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INFORMATION RELATING TO THE CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Details) (USD $)	6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Supplemental disclosures of cash flow information:
Interest	$ 285,000	$ 388,000
Income taxes	215,000	455,000
Oil and natural gas
Supplemental disclosures of cash flow information:
Increase (Decrease) in capital expenditure accruals related to oil and natural gas exploration and development	1,450,000	(2,153,000)
Increase in capital expenditure accruals related to oil and natural gas asset retirement obligations	$ 48,000	$ 28,000

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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