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Derivative Financial Instruments (Details) | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2014 USD ($) | Jun. 30, 2013 USD ($) | Jun. 30, 2014 USD ($) | Jun. 30, 2013 USD ($) | Jun. 30, 2014 Palmarejo gold production royalty [Member] 2013 [Member] USD ($) oz | Jun. 30, 2014 Palmarejo gold production royalty [Member] 2014 [Member] USD ($) oz | Jun. 30, 2014 Palmarejo gold production royalty [Member] 2015 [Member] USD ($) oz | Jun. 30, 2014 Palmarejo gold production royalty [Member] Thereafter [Member] USD ($) oz | Jun. 30, 2014 Mexico Peso Put Options [Member] 2014 [Member] USD ($) oz | Jun. 30, 2014 Mexico Peso Put Options [Member] 2014 [Member] MXN | Jun. 30, 2014 Mexico Peso Put Options [Member] 2015 [Member] USD ($) oz | Jun. 30, 2014 Mexico Peso Put Options [Member] 2015 [Member] MXN | Jun. 30, 2014 Mexico Peso Put Options [Member] Thereafter [Member] USD ($) oz | Jun. 30, 2014 Mexico Peso Put Options [Member] Thereafter [Member] MXN | Jun. 30, 2014 Mexico peso call options [Member] 2014 [Member] USD ($) oz | Jun. 30, 2014 Mexico peso call options [Member] 2014 [Member] MXN | Jun. 30, 2014 Mexico peso call options [Member] 2015 [Member] USD ($) oz | Jun. 30, 2014 Mexico peso call options [Member] 2015 [Member] MXN | Jun. 30, 2014 Mexico peso call options [Member] Thereafter [Member] USD ($) oz | Jun. 30, 2014 Mexico peso call options [Member] Thereafter [Member] MXN | Jun. 30, 2014 Silver concentrate sales agreements [Member] 2013 [Member] USD ($) oz | Jun. 30, 2014 Silver concentrate sales agreements [Member] 2014 [Member] USD ($) oz | Jun. 30, 2014 Silver concentrate sales agreements [Member] 2015 [Member] USD ($) oz | Jun. 30, 2014 Silver concentrate sales agreements [Member] Thereafter [Member] USD ($) oz | Jun. 30, 2014 Gold concentrates sales agreements [Member] 2013 [Member] USD ($) oz | Jun. 30, 2014 Gold concentrates sales agreements [Member] 2014 [Member] USD ($) oz | Jun. 30, 2014 Gold concentrates sales agreements [Member] 2015 [Member] USD ($) oz | Jun. 30, 2014 Gold concentrates sales agreements [Member] Thereafter [Member] USD ($) oz | Jun. 30, 2014 Gold put options purchased [Member] 2013 [Member] USD ($) oz | Jun. 30, 2014 Gold put options purchased [Member] 2014 [Member] USD ($) oz | Jun. 30, 2014 Gold put options purchased [Member] 2015 [Member] USD ($) oz | Jun. 30, 2014 Gold put options purchased [Member] Thereafter [Member] USD ($) oz | Jun. 30, 2014 Gold Put Option [Member] 2013 [Member] USD ($) | Jun. 30, 2014 Gold Put Option [Member] 2014 [Member] USD ($) | Jun. 30, 2014 Gold Put Option [Member] 2015 [Member] USD ($) | Jun. 30, 2014 Gold Put Option [Member] Thereafter [Member] USD ($) | Jun. 30, 2014 Silver put options purchased [Member] 2013 [Member] USD ($) oz | Jun. 30, 2014 Silver put options purchased [Member] 2014 [Member] USD ($) oz | Jun. 30, 2014 Silver put options purchased [Member] 2015 [Member] USD ($) oz | Jun. 30, 2014 Silver put options purchased [Member] Thereafter [Member] USD ($) oz | Jun. 30, 2014 Silver Put Options Sold [Member] 2013 [Member] USD ($) | Jun. 30, 2014 Silver Put Options Sold [Member] 2014 [Member] USD ($) | Jun. 30, 2014 Silver Put Options Sold [Member] 2015 [Member] USD ($) | Jun. 30, 2014 Silver Put Options Sold [Member] Thereafter [Member] USD ($) | Dec. 31, 2013 Forward foreign exchange contracts [Member] Mexican peso forward purchase contracts [Member] USD ($) | Dec. 31, 2013 Forward foreign exchange contracts [Member] Mexican peso forward purchase contracts [Member] MXN | Jun. 30, 2014 Mexico peso call options [Member] 2013 [Member] USD ($) oz | Jun. 30, 2014 Mexico peso call options [Member] 2013 [Member] MXN | Jun. 30, 2014 Mexico Peso Put Options [Member] 2013 [Member] USD ($) oz | Jun. 30, 2014 Mexico Peso Put Options [Member] 2013 [Member] MXN | Jun. 30, 2014 Line of Credit [Member] Gold put options purchased [Member] 2013 [Member]
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Derivative Instruments, Net, Pretax | $ (8,282,000) | $ 66,754,000 | $ (19,717,000) | $ 84,550,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative instruments Settlement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, notional amount |  |  |  |  | 27,334,000 | 46,078,000 | 27,741,000 | 0 |  |  |  |  |  |  |  |  |  |  |  |  | 3,253,000 | 0 | 0 | 0 | 14,865,000 | 0 | 0 | 0 | 60,000,000 | 28,800,000 | 0 | 0 | 52,500,000 | 25,200,000 | 0 | 0 | 45,000,000 | 22,500,000 | 0 | 0 | 40,000,000 | 20,000,000 | 0 | 0 | 45,000,000 |  |  |  |  |  |
Derivative average gold price in excess of minimum contractual Deduction Rate | 408 |  | 408 |  | 913 | 919 | 920 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional ounces |  |  |  |  | 29,920 | 50,153 | 30,168 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  | 0 | 0 | 0 |  | 0 | 0 | 0 | 50,000 | 24,000 | 0 | 0 |  |  |  |  | 2,500,000 | 1,250,000 | 0 | 0 |  |  |  |  |  |  | 289,800,000 | 289,800,000 | 344,310,000 | 344,310,000 |
Foreign exchange contracts of MXP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,000,000 |  | 23,000,000 |  | 23,000,000 |  |
Fair value of foreign exchange contracts |  |  |  |  |  |  |  |  | $ 0 |  | $ 0 |  | $ 0 |  | $ 0 |  | $ 0 |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average rate (MXP/$) |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |  | 0 |  | 0 |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14.80 |  | 12.60 |  | 14.97 |
Derivative average price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 19.99 | 0 | 0 | 0 | 1,286 | 0 | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding Provisionally Priced Sales Consists of Gold |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11,559 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding Provisionally Priced Sales Consists of Silver |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 162,724 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average strike price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,200 | 0 | 0 | 1,050 | 1,050 | 0 | 0 | 18.00 | 18.00 | 0 | 0 | 16.00 | 16.00 | 0 | 0 |  |  |  |  |  |  | 1,200

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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=7476318&loc=SL5618551-113959 + Details
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