Derivative Average Price.

No definition available.

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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.

+ Details

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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

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)	3 Months Ended		9 Months Ended
Derivative Financial Instruments (Details)	Sep. 30, 2015 USD ($) oz $ / oz	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) oz $ / oz	Sep. 30, 2014 USD ($)	Dec. 31, 2014 $ / XAU $ / XAG
Derivative [Line Items]
Gain (loss) on derivative instruments	$ 5,786,000	$ 16,105,000	$ 3,657,000	$ (3,611,000)
Derivative instruments Settlement
Price per ounce under agreement	412		412
Palmarejo gold production royalty [Member] \| 2013 [Member]
Derivative instruments Settlement
Derivative, notional amount	11,760,000		11,760,000
Price per ounce under agreement	$ 706		$ 706
Notional ounces \| oz	16,668		16,668
Palmarejo gold production royalty [Member] \| 2014 [Member]
Derivative instruments Settlement
Derivative, notional amount	$ 20,543,000		$ 20,543,000
Price per ounce under agreement	$ 700		$ 700
Notional ounces \| oz	29,328		29,328
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	$ 8,234,000		$ 8,234,000
Derivative average price \| $ / oz	14.65		14.65
Outstanding Provisionally Priced Sales Consists of Silver \| oz	562,063		562,063
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	$ 44,812,000		$ 44,812,000
Derivative average price \| $ / oz	1,147		1,147
Outstanding Provisionally Priced Sales Consists of Gold \| oz	39,069		39,069
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 Sold [Member] \| 2014 [Member]
Derivative instruments Settlement
Weighted Average Strike Price of Put Options \| $ / XAG					16.00
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					18.00