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Allowance For Doubtful Accounts (Tables)
 12 Months Ended
Sep. 30, 2012
Receivables [Abstract]  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Valuation and qualifying account information related to the allowance for doubtful accounts receivable related to continuing operations is as follows:
(Thousands of Dollars)
2012

 
2011

 
2010

 
 
 
 
 
 
Balance, beginning of year
5,387

 
5,262

 
5,853

Additions charged to expense
1,448

 
2,497

 
2,903

Deductions from reserves
(1,945
)
 
(2,372
)
 
(3,494
)
Balance, end of year
4,890

 
5,387

 
5,262