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OIL AND NATURAL GAS PROPERTIES (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Jan. 31, 2022
Apr. 30, 2021
Jun. 30, 2022
Dec. 31, 2021
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Sep. 30, 2021
Oil and Natural Gas Properties [Line Items]                
Payments to acquire oil and natural gas properties           $ 1,563 $ 348  
Proceeds from the sale of oil and natural gas assets           0 60  
Income taxes receivable     $ 575     575   $ 530
Impairment of assets     $ 0   $ 0 $ 0 $ 630  
Barnwell Industries Inc | Twining, Alberta, Canada                
Oil and Natural Gas Properties [Line Items]                
Payments to acquire oil and natural gas properties $ 1,246 $ 348   $ 317        
Asset retirement obligation assumed $ 1,500              
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