INFORMATION RELATING TO THE CONSOLIDATED STATEMENTS OF CASH FLOWS - NARRATIVE (Details) - Oil and natural gas - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2025	Sep. 30, 2024
Supplemental disclosures of cash flow information:
Increase (decrease) in capital expenditure accruals related to oil and natural gas exploration and development	$ (2,136)	$ 1,291
Increase (decrease) in capital expenditure accruals related to oil and natural gas asset retirement obligations	$ (684)	$ (577)

The increase (decrease) during the reporting period in the carrying amount of asset retirement obligations.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Name:	us-gaap_IncreaseDecreaseInAssetRetirementObligations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration