Number of draft Feasability Studies submitted

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+ References

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Amount of loss contingency liability expected to be resolved within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 9

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

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- Definition

The estimated maximum amount of possible loss from the contingency.

+ References

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The estimated minimum amount of possible loss from the contingency.

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COMMITMENTS AND CONTINGENCIES (Details) $ in Millions	Jul. 28, 2015 USD ($)	Jun. 30, 2015 USD ($)
Commitments and Contingencies
Number of draft Feasibility Studies submitted		2
Reserve for estimated life-cycle costs		$ 0.3
Subsequent Event
Commitments and Contingencies
Estimated life-cycle costs, minimum	$ 0.9
Estimated life-cycle costs, maximum	$ 3.5
Minimum
Commitments and Contingencies
Loss contingency, entity portion of potential cost		0.1
Maximum
Commitments and Contingencies
Loss contingency, entity portion of potential cost		$ 0.5