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OIL AND NATURAL GAS PROPERTIES (Details) - USD ($)
9 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Sep. 30, 2016
Oil and Natural Gas Properties [Line Items]      
Proceeds from the sale of oil and natural gas properties $ 1,238,000 $ 0  
Income taxes receivable 989,000   $ 378,000
Gain on sale of oil and natural gas properties 0 $ 472,000  
Progress and Valhalla June 2017      
Oil and Natural Gas Properties [Line Items]      
Proceeds from the sale of oil and natural gas properties 1,076,000    
Income taxes receivable 552,000    
Miscellaneous Oil And Natural Gas Properties      
Oil and Natural Gas Properties [Line Items]      
Proceeds from the sale of oil and natural gas properties 162,000    
Income taxes receivable $ 67,000