Derivative Average Price.

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- Definition

Derivative instruments Settlement.

+ References

No definition available.

+ Details

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- Definition

Outstanding provisionally priced sales consists of Gold.

+ References

No definition available.

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- Definition

Outstanding provisionally priced sales consists of silver.

+ References

No definition available.

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- Definition

Price per ounce under agreement

+ References

No definition available.

+ Details

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- Definition

Weighted Average Strike Price Of Put Options.

+ References

No definition available.

+ Details

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- Definition

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

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

+ Details

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

+ Details

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- Definition

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

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5618551-113959

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Derivative Financial Instruments (Details) - Derivative Contract Type [Domain]	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($) oz $ / oz $ / XAG	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) oz $ / oz $ / XAG	Jun. 30, 2014 USD ($)	Dec. 31, 2014 $ / XAU $ / XAG
Derivative [Line Items]
Gain (loss) on derivative instruments	$ 2,754,000	$ (8,282,000)	$ (2,130,000)	$ (19,717,000)
Derivative instruments Settlement
Price per ounce under agreement	412		412
Palmarejo gold production royalty [Member] \| 2013 [Member]
Derivative instruments Settlement
Derivative, notional amount	22,220,000		22,220,000
Price per ounce under agreement	$ 762		$ 762
Notional ounces \| oz	29,169		29,169
Palmarejo gold production royalty [Member] \| 2014 [Member]
Derivative instruments Settlement
Derivative, notional amount	$ 23,374,000		$ 23,374,000
Price per ounce under agreement	$ 760		$ 760
Notional ounces \| oz	30,744		30,744
Palmarejo gold production royalty [Member] \| Thereafter [Member]
Derivative instruments Settlement
Derivative, notional amount	$ 0		$ 0
Price per ounce under agreement	$ 0		$ 0
Notional ounces \| oz	0		0
Silver concentrate sales agreements [Member] \| 2013 [Member]
Derivative instruments Settlement
Derivative, notional amount	$ 12,505,000		$ 12,505,000
Derivative average price \| $ / oz	15.84		15.84
Outstanding Provisionally Priced Sales Consists of Silver \| oz	789,479		789,479
Silver concentrate sales agreements [Member] \| 2014 [Member]
Derivative instruments Settlement
Derivative, notional amount	$ 0		$ 0
Notional ounces \| oz	0		0
Derivative average price \| $ / oz	0		0
Silver concentrate sales agreements [Member] \| Thereafter [Member]
Derivative instruments Settlement
Derivative, notional amount	$ 0		$ 0
Notional ounces \| oz	0		0
Derivative average price \| $ / oz	0		0
Gold concentrates sales agreements [Member] \| 2013 [Member]
Derivative instruments Settlement
Derivative, notional amount	$ 52,776,000		$ 52,776,000
Derivative average price \| $ / oz	1,193		1,193
Outstanding Provisionally Priced Sales Consists of Gold \| oz	44,238		44,238
Gold concentrates sales agreements [Member] \| 2014 [Member]
Derivative instruments Settlement
Derivative, notional amount	$ 0		$ 0
Notional ounces \| oz	0		0
Derivative average price \| $ / oz	0		0
Gold concentrates sales agreements [Member] \| Thereafter [Member]
Derivative instruments Settlement
Derivative, notional amount	$ 0		$ 0
Notional ounces \| oz	0		0
Derivative average price \| $ / oz	0		0
Gold Put Option [Member] \| 2013 [Member]
Derivative instruments Settlement
Weighted Average Strike Price of Put Options \| $ / XAU					1,050
Silver put options purchased [Member] \| 2013 [Member]
Derivative instruments Settlement
Derivative, notional amount	$ 15,300,000		$ 15,300,000
Silver put options purchased [Member] \| 2014 [Member]
Derivative instruments Settlement
Derivative, notional amount	$ 0		$ 0
Notional ounces \| oz	0		0
Average strike price \| $ / oz	0.00		0.00
Silver put options purchased [Member] \| Thereafter [Member]
Derivative instruments Settlement
Derivative, notional amount	$ 0		$ 0
Notional ounces \| oz	0		0
Average strike price \| $ / oz	0		0
Silver Put Options Sold [Member] \| 2013 [Member]
Derivative instruments Settlement
Derivative, notional amount	$ 13,950,000		$ 13,950,000
Weighted Average Strike Price of Put Options \| $ / XAG	15.50		15.50
Notional ounces \| oz	900,000		900,000
Silver Put Options Sold [Member] \| 2014 [Member]
Derivative instruments Settlement
Derivative, notional amount	$ 0		$ 0
Weighted Average Strike Price of Put Options \| $ / XAG					16.00
Average strike price \| $ / oz	0.00		0.00
Silver Put Options Sold [Member] \| Thereafter [Member]
Derivative instruments Settlement
Derivative, notional amount	$ 0		$ 0
Average strike price \| $ / oz	0		0
Line of Credit [Member] \| Put Option [Member] \| Gold put options purchased [Member] \| 2013 [Member]
Derivative instruments Settlement
Weighted Average Strike Price of Put Options \| $ / XAU					1,200
Line of Credit [Member] \| Put Option [Member] \| Silver put options purchased [Member] \| 2013 [Member]
Derivative instruments Settlement
Weighted Average Strike Price of Put Options \| $ / XAG	17.00		17.00		18.00