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Summary of Significant Accounting Policies (Details)
12 Months Ended
Jun. 30, 2017
USD ($)
Oil and natural gas properties  
Limitation on Capitalized Costs  
Discount rate for present value (as a percent) 10.00%
Period considered for computing unweighted arithmetic average of oil and natural gas prices (in months) 12 months
Other Property and Equipment | Minimum  
Other Property and Equipment  
Expected lives of the individual assets or group of assets 3 years
Other Property and Equipment | Maximum  
Other Property and Equipment  
Expected lives of the individual assets or group of assets 7 years
Income tax expense  
Other Property and Equipment  
Excess tax deficiency from share-based compensation $ 27,884