Supplemental Disclosures about Oil and Natural Gas Producing Properties (unaudited) (Details 4) (USD $)	12 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Changes in the standardized measure of discounted future net cash flows applicable to proved crude oil, natural gas liquids, and natural gas reserves
Balance, beginning of year	$ 283,597,493	$ 228,447,954	$ 161,626,649
Net changes in sales prices and production costs related to future production	(35,184,725)	76,942,613	57,178,860
Changes in estimated future development costs	(566,125)	6,340,123	(16,028,728)
Sales of oil and gas produced during the period, net of production costs	(19,569,182)	(16,187,039)	(6,151,549)
Net change due to extensions, discoveries, and improved recovery		1,606,122	623,446
Net change due to revisions in quantity estimates	64,817,544	(11,975,496)	56,766,220
Net change due to sales of minerals in place	(34,119,027)		(8,233,734)
Development costs incurred during the period	747,656	(2,639,398)	2,416,565
Accretion of discount	41,678,733	22,568,868	26,597,834
Net change in discounted income taxes	10,175,957	(15,026,628)	(42,490,270)
Other	(4,357,625)	(6,479,626)	(3,857,339)
Balance, end of year	$ 307,220,699	$ 283,597,493	$ 228,447,954

The increase in the net discounted value of the proved oil and gas reserves due only to the passage of time.

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The change in the discounted value of the proved oil and gas reserves due to financial transactions where reserves (minerals in place) were sold.

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This is the amount that proved oil and gas reserves increased due to extensions (increased estimates in the size of proven reserves), discoveries, additions, and improved recovery (increase in ability to extract oil and gas from existing reserves).

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The increase (decrease) in the evaluation or calculation of the costs that will be required in future periods to make it possible to extract or process proved oil and gas reserves.

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The increase (decrease) in the estimate of future income taxes that will be due on future pretax net cash flows relating to the enterprise's proved oil and gas reserves.

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The increase (decrease) in sales and transfer prices and in production (lifting) costs related to future production. The effects of changes in prices and costs are computed before the effects of changes in quantities.

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The actual costs incurred during the reporting period to make it possible to extract or process proved oil and gas reserves. These costs were previously estimated and reduced the estimate of discounted future cash flows from oil and gas reserves.

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Any changes made during the period to the evaluation or calculation of the estimated quantity of oil or gas in proved reserves.

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The amount of sales or transfers of oil gas that was previously included in proved oil and gas reserves. This amount is net of production costs.

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Changes in the standardized measure of discounted future net cash flows relating to proved oil and gas reserves that are not otherwise specified in the taxonomy.

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The balance as of the balance sheet date of the standardized measure of discounted future net cash flow relating to proved oil and gas reserves.

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