Commitments and Contingencies Royalties (Details) (USD $)
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1 Months Ended | 3 Months Ended | 13 Months Ended | 12 Months Ended | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jul. 31, 2011
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Jun. 30, 2011
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Dec. 31, 2012
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
JEX [Member]
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Jun. 30, 2012
Tetlin Lease [Member]
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Jun. 30, 2014
Tetlin Lease [Member]
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Jun. 30, 2014
Tetlin Lease [Member]
Minimum [Member]
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Jul. 15, 2012
Tetlin Lease [Member]
Minimum [Member]
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Jul. 31, 2011
Tetlin Lease [Member]
Minimum [Member]
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May 31, 2011
Tetlin Lease [Member]
Minimum [Member]
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Jul. 31, 2011
Tetlin Lease [Member]
Maximum [Member]
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May 31, 2011
Tetlin Lease [Member]
Maximum [Member]
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Jun. 30, 2014
Tetlin Lease [Member]
Scenario 1 [Member]
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Jun. 30, 2014
Tetlin Lease [Member]
Scenario 2 [Member]
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Jun. 30, 2014
Tetlin Lease [Member]
Scenario 3 [Member]
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Jun. 30, 2014
Native Village of Tetlin Land [Member]
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Nov. 29, 2010
Native Village of Tetlin Land [Member]
acre
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Royalties [Line Items] | |||||||||||||||||||
Initial and Renewal Terms of Leases and Concessions on Undeveloped Acreage | 10 years | ||||||||||||||||||
Payment by Lessee to Remove Acreage Renewal Restriction | $ 200,000 | ||||||||||||||||||
Percentage of Acreage Available for Renewal | 50.00% | 50.00% | |||||||||||||||||
Leasehold Interest Acreage | 675,000 | ||||||||||||||||||
Contractual annual exploration costs | 350,000 | ||||||||||||||||||
Royalty rate | 1.25% | 2.00% | 4.25% | 5.00% | |||||||||||||||
Payment to Tetlin to reduce royalty rate | 150,000 | 75,000 | 225,000 | ||||||||||||||||
Decrease in royalty rates | 0.50% | 0.25% | 0.75% | ||||||||||||||||
Increase in royalty rates | 0.25% | 0.50% | 0.75% | ||||||||||||||||
Payment by Tetlin to increase royalty rate | 150,000 | 300,000 | 450,000 | ||||||||||||||||
Advance royalties | $ 50,000 | $ 75,000 | |||||||||||||||||
Overriding royalty interest | 2.00% |