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Supplemental Disclosure of Cash Flow Information (Details) (USD $)
 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
Supplemental Disclosure of Cash Flow Information      
Income taxes paid $ 699,874 $ 895,000 $ 229,802
Income tax refunds and net operating loss carry-back received     979,177
Non-cash transactions:      
Change in accounts payable used to acquire oil and natural gas leasehold interests and develop oil and natural gas properties 157,675 (196,396) (91,483)
Change in amount due to joint venture partner used to acquire oil and natural gas leasehold interests and develop oil and natural gas properties (1,692,997) 1,958,029  
Oil and natural gas property costs attributable to the recognition of asset retirement obligations $ 65,575 $ 93,522 $ 15,000