FAIR VALUE MEASUREMENTS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Sep. 30, 2013	Sep. 30, 2012
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
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
Fair Value, Measurements, Recurring [Member]
Assets
U. S. Stock/Bond Mutual Funds	14,500	13,187
NYMEX/ICE natural gas contracts	2,518	0
OTCBB natural gas contracts	0
NYMEX gasoline and heating oil contracts	0	0
Natural gas commodity contracts	784	2,874
Total	17,802	16,061
Liabilities
NYMEX/ICE natural gas contracts	0	0
OTCBB natural gas contracts	5,211
NYMEX gasoline and heating oil contracts	0	0
Natural gas commodity contracts	685	133
Total	5,896	133
Fair Value, Measurements, Recurring [Member] \| Quoted Prices in Active Markets (Level 1) [Member]
Assets
U. S. Stock/Bond Mutual Funds	14,500	13,187
NYMEX/ICE natural gas contracts	4,333	7,411
OTCBB natural gas contracts	0
NYMEX gasoline and heating oil contracts	105	344
Natural gas commodity contracts	0	0
Total	18,938	20,942
Liabilities
NYMEX/ICE natural gas contracts	3,687	12,253
OTCBB natural gas contracts	0
NYMEX gasoline and heating oil contracts	0	0
Natural gas commodity contracts	0	0
Total	3,687	12,253
Fair Value, Measurements, Recurring [Member] \| Significant Observable Inputs (Level 2) [Member]
Assets
U. S. Stock/Bond Mutual Funds	0	0
NYMEX/ICE natural gas contracts	330	994
OTCBB natural gas contracts	232
NYMEX gasoline and heating oil contracts	0	0
Natural gas commodity contracts	1,129	3,060
Total	1,691	4,054
Liabilities
NYMEX/ICE natural gas contracts	321	1,891
OTCBB natural gas contracts	5,443
NYMEX gasoline and heating oil contracts	0	0
Natural gas commodity contracts	1,140	428
Total	6,904	2,319
Fair Value, Measurements, Recurring [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Assets
U. S. Stock/Bond Mutual Funds	0	0
NYMEX/ICE natural gas contracts	0	0
OTCBB natural gas contracts	0
NYMEX gasoline and heating oil contracts	0	0
Natural gas commodity contracts	150	113
Total	150	113
Liabilities
NYMEX/ICE natural gas contracts	0	0
OTCBB natural gas contracts	0
NYMEX gasoline and heating oil contracts	0	0
Natural gas commodity contracts	40	4
Total	40	4
Fair Value, Measurements, Recurring [Member] \| Effects of Netting and Cash Margin Receivables /Payables
Assets
U. S. Stock/Bond Mutual Funds	0	0
NYMEX/ICE natural gas contracts	(2,145)	(8,405)
OTCBB natural gas contracts	(232)
NYMEX gasoline and heating oil contracts	(105)	(344)
Natural gas commodity contracts	(495)	(299)
Total	(2,977)	(9,048)
Liabilities
NYMEX/ICE natural gas contracts	(4,008)	(14,144)
OTCBB natural gas contracts	(232)
NYMEX gasoline and heating oil contracts	0	0
Natural gas commodity contracts	(495)	(299)
Total	$ (4,735)	$ (14,443)

Derivative Assets, OTCBB Natural Gas Contracts, Fair Value

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Derivative Liabilities, OTCBB Natural Gas Contracts, Fair Value

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No definition available.

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This element represents a certain statement of financial position asset caption which represents a class of gasoline and heating oil derivative contract assets, or which may include an individual asset, measured at fair value on a recurring basis.

+ References

No definition available.

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This element represents a certain statement of financial position asset caption which represents a class of natural gas derivative commodity contract assets, or which may include an individual asset, measured at fair value on a recurring basis.

+ References

No definition available.

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This element represents a certain statement of financial position asset caption which represents a class of natural gas derivative contract assets, or which may include an individual asset, measured at fair value on a recurring basis.

+ References

No definition available.

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This element represents a certain statement of financial position asset caption which represents a class of assets, or which may include an individual asset, measured at fair value on a recurring basis.

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No definition available.

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This element represents a certain statement of financial position liability caption which represents a class of gasoline and heating oil derivative contract liabilities, or which may include an individual liability, measured at fair value on a recurring basis.

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No definition available.

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This element represents a certain statement of financial position liability caption which represents a class of natural gas derivative commodity contract liabilities, or which may include an individual liability, measured at fair value on a recurring basis.

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No definition available.

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This element represents a certain statement of financial position liability caption which represents a class of natural gas derivative contract liabilities, or which may include an individual liability, measured at fair value on a recurring basis.

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No definition available.

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This element represents the gains or losses for the period (realized and unrealized) related to assets and liabilities using significant unobservable inputs (Level 3) not held as of the reporting date.

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No definition available.

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This element represents the change in unrealized gains or losses related to assets and liabilities measured at fair value using significant unobservable inputs (Level 3), still held as of the reporting date.

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No definition available.

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Amount of purchases, (sales), issuances and (settlements) of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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-SubTopic 10

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Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-SubTopic 10

-Section 50

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Fair value of financial and nonfinancial obligations.

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