Represents the amortization of fair value increments from the equity method investments.

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- Definition

The amount of net income (loss) reported by an equity method investment of the entity expressed as percentage.

+ References

No definition available.

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- Definition

Represents the revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an equity method investment of the entity expressed as percentage.

+ References

No definition available.

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee, before amortization, to which the equity method of accounting is applied.

+ References

No definition available.

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- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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

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Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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- Definition

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

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The amount of net income (loss) reported by an equity method investment of the entity.

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The amount of revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an equity method investment of the entity.

+ References

No definition available.

+ Details

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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-Number 210

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Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

+ References

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Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.

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INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended			3 Months Ended		5 Months Ended	6 Months Ended		12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Jun. 30, 2013 MSC	Jun. 30, 2012 MSC	Jun. 30, 2012 MSC	Jun. 30, 2013 MSC	Jun. 30, 2012 MSC	Dec. 31, 2012 MSC	Jan. 24, 2012 MSC Minera Andes
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE
Sales percentage						100.00%	100.00%	100.00%	100.00%
Sales						$ 68,556	$ 56,375	$ 96,603	$ 112,369
Net income percentage						100.00%	100.00%	100.00%	100.00%
Net income						124	3,255	11,422	2,564
Ownership interest (as a percent)						49.00%			49.00%			49.00%
Net income on investment in MSC						61	1,595	5,597	1,256		25,301
Amortization of fair value increments						(1,612)	(916)	(1,869)	(3,044)	(1,869)	(4,466)
(Loss) income on investment in MSC, net of amortization	(1,551)	679	(1,788)	3,728		(1,551)	679	3,728	(1,788)
Current assets	57,804		57,804		91,918	124,300			124,300
Total assets	982,371		982,371		1,150,937	532,400			532,400
Current liabilities	12,005		12,005		25,195	61,600			61,600
Total liabilities	228,296		228,296		261,346	172,600			172,600
Impairment of investment in MSC	$ 95,878		$ 95,878			$ 95,900			$ 95,878