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Receivables (Table)
3 Months Ended
Jun. 30, 2012
Accounts, Notes, Loans, and Financing Receivable Disclosure [Abstract]  
Schedule of Accounts Receivable [Table Text Block]
        
  June 30, September 30, 
  2012 2011 
 Trade$ 254,517 $ 203,038 
 Vendor rebates and programs  18,387   15,404 
    272,904   218,442 
 Allowance for doubtful accounts  (2,511)   (2,581) 
  $ 270,393 $ 215,861