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Schedule II - Valuation and Qualifying Accounts (Tables)
 12 Months Ended
Jun. 30, 2012
Allowance for Credit Losses on Financing Receivables [Table Text Block]
Description
 
Balance at
Beginning
of Period
   
Charged to
Costs and
Expenses
   
Charged to
Other
Accounts
   
Deductions
   
Balance at
End of
Period
 
Year ended June 30, 2012 allowance for doubtful accounts
  $ 1,434     $ 891     $ -     $ (471 )   $ 1,854  
Year ended June 30, 2011 allowance for doubtful accounts
  $ 1,090     $ 561     $ -     $ (217 )   $ 1,434  
Year ended June 30, 2010 allowance for doubtful accounts
  $ 754     $ 583     $ -     $ (247 )   $ 1,090