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OIL AND NATURAL GAS PROPERTIES (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Apr. 08, 2021 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2019 | Jun. 30, 2021 | Jun. 30, 2020 | Sep. 30, 2020
Oil and Natural Gas Properties [Line Items] |  |  |  |  |  |  |
Proceeds from the sale of oil and natural gas assets |  |  |  |  | $ 60 | $ 608 |
Income taxes receivable |  | $ 59 |  |  | 59 |  | $ 472
Payments to acquire oil and natural gas properties |  |  |  |  | 348 | 0 |
Impairment of assets |  | $ 0 | $ 2,689 |  | $ 630 | $ 4,326 |
Barnwell Industries Inc | Hillsdown, Alberta, Canada |  |  |  |  |  |  |
Oil and Natural Gas Properties [Line Items] |  |  |  |  |  |  |
Proceeds from the sale of oil and natural gas assets | $ 132 |  |  |  |  |  |
Income taxes receivable | 72 |  |  |  |  |  |
Barnwell Industries Inc | Progress |  |  |  |  |  |  |
Oil and Natural Gas Properties [Line Items] |  |  |  |  |  |  |
Proceeds from the sale of oil and natural gas assets |  |  |  | $ 594 |  |  |
Barnwell Industries Inc | North Twining, Alberta, Canada |  |  |  |  |  |  |
Oil and Natural Gas Properties [Line Items] |  |  |  |  |  |  |
Payments to acquire oil and natural gas properties | $ 348 |  |  |  |  |  |

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