Derivative Financial Instruments (Details Textual)	3 Months Ended				3 Months Ended					3 Months Ended					3 Months Ended																	3 Months Ended
	Mar. 31, 2014 USD ($)	Mar. 31, 2013	Dec. 31, 2013 oz	Mar. 31, 2014 Put Option [Member]	Mar. 31, 2014 Franco-Nevada warrant [Member] USD ($)	Mar. 31, 2013 Franco-Nevada warrant [Member] USD ($)	Dec. 31, 2013 Franco-Nevada warrant [Member] USD ($)	Mar. 31, 2014 Palmarejo gold production royalty [Member] oz	Jan. 21, 2009 Palmarejo gold production royalty [Member]	Mar. 31, 2014 Forward foreign exchange contracts [Member] Mexican peso forward purchase contracts [Member] USD ($)	Mar. 31, 2013 Forward foreign exchange contracts [Member] Mexican peso forward purchase contracts [Member] USD ($)	Dec. 31, 2013 Forward foreign exchange contracts [Member] Mexican peso forward purchase contracts [Member] USD ($)	Dec. 31, 2013 Forward foreign exchange contracts [Member] Mexican peso forward purchase contracts [Member] MXN	Mar. 31, 2014 Gold Put Purchase and Call Sold Options Net [Member] USD ($)	Mar. 31, 2014 Commodity [Member] USD ($)	Mar. 31, 2013 Commodity [Member] USD ($)	Dec. 31, 2013 Kensington Term Facility [Member] Gold Put Option [Member] Put Option [Member]	Dec. 31, 2013 Kensington Term Facility [Member] Put Option on Silver [Member] Put Option [Member]	Mar. 31, 2014 Maximum [Member] Palmarejo gold production royalty [Member] oz	Mar. 31, 2014 Derivative Instruments Settle in Year One [Member] Gold call options sold [Member] USD ($)	Mar. 31, 2014 Derivative Instruments Settle in Year One [Member] Silver concentrate sales agreements [Member] USD ($) oz	Dec. 31, 2013 Derivative Instruments Settle in Year One [Member] Silver concentrate sales agreements [Member] oz	Mar. 31, 2014 Derivative Instruments Settle in Year One [Member] Gold concentrates sales agreements [Member] USD ($) oz	Dec. 31, 2013 Derivative Instruments Settle in Year One [Member] Gold concentrates sales agreements [Member]	Mar. 31, 2014 Derivative Instruments Settle in Year One [Member] Mexico Peso Put Options [Member] oz	Mar. 31, 2014 Derivative Instruments Settle in Year One [Member] Gold put options purchased [Member] USD ($) oz	Mar. 31, 2014 Derivative Instruments Settle in Year One [Member] Silver put options purchased [Member] USD ($) oz	Mar. 31, 2014 Derivative Instruments Settle in Year One [Member] Mexico Peso Call Options [Member] Mexican peso forward purchase contracts [Member] USD ($)	Mar. 31, 2014 Derivative Instruments Settle in Year One [Member] Mexico Peso Call Options [Member] Mexican peso forward purchase contracts [Member] MXN	Mar. 31, 2014 Derivative Instruments Settle in Year One [Member] Mexico Peso Put Options [Member] USD ($)	Mar. 31, 2014 Derivative Instruments Settle in Year One [Member] Mexico Peso Put Options [Member] MXN	Mar. 31, 2014 Derivative Instruments Settle in Year One [Member] Kensington Term Facility [Member] Gold put options purchased [Member] Put Option [Member] USD ($)	Mar. 31, 2014 Derivative Instruments Settle in Year One [Member] Kensington Term Facility [Member] Silver put options purchased [Member] Put Option [Member] USD ($)	Mar. 31, 2014 Derivative Instruments Settle in Year Two [Member] Gold call options sold [Member]	Mar. 31, 2014 Derivative Instruments Settle in Year Two [Member] Silver concentrate sales agreements [Member] USD ($) oz	Mar. 31, 2014 Derivative Instruments Settle in Year Two [Member] Gold concentrates sales agreements [Member] USD ($) oz	Mar. 31, 2014 Derivative Instruments Settle in Year Two [Member] Mexico Peso Put Options [Member] MXN oz	Mar. 31, 2014 Derivative Instruments Settle in Year Two [Member] Gold put options purchased [Member] USD ($) oz	Mar. 31, 2014 Derivative Instruments Settle in Year Two [Member] Silver put options purchased [Member] USD ($) oz	Mar. 31, 2014 Derivative Instruments Settle in Year Two [Member] Silver Put Options Sold [Member] USD ($)	Mar. 31, 2014 Prepaid Expenses and Other Current Assets [Member] USD ($)	Dec. 31, 2013 Prepaid Expenses and Other Current Assets [Member] USD ($)	Mar. 31, 2014 Prepaid Expenses and Other Current Assets [Member] Palmarejo gold production royalty [Member] USD ($)	Dec. 31, 2013 Prepaid Expenses and Other Current Assets [Member] Palmarejo gold production royalty [Member] USD ($)	Mar. 31, 2014 Prepaid Expenses and Other Current Assets [Member] Forward foreign exchange contracts [Member] USD ($)	Dec. 31, 2013 Prepaid Expenses and Other Current Assets [Member] Forward foreign exchange contracts [Member] USD ($)	Mar. 31, 2014 Prepaid Expenses and Other Current Assets [Member] Gold Put Purchase and Call Sold Options Net [Member] USD ($)	Dec. 31, 2013 Prepaid Expenses and Other Current Assets [Member] Gold Put Purchase and Call Sold Options Net [Member] USD ($)
Derivative [Line Items]
Weighted Average Strike Price of Put Options																	1,150	17.00																1,050						16.00
Fair Value, Asian Put Options																																															$ 800,000
Additional Derivative Financial Instruments and Fair Value of Financial Instruments (Textual) [Abstract]
Life of Mine Production, Percentage									50.00%
Payment made for gold on the end of royalty obligation								4,167
Royalty Guarantees, Commitments, Ounces of Gold																			400,000
Total gold remain outstanding								124,103
Fair Value Assumptions, Risk Free Interest Rate	6.08%	4.20%
Fair value liability of the embedded derivative					44,400,000		40,300,000
Company recognized Mark to Market loss					(4,000,000)	23,500,000
Percentage of Gold Production								50.00%
Derivative Average Gold Price in Excess of Minimum Contractual Deduction Rate	408
Annual Inflation Compounding Adjustment								1.00%
Realized losses					6,200,000	9,100,000
Foreign exchange contracts of MXP												12,000,000																35,000,000		35,000,000
Weighted average exchange rate											12.21
Weighted average exchange rate of MXP													14.80																12.56		14.98						0
Fair value of foreign exchange contracts										100,000		900
Derivative, Average Exchange Rate Floor												12.60	12.60
Derivative, Notional Amount												45,000,000								(52,500,000)	3,041,000		24,204,000			60,000,000	45,000,000								0	0		0	0	(40,000,000)
Mark-to-market gains and (losses) on forward foreign exchange contract										(900,000)	600,000				300,000	(500,000)
Derivative Liability, Fair Value														226,000
Weighted Average Call Feature of Each Collar																																	18.00
Weighted Average Put Feature of Each Collar																																1,200
Contract expiration date				3 years
Notional ounces																									524,300,000	50,000	2,500,000								0	0	0	0	0
Average strike price																																						0	0
Unrealized gain (loss)										1,000,000	700,000				(1,500,000)	4,800,000
Fair value of the contract														$ 992,000																											$ 1,592,000	$ 184,000			$ 67,000	$ 38,000	$ 992,000	$ 135,000
Derivative Financial Instruments and Fair Value of Financial Instruments (Textual) [Abstract]
Outstanding provisionally priced sales consists of silver																					148,594	200,000
Outstanding provisionally priced sales consists of Gold			30,780																				18,471
Derivative Average Price																					20.47	20.98	1,310	1,259											0	0