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OIL AND NATURAL GAS PROPERTIES (Details) - USD ($)
3 Months Ended 9 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Jun. 30, 2019
Dec. 31, 2018
Jun. 30, 2020
Jun. 30, 2019
Oil and Natural Gas Properties [Line Items]            
Proceeds from sale of oil and natural gas assets         $ 608,000 $ 1,519,000
Impairment of assets $ 2,689,000   $ 0   $ 4,326,000 $ 2,413,000
Future capital expenditure, development of proved undeveloped reserves, over next five years   $ 12,000,000        
Wood River and Twining            
Oil and Natural Gas Properties [Line Items]            
Acquisition costs       $ 355,000    
Barnwell Industries Inc | Progress            
Oil and Natural Gas Properties [Line Items]            
Proceeds from sale of oil and natural gas assets   $ 594,000