Additional Derivative Financial Instruments And Fair Value Of Financial Instruments Textuals Abstract.

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Contract Expiration Date.

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Derivative Financial Instruments and Fair Value of Financial Instruments.

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Fair value of gold and silver including embedded derivative.

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Foreign exchange contracts of Mxp.

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Further payment made on number of additional Ounces of Gold.

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Gold leased from MIC.

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Minimum obligation paid in monthly payments.

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Number of shares that can be acquired through warrants.

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Outstanding call options of gold.

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Outstanding provisionally priced sales.

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Outstanding provisionally priced sales consists of Gold.

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Outstanding provisionally priced sales consists of silver.

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Outstanding put options of gold.

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Received silver in connection with sales of asset.

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Weighted Average Strike Price Of Call Options Written.

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Weighted Average Strike Price Of Put Options.

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Aggregate notional amount of derivative expressed in nonmonetary units. For example the number of barrels specified in a fuel oil forward purchase contract.

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The average contractual rate at which a foreign currency can be purchased or sold under the terms of a group of foreign currency derivative contracts.

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The average forward price on the group of price risk forward or futures contracts, such as gas futures contracts.

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The average strike price on the group of price risk option contracts such as put options or call options.

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Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 205G

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44C
-Subparagraph a
-Clause 1

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Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair value as of the balance sheet date of the assets less the liabilities of a derivative or group of derivatives.

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Net increase (decrease) in the fair value of the derivative or group of derivatives included in earnings.

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Increase in the fair value of the derivative or group of derivatives included in earnings in the period.

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The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

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The amount of gain recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

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The amount of loss recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

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Decrease in the fair value of the derivative or group of derivatives included in earnings in the period.

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Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44A, 44B

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 12-16, 44A, 44B

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Increase in the fair value of the embedded derivative or group of embedded derivatives included in earnings in the period.

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Decrease in the fair value of the embedded derivative or group of embedded derivatives included in earnings in the period.

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The cash inflow associated with the sale of equity securities classified as available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 18

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 15

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 16
-Subparagraph b

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The increases (decreases) in the market value of derivative instruments, including options, swaps, futures, and forward contracts, which were included in earnings in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28

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Derivative Financial Instruments and Fair Value of Financial Instruments (Details Textual)	3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended			1 Months Ended	3 Months Ended		6 Months Ended				6 Months Ended				3 Months Ended	6 Months Ended			6 Months Ended
	Jun. 30, 2011 USD ($)	Jun. 30, 2010 USD ($)	Jun. 30, 2011 USD ($)	Jun. 30, 2010 USD ($)	Dec. 31, 2010 USD ($)	Jun. 30, 2011 Mexican peso forward purchase contracts [Member] Forward foreign exchange contracts [Member] USD ($)	Jun. 30, 2010 Mexican peso forward purchase contracts [Member] Forward foreign exchange contracts [Member] USD ($)	Jun. 30, 2011 Mexican peso forward purchase contracts [Member] Forward foreign exchange contracts [Member] USD ($)	Jun. 30, 2010 Mexican peso forward purchase contracts [Member] Forward foreign exchange contracts [Member] USD ($)	Jun. 30, 2011 Mexican peso forward purchase contracts [Member] Forward foreign exchange contracts [Member] MXN	Sep. 30, 2010 Franco-Nevada warrant [Member] USD ($)	Jun. 30, 2011 Franco-Nevada warrant [Member] USD ($)	Jun. 30, 2010 Franco-Nevada warrant [Member] USD ($)	Jun. 30, 2011 Franco-Nevada warrant [Member] USD ($)	Jun. 30, 2010 Franco-Nevada warrant [Member] USD ($)	Dec. 31, 2010 Franco-Nevada warrant [Member] USD ($)	Jun. 30, 2011 Gold call options sold [Member]	Jun. 30, 2011 Gold forward contracts [Member] USD ($)	Jun. 30, 2011 Palmarejo gold production royalty [Member] XAU	Dec. 31, 2010 Palmarejo gold production royalty [Member] USD ($)	Jan. 21, 2009 Palmarejo gold production royalty [Member]	Jun. 30, 2011 Cerro Bayo Mine [Member] Silver [Member] USD ($)	Jun. 30, 2011 Cerro Bayo Mine [Member] Silver [Member] USD ($)	Dec. 31, 2010 Cerro Bayo Mine [Member] Silver [Member] USD ($)	Jun. 30, 2011 Commodity [Member] USD ($)	Jun. 30, 2011 Cerro Bayo Mine [Member]
Additional Derivative Financial Instruments and Fair Value of Financial Instruments (Textuals) [Abstract]
Payment made for gold on the end of royalty obligation																					400000
Total gold remain outstanding																			288,836
Fair value liability of the embedded derivative												164,900,000		164,900,000		162,000,000
Contingent options on warrants to acquire common shares														316,436
Company recognized Mark to Market loss												4,000,000	30,000,000	2,900,000
Company recognized Mark to Market Gain															1,000,000
Net proceeds from sale of shares											10,000,000
Realized losses on settlement of the liabilities												9,700,000	3,700,000	17,200,000	6,800,000
Foreign exchange contracts of MXP						32,400,000		32,400,000
Weighted average exchange rate of MXP										12.08
Fair value of foreign exchange contracts						300,000		300,000
Mark-to-market gains and losses on forward foreign exchange contract						(700,000)	(1,600,000)	300,000	(1,200,000)
Mark-to-market Realized gains on forward foreign exchange contract						900,000	500,000	1,100,000	500,000
Gold leased from MIC	0		0		10,000
Notional ounces																	23,750
Realized gains																		500,000
Derivative fair value of derivative liability																									13,100,000
Average strike price	1,737.68		1,737.68
Unrealized gain	2,400,000	800,000	1,700,000	1,600,000
Received silver in connection with sales of asset																										12,500
Company recognized mark to market loss																						400,000
Company recognized mark to market gain																							500,000
Fair value of the contract																				0		4,300,000	4,300,000	3,900,000
Derivative Financial Instruments and Fair Value of Financial Instruments (Textual) [Abstract]
Fair value of gold and silver including embedded derivative	23,600,000		23,600,000		37,400,000
Fixed Price of Forward gold contract					1,380
Outstanding call options of gold	220,000		220,000
Weighted average Strike price of call options written	$1858.41 per ounce if the market price of gold exceeds the strike price		$1858.41 per ounce if the market price of gold exceeds the strike price
Outstanding put options of gold	220,000		220,000
Weighted average strike price of put option	$943.09 per ounce if the market price of gold fall below the strike price		$943.09 per ounce if the market price of gold fall below the strike price
Contract expiration date	5 years		5 years
Outstanding provisionally priced sales	24,800,000		24,800,000		35,700,000
Outstanding provisionally priced sales consists of silver	341,058		341,058		647,711
Outstanding provisionally priced sales consists of Gold	7,471		7,471		12,758
Realized gain (loss)						$ 900,000	$ 500,000	$ 1,100,000	$ 500,000