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Schedule II (Tables) (Allowance for Doubtful Accounts [Member])
12 Months Ended
Sep. 30, 2011
Allowance for Doubtful Accounts [Member]
 
Schedule II
                                         
Column A   Column B     Column C     Column D     Column E  
            Additions              
    Balance at     Charged to     Charged to              
    Beginning of     Costs and     Other     Deductions     Balance at  
Description   Year     Expenses     Accounts (a)     (b)     End of Year  
Allowance for doubtful accounts:
                                        
Fiscal year 2011
   $ 2,228     $ 1,028     $ 159     $ (1,093 )   $ 2,322  
Fiscal year 2010
     2,660       431       74       (937 )     2,228  
Fiscal year 2009
     1,648       1,274       1,003       (1,265 )     2,660