring basis as of June 30, 2014 and December 31, 2013, using quoted prices in active markets for identical assets (Level 1); significant other observable inputs (Level 2); and significant unobservable inputs (Level 3):

 

     June 30, 2014  
     (In thousands)  
     (unaudited)  
Description    Quoted Prices
in Active
Markets for
Identical Assets
(Level 1)		      Significant
Other
Observable
Inputs
(Level 2)		      Significant
Unobservable
Inputs
(Level 3)		      Total
    June 30, 2014    		  

Assets measured at fair value

            

Cash and cash equivalents

    $ 52,566       $ —         $ —         $ 52,566   

Restricted cash

      250         —           —           250   
  

 

 

     

 

 

     

 

 

     

 

 

  

Total assets measured at fair value

    $ 52,816       $ —         $ —         $ 52,816   
  

 

 

     

 

 

     

 

 

     

 

 

  

 

     December 31, 2013  
     (In thousands)  
Description    Quoted Prices
in Active
Markets for
Identical Assets
(Level 1)		      Significant
Other
Observable
Inputs
(Level 2)		      Significant
Unobservable
Inputs
(Level 3)		      Total
December 31, 2013		  

Assets measured at fair value

            

Cash and cash equivalents

    $ 10,014       $ —         $ —         $ 10,014   

Restricted cash

      375         —           —           375   

Short term investments

      —           6,191         —           6,191   
  

 

 

     

 

 

     

 

 

     

 

 

  

Total assets measured at fair value

    $ 10,389       $ 6,191       $ —         $ 16,580