Basis of Presentation - Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)	Jun. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unproved Oil and Gas Property, Successful Effort Method	$ 171,000	$ 171,000	$ 608,000
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unproved Oil and Gas Property, Successful Effort Method	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unproved Oil and Gas Property, Successful Effort Method	0	0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unproved Oil and Gas Property, Successful Effort Method	$ 171,000	$ 171,000