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Supplemental Disclosures about Oil and Natural Gas Producing Properties (unaudited) - Schedule of NYMEX Prices Used in Determining Future Cash Flows (Details)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Gas (per million BTU)
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Commodity Prices Used in Determining Future Cash Flows	4.10	3.44	3.15
Oil (per barrel)
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Commodity Prices Used in Determining Future Cash Flows	100.37	91.51	95.67

X

- Definition

Represents the unweighted arithmetic average first-day-of-the-month commodity prices used in determining future cash flows.

+ References

No definition available.

+ Details

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X

- Details

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