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Supplemental Disclosure of Cash Flow Information - Schedule of Supplement Cash Flow (Details) - USD ($)
 12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2014
Supplemental Cash Flow Elements [Abstract]      
Income taxes paid $ 540,000 $ 220,000 $ 755,941
Income tax refunds 1,556,999 331,733 0
Non-cash transactions:      
Increase (decrease) in accrued purchases of property and equipment (2,250,048) 5,422,566 (183,766)
Deferred loan costs charged to oil and gas property costs 107,196 0 0
Oil and natural gas property costs attributable to the recognition of asset retirement obligations 140,151 576,039 66,976
Mengel working interest acquired in Delhi Field litigation settlement 596,500 0 0
Royalty rights acquired through non-monetary exchange of patent and trademark assets 108,512 0 0
Previously acquired Company shares swapped by holders to pay stock option exercise price 76,500 0 618,606
Accrued purchases of treasury stock $ (170,283) $ 170,283 $ 0