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Cash, Cash Equivalents and Short-term Investments (Tables)
 6 Months Ended
Dec. 31, 2012
Short-term Investments

Marketable securities consisted of the following (in thousands):

 

            December 31, 2012      June 30, 2012  
     

Fair Value

Hierarchy

      Cost     

Unrealized

Gain

(Loss)

     

Estimated

Fair

Value

      Cost     

Unrealized

Gain

(Loss)

     

Estimated

Fair Value

  

Municipal bonds, U.S. government agencies and commercial paper

      Level 2       $ 18,081       $ 8       $ 18,089       $ 31,596       $ 13       $ 31,609   
     

 

 

     

 

 

     

 

 

     

 

 

     

 

 

     

 

 

  
      $ 18,081       $ 8       $ 18,089       $ 31,596       $ 13       $ 31,609