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INFORMATION RELATING TO THE CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Supplemental disclosure of cash flow information:
Income taxes refunded, net	$ (290)	$ (166)
Supplemental disclosure of non-cash investing and financing activities:
Canadian income tax withholdings on proceeds from the sale of oil and natural gas properties	72	0
Accrued offering costs included in deferred offering costs, additional paid-in capital, and accounts payable	453	0
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	(7)	635
Increase (decrease) in capital expenditure accruals related to oil and natural gas asset retirement obligations	$ 463	$ 545

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Accrued Offering Costs Included in Deferred Offering costs, Additional Paid-in Capital, and Accounts Payable

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The increase (decrease) during the reporting period in the capital expenditure accruals related to oil and natural gas exploration and development.

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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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Amount of noncash consideration received for selling an asset or business through a noncash (or part noncash) transaction.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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