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Costs Incurred (Details) (USD $)	3 Months Ended			9 Months Ended		39 Months Ended	9 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Mar. 31, 2013 Native Village of Tetlin Land [Member]	Nov. 29, 2010 Native Village of Tetlin Land [Member] acre
Component of Operating Other Cost and Expense [Line Items]
Initial and Renewal Terms of Leases and Concessions on Undeveloped Acreage							10 years
Percentage of Acreage Available for Renewal	50.00%	50.00%		50.00%		50.00%
Payment by Lessee to Remove Acreage Renewal Restriction		$ 200,000
Leasehold Interest Acreage								675,000
Acquisition of mineral interests	0		0	200,000	0	1,208,886
Exploration costs and claim rentals	278,415		124,903	4,576,952	1,995,480	11,900,613
Total costs incurred	$ 278,415		$ 124,903	$ 4,776,952	$ 1,995,480	$ 13,109,499

X

- Definition

The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring mining properties.

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X

- Definition

The sum of the both capitalized costs incurred and costs expensed during the period of unproved properties excluded from amortization including acquisition costs, exploration costs, development costs, and production costs for mining properties.

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No definition available.

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- Definition

Exploration expenses (including prospecting) and claim rentals related to the mining industry would be included in operating expenses. Exploration costs include costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of mineral reserves.

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- Definition

Initial & Renewal Terms of Leases and Concessions on Undeveloped Acreage

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- Definition

Leasehold Interest Acreage

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- Definition

Payment by Lessee to Remove Acreage Renewal Restriction

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- Definition

Percentage of Acreage Available for Renewal

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