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FAIR VALUE MEASUREMENTS (Details) (USD $)
In Thousands
Sep. 30, 2011
Jun. 30, 2011
Financial assets measured at fair value on recurring basis  
Marketable equity securities$ 23,528$ 28,876
Recurring basis | Fair value
  
Financial assets measured at fair value on recurring basis  
Money market investments284 
Marketable equity securities23,528 
Total assets23,812 
Recurring basis | Level 1
  
Financial assets measured at fair value on recurring basis  
Money market investments284 
Marketable equity securities23,528 
Total assets$ 23,812