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OIL AND NATURAL GAS PROPERTIES (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Aug. 28, 2025
Aug. 08, 2025
Sep. 30, 2024
Jul. 31, 2024
Apr. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Oil and Natural Gas Properties [Line Items]              
Proceeds from the sale of oil and natural gas assets           $ 2,722 $ 441
Loss on sale of assets           636 0
Impairment of assets           865 2,885
United States              
Oil and Natural Gas Properties [Line Items]              
Proceeds from the sale of oil and natural gas assets   $ 2,300          
Loss on sale of assets           636  
Oil and natural gas              
Oil and Natural Gas Properties [Line Items]              
Impairment of assets           865 2,885
Oil and natural gas | United States              
Oil and Natural Gas Properties [Line Items]              
Impairment of assets           $ 865 721
Oil and natural gas | Canada              
Oil and Natural Gas Properties [Line Items]              
Impairment of assets             2,164
Barnwell Industries Inc | Medicine River, Alberta, Canada              
Oil and Natural Gas Properties [Line Items]              
Proceeds from the sale of oil and natural gas assets $ 288            
Barnwell Industries Inc | Kaybob, Alberta, Canada              
Oil and Natural Gas Properties [Line Items]              
Proceeds from the sale of oil and natural gas assets         $ 441    
Barnwell Industries Inc | Bonanza and Balsam, Alberta, Canada              
Oil and Natural Gas Properties [Line Items]              
Overriding royalty percentage       4.00%      
Amount of the full cost pool and abandonment liabilities reduced       $ 153      
Barnwell Industries Inc | Wood River, Alberta, Canada              
Oil and Natural Gas Properties [Line Items]              
Proceeds from the sale of oil and natural gas assets     $ 292        
Income taxes receivable     $ 38       $ 38