Segment Reporting (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Financial information relating to reporting segments
Revenue		$ 662,497		$ 639,236		$ 632,526
Royalty Revenue		3,280		6,850		3,216
Revenues		665,777		646,086		635,742
Costs applicable to sales	[1]	409,541		479,654		477,945
Amortization		123,161		143,751		162,436
Exploration		12,930		11,647		21,740
Write-downs		4,446		313,337		1,472,721
Other operating expenses		46,595		50,627		66,882
Gains (Losses) on Extinguishment of Debt		(21,365)		15,916		0
Fair value adjustments, net		(11,581)		5,202		3,618
Interest expense, net		(36,920)		(45,703)		(47,546)
Other, net		1,875		(15,931)		(5,218)
Income and mining tax benefit (expense)		54,239		26,263		428,254
Net income (loss)		55,352		(367,183)		(1,186,874)
Assets, Net		1,122,038		1,103,310	[2]	1,075,259
Capital expenditures		101,013		95,193		64,244
Palmarejo [Member]
Financial information relating to reporting segments
Revenue		141,273		169,133		244,003
Royalty Revenue		0		0		0
Revenues		141,273		169,133		244,003
Costs applicable to sales		80,820	[3]	138,476	[4]	187,276
Amortization		36,599		32,423		69,431
Exploration		5,063		4,533		6,671
Write-downs		0		224,507		784,038
Other operating expenses		1,213		1,293		620
Gains (Losses) on Extinguishment of Debt		0		0
Fair value adjustments, net		(5,814)		3,160		(1,847)
Interest expense, net		(1,187)		4,269		9,320
Other, net		(12,125)		(10,968)		131
Income and mining tax benefit (expense)		45,085		(37,597)		(251,840)
Net income (loss)		43,537		(206,579)		(563,229)
Assets, Net		436,642	[5]	406,648	[2]	332,369
Capital expenditures		35,810		35,991		26,084
Rochester [Member]
Financial information relating to reporting segments
Revenue		139,945		143,930		123,768
Royalty Revenue		0		0		0
Revenues		139,945		143,930		123,768
Costs applicable to sales		89,726	[3]	103,994	[4]	91,462
Amortization		21,838		23,906		20,790
Exploration		841		1,324		2,636
Write-downs		0		0		0
Other operating expenses		2,801		2,948		2,813
Gains (Losses) on Extinguishment of Debt		0		0
Fair value adjustments, net		(4,133)		818		3,653
Interest expense, net		(664)		748		679
Other, net		(3,859)		(13)		105
Income and mining tax benefit (expense)		(2,785)		1,497		2,224
Net income (loss)		13,298		10,318		6,922
Assets, Net		219,009	[5]	190,714	[2]	196,765
Capital expenditures		16,446		25,330		11,898
Kensington [Member]
Financial information relating to reporting segments
Revenue		146,593		148,710		136,960
Royalty Revenue		0		0		0
Revenues		146,593		148,710		136,960
Costs applicable to sales		96,731	[3]	105,640	[4]	105,342
Amortization		34,787		42,240		43,619
Exploration		3,487		2,596		8,005
Write-downs		0		0		107,832
Other operating expenses		1,038		1,301		796
Gains (Losses) on Extinguishment of Debt		0		0
Fair value adjustments, net		0		0		0
Interest expense, net		(128)		218		214
Other, net		(25)		7		(22)
Income and mining tax benefit (expense)		0		0		0
Net income (loss)		10,397		(3,278)		(128,870)
Assets, Net		199,232	[5]	197,873	[2]	215,973
Capital expenditures		36,826		23,834		16,220
Wharf [Member]
Financial information relating to reporting segments
Revenue		136,678		84,052
Royalty Revenue		0		0
Revenues		136,678		84,052
Costs applicable to sales		66,379	[3]	52,197	[4]
Amortization		20,621		16,378
Exploration		2		134
Write-downs		0		0
Other operating expenses		2,238		1,717
Gains (Losses) on Extinguishment of Debt		0		0
Fair value adjustments, net		0		0
Interest expense, net		(69)		0
Other, net		17		143
Income and mining tax benefit (expense)		(4,293)		857
Net income (loss)		43,093		12,912
Assets, Net		105,901	[5]	113,305	[2]
Capital expenditures		4,812		3,211
San Bartolome [Member]
Financial information relating to reporting segments
Revenue		93,880		84,679		117,749
Royalty Revenue		0		0		0
Revenues		93,880		84,679		117,749
Costs applicable to sales		74,166	[3]	75,827	[4]	89,659
Amortization		6,633		17,798		19,423
Exploration		0		126		120
Write-downs		0		66,712		118,754
Other operating expenses		2,909		1,787		(251)
Gains (Losses) on Extinguishment of Debt		0		0
Fair value adjustments, net		0		0		0
Interest expense, net		(24)		725		52
Other, net		1,590		1,557		2,461
Income and mining tax benefit (expense)		6,252		5,154		(18,114)
Net income (loss)		17,990		(81,893)		(89,433)
Assets, Net		76,317	[5]	91,141	[2]	188,616
Capital expenditures		6,631		6,220		7,937
Coeur Capital [Member]
Financial information relating to reporting segments
Revenue		4,128		8,732		10,046
Royalty Revenue		3,280		6,850		3,216
Revenues		7,408		15,582		13,262
Costs applicable to sales		1,719	[3]	3,520	[4]	4,206
Amortization		1,117		9,010		7,015
Exploration		1,797		(124)		515
Write-downs		4,446		22,118		6,202
Other operating expenses		226		33		938
Gains (Losses) on Extinguishment of Debt		0		0
Fair value adjustments, net		0		0		0
Interest expense, net		(34)		0		1
Other, net		6,014		(3,182)		(7,141)
Income and mining tax benefit (expense)		(2,504)		(5,542)		(2,067)
Net income (loss)		1,579		(16,615)		(10,689)
Assets, Net		9,285	[5]	27,892	[2]	59,848
Capital expenditures		0		0		0
Other Mining Properties [Member]
Financial information relating to reporting segments
Revenue		0		0		0
Royalty Revenue		0		0		0
Revenues		0		0		0
Costs applicable to sales		0	[3]	0	[4]	0
Amortization		1,566		1,996		2,158
Exploration		1,740		3,058		3,793
Write-downs		0		0		455,895
Other operating expenses		36,170		41,548		61,966
Gains (Losses) on Extinguishment of Debt		(21,365)		15,916
Fair value adjustments, net		(1,634)		1,224		1,812
Interest expense, net		(34,814)		39,743		37,280
Other, net		10,263		(3,475)		(752)
Income and mining tax benefit (expense)		12,484		9,368		(158,457)
Net income (loss)		(74,542)		(82,048)		(401,575)
Assets, Net		75,652	[5]	75,737	[2]	81,688
Capital expenditures		$ 488		$ 607		$ 2,105

[1] Excludes amortization.

[2] Segment assets include receivables, prepaids, inventories, property, plant and equipment, and mineral interests

[3] Excludes amortization

[4] Excludes amortization

[5] Segment assets include receivables, prepaids, inventories, property, plant and equipment, and mineral interest