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Unaudited Quarterly Financial Information Unaudited Quarterly Financial Information (Tables)
 12 Months Ended
Sep. 30, 2014
Quarterly Financial Information Disclosure [Abstract]  
Unaudited Quarterly Financial Information
Unaudited Quarterly Financial Information
2014
 
First
 
Second
 
Third
 
Fourth
 
Total
Operating revenues
$
2,382

 
$
2,938

 
$
2,651

 
$
3,166

 
$
11,137

Operating expenses
2,164

 
2,362

 
2,453

 
2,569

 
9,548

Operating income
218

 
576

 
198

 
597

 
1,589

Net income (loss)
(67
)
 
295

 
(81
)
 
322

 
469


Unaudited Quarterly Financial Information
2013
 
First
 
Second
 
Third
 
Fourth
 
Total
Operating revenues
$
2,579

 
$
2,741

 
$
2,602

 
$
3,034

 
$
10,956

Operating expenses
2,523

 
2,380

 
2,324

 
2,276

 
9,503

Operating income
56

 
361

 
278

 
758

 
1,453

Net income (loss)
(245
)
 
54

 
(12
)
 
474

 
271