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COMMON STOCK EQUITY (Tables)
 6 Months Ended
Mar. 31, 2016
Equity [Abstract]  
Changes in Common Stock Equity
Changes in common stock equity during the six months ended March 31, 2016, are as follows:
(Thousands)
Number of Shares
Common Stock
Premium on Common Stock
Accumulated Other Comprehensive (Loss) Income
Treasury Stock And Other
Retained Earnings
Total
Balance at September 30, 2015
85,531

$
220,838

$
209,931

 
$
(9,394
)
 
$
(92,164
)
$
777,745

$
1,106,956

Net income



 

 

121,975

121,975

Other comprehensive income



 
8,719

 


8,719

Common stock issued:
 
 
 
 
 
 
 
 
 
Incentive plan
317

795

8,356

 

 



9,151

Dividend reinvestment plan
260


(2,271
)
 

 
10,469


8,198

Cash dividend declared ($.48 per share)



 

 

(41,227
)
(41,227
)
Treasury stock and other
(139
)

(55
)
 

 
(6,235
)

(6,290
)
Balance at March 31, 2016
85,969

$
221,633

$
215,961

 
$
(675
)
 
$
(87,930
)
$
858,493

$
1,207,482
Components of Accumulated Other Comprehensive Income, Net of Tax
The following table presents the changes in the components of accumulated other comprehensive income, net of related tax effects:
(Thousands)
Available for Sale Securities
Cash Flow Hedges
Postemployment Benefit Obligation
Total
Balance at September 30, 2015
$
6,385

 
$
—

 
$
(15,779
)
 
$
(9,394
)
Other comprehensive income, net of tax
 
 
 
 
 
 
 
Other comprehensive income (loss), before reclassifications, net of tax of $(5,768), $13, $0, $(5,755)
8,201

 
(22
)
 
—

 
8,179

Amounts reclassified from accumulated other comprehensive income, net of tax of $0, $(15), $(349), $(364)
—

 
27

(1) 
513

(2) 
540

Net current-period other comprehensive income, net of tax of ($5,768), $(2), $(349), $(6,119)
8,201

 
5

 
513

 
8,719

Balance at March 31, 2016
$
14,586

 
$
5

 
$
(15,266
)
 
$
(675
)
 
 
 
 
 
 
 
 
Balance at September 30, 2014
$
4,782

 
$
(93
)
 
$
(10,283
)
 
$
(5,594
)
Other comprehensive income (loss), net of tax
 
 
 
 
 
 
 
Other comprehensive income (loss), before reclassifications, net of tax of $(75), $149, $0, $74
109

 
(256
)
 
—

 
(147
)
Amounts reclassified from accumulated other comprehensive income, net of tax of $0, $(199), $(337), $(536)
—

 
343

(1) 
486

(2) 
829

Net current-period other comprehensive income, net of tax of $(75), $(50), $(337), $(462)
109

 
87

 
486

 
682

Balance as of March 31, 2015
$
4,891

 
$
(6
)
 
$
(9,797
)
 
$
(4,912
)
(1)
Consists of realized losses related to foreign currency derivatives, which are reclassified to gas purchases on the Unaudited Condensed Consolidated Statements of Operations.
(2)
Included in the computation of net periodic pension cost, a component of operations and maintenance expense on the Unaudited Condensed Consolidated Statements of Operations.