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SUPPLEMENTAL OIL AND GAS INFORMATION (UNAUDITED) (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Property acquisition:
Unproved		$ 9,226	$ 185
Proved	90,834
Exploration	28,556	26,882	15,232
Total costs incurred	119,390	36,108	15,417
Republic of Guinea
Property acquisition:
Unproved		9,226	185
Proved	90,834
Exploration	28,556	26,882	15,232
Total costs incurred	$ 119,390	$ 36,108	$ 15,417

- Definition

Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have proved reserves.

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- Definition

Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have unproved reserves.

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- Definition

Exploration costs incurred, including capitalized costs and costs charged to expense, in oil and gas activities.

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