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Other Investments (Details) $ / shares in Units, $ in Thousands	1 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2015 USD ($)	Feb. 28, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)	Mar. 31, 2015 CAD / shares shares	Mar. 31, 2015 $ / shares shares	Feb. 28, 2014 CAD / shares shares	Feb. 28, 2014 $ / shares shares
Subsidiary, Sale of Stock [Line Items]
Proceeds from sale of other investments, net			$ 2,772	$ 10,560
Realized gain (loss) on other investments			(348)	155
Midas Gold Shares [Member]
Subsidiary, Sale of Stock [Line Items]
Number of shares sold | shares						8,000,000	8,000,000	16,000,000	16,000,000
Sale of shares (dollars per share) | (per share)						CAD 0.46	$ 0.36	CAD 0.80	$ 0.73
Proceeds from sale of other investments, net	$ 2,772	$ 10,560	$ 2,772		$ 10,560
Shares owned | shares						7,802,615	7,802,615	15,802,615	15,802,615
Holding percentage	4.90%	11.20%	4.90%
Realized gain (loss) on other investments	$ (348)			$ 155
Lock up period	6 months

X

- Definition

The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities.

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Balance held at close of period in number of shares.

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The cash inflow associated with the sale of other investments not otherwise defined in the taxonomy.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the cost method of accounting.

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Represents the lock up period for a specific transaction, during which time the entity will not enter into an agreement with another party.

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