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COMMON STOCK EQUITY (Tables)
 9 Months Ended
Jun. 30, 2014
Equity [Abstract]  
Changes in Common Stock Equity
Changes in common stock equity during the nine months ended June 30, 2014, 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 as of September 30, 2013
41,962

$
112,563

$
300,196

 
$
(1,621
)
 
$
(128,638
)
$
604,884

$
887,384

Net income
 
 
 
 
 
 
 
166,390

166,390

Other comprehensive income
 
 
 
 
675

 
 
 
675

Common stock issued under stock plans
324

214

4,187

 

 
9,685


14,086

Tax benefits from stock plans
 
 
348

 
 
 
 
 
348

Cash dividend declared ($1.26 per share)
 
 
 
 
 
 
 
(53,024
)
(53,024
)
Treasury stock and other
(118
)
 
 
 
 
 
(2,774
)
 
(2,774
)
Balance as of June 30, 2014
42,168

$
112,777

$
304,731

 
$
(946
)
 
$
(121,727
)
$
718,250

$
1,013,085
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 as of September 30, 2013
$
5,400

 
$
12

 
$
(7,033
)
 
$
(1,621
)
Other comprehensive income, net of tax
 
 
 
 
 
 
 
Other comprehensive income (loss), before reclassifications, net of tax of $(150), $91, $0, $(59)
216

 
(156
)
 
—

 
60

Amounts reclassified from accumulated other comprehensive income, net of tax of $0, $(77), $(334), $(411)
—

 
132

(1) 
483

(2) 
615

Net current-period other comprehensive income (loss), net of tax of $(150), $14, $(334), $(470)
216

 
(24
)
 
483

 
675

Balance as of June 30, 2014
$
5,616

 
$
(12
)
 
$
(6,550
)
 
$
(946
)
 
 
 
 
 
 
 
 
Balance as of September 30, 2012
$
4,921

 
$
51

 
$
(15,743
)
 
$
(10,771
)
Other comprehensive income, net of tax
 
 
 
 
 
 
 
Other comprehensive income (loss), before reclassifications, net of tax of $(390), $31, $0, $(359)
565

 
(54
)
 
—

 
511

Amounts reclassified from accumulated other comprehensive income, net of tax of $155, $(8) $(608), $(461)
(225
)
 
15

(1) 
1,005

(2) 
795

Net current-period other comprehensive income (loss), net of tax of $(235), $23, $(608), $(820)
340

 
(39
)
 
1,005

 
1,306

Balance as of June 30, 2013
$
5,261

 
$
12

 
$
(14,738
)
 
$
(9,465
)
(1)
Consists of realized losses related to foreign currency derivatives, which are reclassified to gas purchases in the Unaudited Condensed Consolidated Statements of Operations.
(2)
Included in the computation of net periodic pension cost, a component of operations and maintenance expense in the Unaudited Condensed Consolidated Statements of Operations.