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PROPERTY AND EQUIPMENT AND ASSET RETIREMENT OBLIGATION - NARRATIVE (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2025 | Jul. 31, 2021 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2021
Property and equipment |  |  |  |  |
Asset retirement obligation |  |  | $ 442 | $ 0 |
Revision of estimated obligation |  |  | (614) | 1,462 |
Obligations incurred on new wells drilled or acquired |  |  | 37 | $ 21 |
Abandonment and reclamation cost, cash deposit |  | $ 888 |  |  | $ 1,525
Abandonment and reclamation cost, cumulative cash deposit reduction |  |  | $ (353) |  |
Minimum |  |  |  |  |
Property and equipment |  |  |  |  |
Discount rate for ARO |  |  | 6.00% |  |
Maximum |  |  |  |  |
Property and equipment |  |  |  |  |
Discount rate for ARO |  |  | 13.50% |  |
Forecast |  |  |  |  |
Property and equipment |  |  |  |  |
Abandonment and reclamation cost, cash deposit | $ 637 |  |  |  |

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- Definition Amount of asset retirement obligations incurred during the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-1 + Details
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- Definition Amount of increase (decrease) in the asset retirement obligation from changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-1 + Details
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