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Selected Quarterly Financial Data (Table)
 12 Months Ended
Sep. 30, 2014
Quarterly Financial Information Disclosure [Abstract]  
Schedule of Quarterly Financial Information
Summarized unaudited quarterly financial data is presented below. The sum of net income per share by quarter may not equal the net income per share for the fiscal year due to variations in the weighted average shares outstanding used in computing such amounts. Our businesses are seasonal due to weather conditions in our service areas. For further information on its effects on quarterly results, see the “Results of Operations” discussion included in the “Management’s Discussion and Analysis of Financial Condition and Results of Operations” section herein.
 
Quarter Ended
 
December 31
 
March 31
 
June 30
 
September 30
 
(In thousands, except per share data)
Fiscal year 2014:
 
 
 
 
 
 
 
Operating revenues
 
 
 
 
 
 
 
Regulated distribution
$
843,865

 
$
1,290,960

 
$
517,707

 
$
409,014

Regulated pipeline
71,341

 
73,615

 
87,189

 
86,314

Nonregulated
447,721

 
757,683

 
465,033

 
396,855

Intersegment eliminations
(107,779
)
 
(157,936
)
 
(127,211
)
 
(113,455
)
 
1,255,148

 
1,964,322

 
942,718

 
778,728

Gross profit
388,957

 
496,277

 
359,533

 
337,659

Operating income
170,720

 
250,080

 
106,605

 
83,944

Net income
87,016

 
133,367

 
45,721

 
23,713

Net income per share — basic
$
0.94

 
$
1.38

 
$
0.45

 
$
0.23

Net income per share — diluted
$
0.94

 
$
1.38

 
$
0.45

 
$
0.23


 
Quarter Ended
 
December 31
 
March 31
 
June 30
 
September 30
 
(In thousands, except per share data)
Fiscal year 2013:
 
 
 
 
 
 
 
Operating revenues
 
 
 
 
 
 
 
Regulated distribution
$
666,787

 
$
905,176

 
$
467,144

 
$
360,386

Regulated pipeline
60,681

 
61,848

 
74,041

 
72,330

Nonregulated
399,894

 
428,948

 
421,808

 
337,264

Intersegment eliminations
(93,207
)
 
(86,976
)
 
(105,058
)
 
(95,606
)
 
1,034,155

 
1,308,996

 
857,935

 
674,374

Gross profit
362,362

 
432,751

 
316,497

 
300,440

Operating income
154,922

 
210,178

 
86,396

 
50,383

Income from continuing operations
77,348

 
112,340

 
33,474

 
7,536

Income from discontinued operations
3,117

 
4,085

 
—

 
—

Gain on sale of discontinued operations
—

 
—

 
5,294

 
—

Net income
80,465

 
116,425

 
38,768

 
7,536

Basic earnings per share
 
 
 
 
 
 
 
Income per share from continuing operations
$
0.85

 
$
1.24

 
$
0.37

 
$
0.08

Income per share from discontinued operations
$
0.04

 
0.04

 
$
0.06

 
$
—

Net income per share — basic
$
0.89

 
$
1.28

 
$
0.43

 
$
0.08

Diluted earnings per share
 
 
 
 
 
 
 
Income per share from continuing operations
$
0.85

 
$
1.23

 
$
0.36

 
$
0.08

Income per share from discontinued operations
$
0.03

 
$
0.04

 
$
0.06

 
$
—

Net income per share — diluted
$
0.88

 
$
1.27

 
$
0.42

 
$
0.08