Commitments and Contingencies Royalties (Details)	1 Months Ended		13 Months Ended
Commitments and Contingencies Royalties (Details)	Jul. 31, 2011 USD ($)	Jun. 30, 2011 USD ($)	Jun. 30, 2012 USD ($)	Mar. 31, 2016 USD ($)	Sep. 29, 2014	Sep. 01, 2012	Jul. 15, 2012 USD ($)	May. 31, 2011	Nov. 29, 2010 a
Royalties [Line Items]
Payment to Tetlin to reduce royalty rate	$ 150,000	$ 75,000
Decrease in royalty rates	0.50%	0.25%
Tetlin Lease [Member]
Royalties [Line Items]
Contractual annual exploration costs				$ 350,000
Payment to Tetlin to reduce royalty rate			$ 225,000
Decrease in royalty rates				0.75%
Tetlin Lease [Member] \| Minimum [Member]
Royalties [Line Items]
Royalty rate	1.25%							2.00%
Advance royalties				$ 50,000			$ 75,000
Tetlin Lease [Member] \| Maximum [Member]
Royalties [Line Items]
Royalty rate	4.25%							5.00%
Tetlin Lease [Member] \| Scenario 1 [Member]
Royalties [Line Items]
Increase in royalty rates				0.25%
Payment by Tetlin to increase royalty rate				$ 150,000
Tetlin Lease [Member] \| Scenario 2 [Member]
Royalties [Line Items]
Increase in royalty rates				0.50%
Payment by Tetlin to increase royalty rate				$ 300,000
Tetlin Lease [Member] \| Scenario 3 [Member]
Royalties [Line Items]
Increase in royalty rates				0.75%
Payment by Tetlin to increase royalty rate				$ 450,000
JEX [Member]
Royalties [Line Items]
Overriding royalty interest				3.00%
Native Village of Tetlin Land [Member]
Royalties [Line Items]
Leasehold Interest Acreage \| a									675,000
ALASKA \| JEX [Member]
Royalties [Line Items]
Overriding royalty interest				2.00%	2.00%	2.00%