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Discontinued Operations (Tables)
12 Months Ended
Sep. 30, 2012
Discontinues Operations [Abstract]  
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]
Results of discontinued operations consist of the following:
(Thousands of Dollars)
2012

 
2011

 
2010

 
 
 
 
 
 
Operating revenue
27,852

 
28,785

 
32,203

 
 
 
 
 
 
Loss from discontinued operations, before income taxes
(4,076
)
 
(2,011
)
 
(1,805
)
Income tax benefit
(1,549
)
 
(765
)
 
(686
)
Net loss
(2,527
)
 
(1,246
)
 
(1,119
)