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Selected Quarterly Financial Data
 12 Months Ended
Sep. 30, 2013
Quarterly Financial Information Disclosure [Abstract]  
Selected Quarterly Financial Data (Unaudited)
Selected Quarterly Financial Data (Unaudited)
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 2013:
 
 
 
 
 
 
 
Operating revenues
 
 
 
 
 
 
 
Natural gas distribution
$
666,787

 
$
905,176

 
$
467,144

 
$
360,386

Regulated transmission and storage
60,681

 
61,848

 
74,041

 
72,330

Nonregulated
399,894

 
428,948

 
421,808

 
348,061

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

 
1,308,996

 
857,935

 
685,171

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


 
Quarter Ended
 
December 31
 
March 31
 
June 30
 
September 30
 
(In thousands, except per share data)
Fiscal year 2012:
 
 
 
 
 
 
 
Operating revenues
 
 
 
 
 
 
 
Natural gas distribution
$
676,113

 
$
871,067

 
$
315,634

 
$
282,516

Regulated transmission and storage
56,759

 
58,037

 
67,073

 
65,482

Nonregulated
444,176

 
370,763

 
256,250

 
280,114

Intersegment eliminations
(93,054
)
 
(74,358
)
 
(62,543
)
 
(75,546
)
 
1,083,994

 
1,225,509

 
576,414

 
552,566

Gross profit
355,392

 
425,787

 
293,171

 
249,389

Operating income
139,471

 
202,432

 
81,546

 
22,791

Income (loss) from continuing operations
62,384

 
102,084

 
28,014

 
(286
)
Income from discontinued operations
6,123

 
7,027

 
3,118

 
1,904

Gain on sale of discontinued operations
—

 
—

 
—

 
6,349

Net income
68,507

 
109,111

 
31,132

 
7,967

Basic earnings per share
 
 
 
 
 
 
 
Income per share from continuing operations
$
0.68

 
$
1.12

 
$
0.31

 
$
—

Income per share from discontinued operations
$
0.07

 
0.08

 
$
0.03

 
$
0.09

Net income per share — basic
$
0.75

 
$
1.20

 
$
0.34

 
$
0.09

Diluted earnings per share
 
 
 
 
 
 
 
Income per share from continuing operations
$
0.68

 
$
1.12

 
$
0.31

 
$
—

Income per share from discontinued operations
$
0.07

 
$
0.08

 
$
0.03

 
$
0.09

Net income per share — diluted
$
0.75

 
$
1.20

 
$
0.34

 
$
0.09