Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended										12 Months Ended
	Dec. 31, 2013		Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012		Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Financial information relating to reporting segments
Sales of metal	$ 168,847		$ 200,825	$ 204,525	$ 171,797	$ 205,929		$ 230,593	$ 254,406	$ 204,564	$ 745,994		$ 895,492		$ 1,021,200
Production costs applicable to sales	(100,227)		(131,728)	(142,924)	(88,784)	(106,473)		(124,365)	(131,182)	(92,542)	(463,663)		(454,562)		(419,547)
Amortization	(63,916)		(60,874)	(57,653)	(50,436)	(52,397)		(52,844)	(61,024)	(52,592)	(232,879)		(218,857)		(224,500)
Gross profit (loss)											49,452		222,073		377,153
Exploration	5,440		3,305	6,774	6,841	6,441		6,957	6,305	6,567	22,360		26,270		19,128
Write-downs											772,993		5,825		0
Other operating expenses	789,094		20,195	48,131	14,831	5,883		11,836	13,680	8,664
OPERATING INCOME											(845,159)		155,740		307,205
Interest and other income											13,323		15,041		(6,610)
Interest expense, net											(41,303)		(26,169)		(34,774)
Loss on debt extinguishments											0		(1,036)		(5,526)
Fair value adjustments, net											82,768		(23,487)		(52,050)
Income tax benefit (expense)											158,116		(70,807)		(114,746)
Net income	(581,528)		(46,265)	(35,040)	12,270	37,550		(15,821)	22,973	3,975	(650,563)		48,677		93,499
Segment assets						2,974,056							2,974,056		2,963,130
Capital expenditures	28,059		32,726	27,201	12,827	21,784		29,972	32,238	31,647	100,813		115,641		119,988
Palmarejo [Member]
Financial information relating to reporting segments
Production costs applicable to sales											(188,572)		(197,478)		(186,201)
Amortization											(134,240)		(146,595)		(159,264)
Gross profit (loss)											1,228		98,025		167,632
Exploration											7,161		7,575		6,863
Write-downs											642,094		0
Other operating expenses											0		11		949
OPERATING INCOME											(648,027)		90,439		159,820
Interest and other income											906		4,017		(9,099)
Interest expense, net											(15,123)		(18,938)		(23,453)
Loss on debt extinguishments													0		0
Fair value adjustments, net											76,218		(31,054)		(40,046)
Income tax benefit (expense)											107,748		(18,066)		(28,023)
Net income											(478,278)		26,398		59,199
Segment assets	1,164,852	[1]				1,905,269	[1]				1,164,852	[1]	1,905,269	[1]	2,029,769	[1]
Capital expenditures											33,730	[1]	38,456	[1]	36,976	[1]
San Bartolome [Member]
Financial information relating to reporting segments
Production costs applicable to sales											(86,827)		(71,428)		(79,679)
Amortization											(19,565)		(16,709)		(22,410)
Gross profit (loss)											35,329		89,868		165,413
Exploration											111		159		248
Write-downs											0		0
Other operating expenses											5,743		80		342
OPERATING INCOME											29,475		89,629		164,823
Interest and other income											2,582		9,719		156
Interest expense, net											(74)		(72)		(45)
Loss on debt extinguishments													0		0
Fair value adjustments, net											0		0		0
Income tax benefit (expense)											(10,938)		(44,632)		(59,867)
Net income											21,045		54,644		105,067
Segment assets	289,272	[1]				302,922	[1]				289,272	[1]	302,922	[1]	276,423	[1]
Capital expenditures											11,568	[1]	25,672	[1]	17,731	[1]
Kensington [Member]
Financial information relating to reporting segments
Sales of metal											148,769		110,987		151,186
Production costs applicable to sales											(104,575)		(87,089)		(101,672)
Amortization											(63,216)		(41,645)		(35,839)
Gross profit (loss)											(19,022)		(17,747)		13,675
Exploration											4,199		3,283		1,102
Write-downs											130,694		0
Other operating expenses											269		74		317
OPERATING INCOME											(154,184)		(21,104)		12,256
Interest and other income											(187)		(77)		4
Interest expense, net											(424)		(2,972)		(4,889)
Loss on debt extinguishments													(1,036)		0
Fair value adjustments, net											7,480		4,089		(8,438)
Income tax benefit (expense)											(1)		0		(31)
Net income											(147,316)		(21,100)		(1,098)
Segment assets	343,144	[1]				508,658	[1]				343,144	[1]	508,658	[1]	507,891	[1]
Capital expenditures											21,404	[1]	36,994	[1]	34,013	[1]
Rochester [Member]
Financial information relating to reporting segments
Sales of metal											119,254		132,392		57,331
Production costs applicable to sales											(77,869)		(72,061)		(27,848)
Amortization											(10,571)		(8,065)		(2,824)
Gross profit (loss)											30,814		52,266		26,659
Exploration											2,653		3,591		1,989
Write-downs											0		0
Other operating expenses											34,584		1,401		19,931
OPERATING INCOME											(6,423)		47,274		4,739
Interest and other income											(318)		358		57
Interest expense, net											(20)		(26)		(21)
Loss on debt extinguishments													0		0
Fair value adjustments, net											416		0		0
Income tax benefit (expense)											(2,332)		(2,195)		(409)
Net income											(8,677)		45,411		4,366
Segment assets	176,789	[1]				104,373	[1]				176,789	[1]	104,373	[1]	76,852	[1]
Capital expenditures											29,406	[1]	11,794	[1]	27,217	[1]
Martha [Member]
Financial information relating to reporting segments
Production costs applicable to sales											0		(17,682)		(15,513)
Amortization											(438)		(692)		(556)
Gross profit (loss)											(1,099)		(5,212)		(2,722)
Exploration											4,485		8,648		6,367
Write-downs											0		5,825
Other operating expenses											2,650		2,108		156
OPERATING INCOME											(8,234)		(21,793)		(9,245)
Interest and other income											865		(1,153)		(544)
Interest expense, net											(1)		(3)		(458)
Loss on debt extinguishments													0		0
Fair value adjustments, net											0		0		0
Income tax benefit (expense)											(137)		976		(1,219)
Net income											(7,507)		(21,973)		(11,466)
Segment assets	6,168	[1]				9,813	[1]				6,168	[1]	9,813	[1]	19,717	[1]
Capital expenditures											10	[1]	1,193	[1]	3,426	[1]
La Preciosa [Member]
Financial information relating to reporting segments
Sales of metal											0
Production costs applicable to sales											0
Amortization											(24)
Gross profit (loss)											(24)
Exploration											80
Write-downs											0
Other operating expenses											3,237
OPERATING INCOME											(3,341)
Interest and other income											15
Interest expense, net											0
Fair value adjustments, net											0
Income tax benefit (expense)											(20,856)
Net income											(24,182)
Segment assets	410,335	[1]									410,335	[1]
Capital expenditures											1,122	[1]
Coeur Capital [Member]
Financial information relating to reporting segments
Sales of metal											12,871		18,848		18,737
Production costs applicable to sales											(5,818)		(8,824)		(8,634)
Amortization											(3,755)		(4,632)		(3,155)
Gross profit (loss)											3,298		5,392		6,948
Exploration											2,069		1,056		662
Write-downs											0		0
Other operating expenses											1,397		(736)		(1)
OPERATING INCOME											(168)		5,072		6,287
Interest and other income											(19,474)		(77)		1,108
Interest expense, net											0		0		0
Loss on debt extinguishments													0		0
Fair value adjustments, net											0		0		0
Income tax benefit (expense)											2,179		(327)		0
Net income											(17,463)		4,668		7,395
Segment assets	62,678	[1]				32,656	[1]				62,678	[1]	32,656	[1]	36,349	[1]
Capital expenditures											0		0		59
Other Mining Properties [Member]
Financial information relating to reporting segments
Sales of metal											0		0		0
Production costs applicable to sales											(2)		0		0
Amortization											(1,070)		(519)		(452)
Gross profit (loss)											(1,072)		(519)		(452)
Exploration											1,602		1,958		1,897
Write-downs											205		0
Other operating expenses											51,378		31,300		29,126
OPERATING INCOME											(54,257)		(33,777)		(31,475)
Interest and other income											10,626		1,649		1,708
Interest expense, net											(25,661)		(4,158)		(5,908)
Loss on debt extinguishments													0		(5,526)
Fair value adjustments, net											(1,346)		3,478		(3,566)
Income tax benefit (expense)											82,453		(6,563)		(25,197)
Net income											11,815		(39,371)		(69,964)
Segment assets	105,581					110,365					105,581		110,365		16,129
Capital expenditures											3,573		1,532		566
Total [Member]
Financial information relating to reporting segments
Sales of metal											745,994		895,492		1,021,200
Production costs applicable to sales											463,663		(454,562)		(419,547)
Amortization											232,879		(218,857)		(224,500)
Gross profit (loss)											49,452		222,073		377,153
Exploration											22,360		26,270		19,128
Write-downs											772,993		5,825
Other operating expenses											99,258		34,238		50,820
OPERATING INCOME											(845,159)		155,740		307,205
Interest and other income											(4,985)		14,436		(6,610)
Interest expense, net											41,303		(26,169)		(34,774)
Loss on debt extinguishments													(1,036)		(5,526)
Fair value adjustments, net											82,768		(23,487)		(52,050)
Income tax benefit (expense)											(158,116)		(70,807)		(114,746)
Net income											(650,563)		48,677		93,499
Segment assets	2,558,819	[1]				2,974,056	[1]				2,558,819	[1]	2,974,056	[1]	2,963,130	[1]
Capital expenditures											100,813		115,641		119,988
Bolivia [Member]
Financial information relating to reporting segments
Sales of metal													178,005		267,502
Bolivia [Member] | San Bartolome [Member]
Financial information relating to reporting segments
Sales of metal											141,721		178,005		267,502
Argentina [Member]
Financial information relating to reporting segments
Sales of metal													13,162		13,347
Argentina [Member] | Martha [Member]
Financial information relating to reporting segments
Sales of metal											(661)		13,162		13,347
Mexico [Member]
Financial information relating to reporting segments
Sales of metal													442,098		513,097
Mexico [Member] | Palmarejo [Member]
Financial information relating to reporting segments
Sales of metal											$ 324,040		$ 442,098		$ 513,097

[1] (1) Segment assets consist of receivables, prepaids, inventories, property, plant and equipment, and mining properties