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FAIR VALUE MEASUREMENTS (Tables)
 12 Months Ended
Sep. 30, 2013
Fair Value Disclosures [Abstract]  
Fair Value Measurements, Measured on Recurring Basis
The following table categorizes the assets and liabilities in the Consolidated Balance Sheets that are accounted for at fair value on a recurring basis in periods subsequent to initial recognition.
(Thousands)
Quoted
Prices in
Active
Markets
(Level 1)
 
Significant
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
 
Effects of Netting and Cash Margin Receivables
/Payables
 
Total
As of September 30, 2013
 
 
 
 
 
 
 
 
 
Assets
 
 
 
 
 
 
 
 
 
U. S. Stock/Bond Mutual Funds
$
14,500

 
$
—

 
$
—

 
$
—

 
$
14,500

NYMEX/ICE natural gas contracts
4,333

 
330

 
—

 
(2,145
)
 
$
2,518

OTCBB natural gas contracts
—

 
232

 
—

 
(232
)
 
—

NYMEX gasoline and heating oil contracts
105

 
—

 
—

 
(105
)
 
$
—

Natural gas commodity contracts
—

 
1,129

 
150

 
(495
)
 
$
784

Total
$
18,938

 
$
1,691

 
$
150

 
$
(2,977
)
 
$
17,802

Liabilities
 
 
 
 
 
 
 
 
 
NYMEX/ICE natural gas contracts
$
3,687

 
$
321

 
$
—

 
$
(4,008
)
 
$
—

OTCBB natural gas contracts
—

 
5,443

 
—

 
(232
)
 
$
5,211

NYMEX gasoline and heating oil contracts
—

 
—

 
—

 
—

 
$
—

Natural gas commodity contracts
—

 
1,140

 
40

 
(495
)
 
$
685

Total
$
3,687

 
$
6,904

 
$
40

 
$
(4,735
)
 
$
5,896

As of September 30, 2012
 
 
 
 
 
 
 
 
 
Assets
 
 
 
 
 
 
 
 
 
U. S. Stock/Bond Mutual Funds
$
13,187

 
$
—

 
$
—

 
$
—

 
$
13,187

NYMEX/ICE natural gas contracts
7,411

 
994

 
—

 
(8,405
)
 
$
—

NYMEX gasoline and heating oil contracts
344

 
—

 
—

 
(344
)
 
$
—

Natural gas commodity contracts
—

 
3,060

 
113

 
(299
)
 
$
2,874

Total
$
20,942

 
$
4,054

 
$
113

 
$
(9,048
)
 
$
16,061

Liabilities
 
 
 
 
 
 
 
 
 
NYMEX/ICE natural gas contracts
$
12,253

 
$
1,891

 
$
—

 
$
(14,144
)
 
$
—

NYMEX gasoline and heating oil contracts
—

 
—

 
—

 
—

 
$
—

Natural gas commodity contracts
—

 
428

 
4

 
(299
)
 
$
133

Total
$
12,253

 
$
2,319

 
$
4

 
$
(14,443
)
 
$
133
Reconciliation of the Level 3 beginning and ending net derivative balances
The following is a reconciliation of the Level 3 beginning and ending net derivative balances:
(Thousands)
2013
 
2012
Beginning of period
$
109

 
$
13

Settlements
(269
)
 
(54
)
Net losses related to derivatives not held at end of period
(99
)
 
(68
)
Net gains related to derivatives still held at end of period
369

 
218

End of period
$
110

 
$
109