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Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2012
Fair Value Measurements [Abstract]  
Fair value information related to assets
                                 
          Fair Value Measurements at June 30, 2012 Using  

Description

  June 30,
2012
    Quoted Prices
in Active
Markets
(Level 1)
    Significant
Other
Observable
Inputs
(Level 2)
    Significant
Unobserved
Inputs
(Level 3)
 
          (in thousands)        

Money market funds

  $ 1,170     $ 1,170     $ —       $ —    

Other mutual funds

    1,300       1,300       —         —    
   

 

 

   

 

 

   

 

 

   

 

 

 

Total

  $ 2,470     $ 2,470     $ —       $ —