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Basis of Presentation - Schedule of Finite-Lived Intangible Assets (Details)
12 Months Ended
Sep. 30, 2016
USD ($)
Finite-lived Intangible Assets [Roll Forward]  
Unproved oil and natural gas properties, beginning of period $ 608,000
Activity during fiscal year 0
Change in fair value of intangible asset 0
Disposal of property (437,000)
Unproved oil and natural gas properties, end of period $ 171,000