Segment Reporting (Details) - USD ($) $ in Thousands		3 Months Ended				6 Months Ended
		Jun. 30, 2016		Jun. 30, 2015		Jun. 30, 2016		Jun. 30, 2015		Dec. 31, 2015
Financial information relating to reporting segments
Metal Sales		$ 180,197		$ 164,505		$ 326,833		$ 315,460
Royalty Revenue		1,810		1,758		3,561		3,759
Revenue		182,007		166,263		330,394		319,219
Costs applicable to sales	[1]	100,465	[2]	119,097	[3]	202,020	[4]	234,160	[5]
Amortization		37,505		38,974		65,470		72,064
Exploration		2,233		3,579		3,963		7,845
Write-downs		0		0		4,446		0
Other operating expenses		11,764		10,718		24,244		26,316
Fair value adjustments, net		(3,579)		2,754		(12,274)		(2,130)
Interest expense, net		(10,875)		(10,734)		(21,995)		(21,499)
Other, net		(1,857)		(2,852)		(543)		(5,362)
Income and mining tax benefit (expense)		768		260		(1,338)		192
Net income (loss)		14,497		(16,677)		(5,899)		(49,965)
Assets, Net		1,113,959	[2]	1,485,125	[6]	1,113,959	[2]	1,485,125	[6]	$ 1,103,310
Capital expenditures		23,288		23,677		45,460		41,297
Palmarejo [Member]
Financial information relating to reporting segments
Metal Sales		48,272		38,875		78,085		78,269
Royalty Revenue		0		0		0		0
Revenue		48,272		38,875		78,085		78,269
Costs applicable to sales		22,865	[2]	30,112	[3]	43,903	[4]	64,603	[5]
Amortization		14,765		9,046		22,054		16,380
Exploration		562		1,837		1,363		2,960
Write-downs		0				0
Other operating expenses		278		324		593		638
Fair value adjustments, net		(840)		429		(5,704)		(1,116)
Interest expense, net		(425)		(844)		(1,159)		(2,184)
Other, net		(4,360)		(505)		(5,595)		(1,608)
Income and mining tax benefit (expense)		3,153		837		3,251		(534)
Net income (loss)		7,330		(2,527)		965		(11,754)
Assets, Net		427,938	[2]	657,448	[6]	427,938	[2]	657,448	[6]
Capital expenditures		8,863		10,723		17,678		19,907
Rochester [Member]
Financial information relating to reporting segments
Metal Sales		35,761		36,340		65,743		80,371
Royalty Revenue		0		0		0		0
Revenue		35,761		36,340		65,743		80,371
Costs applicable to sales		21,721	[2]	24,392	[3]	44,206	[4]	55,785	[5]
Amortization		5,437		5,387		10,750		12,230
Exploration		188		501		297		1,223
Write-downs		0				0
Other operating expenses		700		307		1,381		1,448
Fair value adjustments, net		(2,687)		1,137		(4,936)		(1,155)
Interest expense, net		(181)		(205)		(352)		(430)
Other, net		(3,860)		0		(3,857)		(40)
Income and mining tax benefit (expense)		8		(350)		(415)		(700)
Net income (loss)		995		6,335		(451)		7,360
Assets, Net		207,764	[2]	190,704	[6]	207,764	[2]	190,704	[6]
Capital expenditures		3,885		5,915		7,174		9,170
Kensington [Member]
Financial information relating to reporting segments
Metal Sales		36,469		42,468		72,212		86,506
Royalty Revenue		0		0		0		0
Revenue		36,469		42,468		72,212		86,506
Costs applicable to sales		22,611	[2]	27,452	[3]	47,029	[4]	56,871	[5]
Amortization		9,808		12,684		18,157		24,238
Exploration		977		432		930		2,094
Write-downs		0				0
Other operating expenses		257		526		509		761
Fair value adjustments, net		0		0		0		0
Interest expense, net		(34)		(57)		(77)		(120)
Other, net		1		(14)		(19)		(18)
Income and mining tax benefit (expense)		0		(994)		0		(994)
Net income (loss)		2,783		309		5,491		1,410
Assets, Net		196,403	[2]	197,241	[6]	196,403	[2]	197,241	[6]
Capital expenditures		7,536		4,714		15,626		8,859
Wharf [Member]
Financial information relating to reporting segments
Metal Sales		34,005		20,373		61,934		20,373
Royalty Revenue		0		0		0		0
Revenue		34,005		20,373		61,934		20,373
Costs applicable to sales		14,342	[2]	16,632	[3]	29,803	[4]	16,632	[5]
Amortization		5,128		3,491		9,179		3,491
Exploration		0		0		0		0
Write-downs		0				0
Other operating expenses		688		506		1,181		671
Fair value adjustments, net		0		0		0		0
Interest expense, net		(27)		0		(27)		0
Other, net		204		37		214		54
Income and mining tax benefit (expense)		(352)		(274)		(236)		412
Net income (loss)		13,672		(493)		21,722		45
Assets, Net		113,821	[2]	131,990	[6]	113,821	[2]	131,990	[6]
Capital expenditures		1,511		1,244		2,921		1,295
San Bartolome [Member]
Financial information relating to reporting segments
Metal Sales		25,185		23,366		46,463		44,913
Royalty Revenue		0		0		0		0
Revenue		25,185		23,366		46,463		44,913
Costs applicable to sales		18,645	[2]	19,157	[3]	36,142	[4]	38,284	[5]
Amortization		1,853		5,271		3,607		9,961
Exploration		0		43		0		79
Write-downs		0				0
Other operating expenses		1,076		241		1,367		485
Fair value adjustments, net		0		0		0		0
Interest expense, net		(7)		(293)		(10)		(574)
Other, net		411		420		726		872
Income and mining tax benefit (expense)		848		195		(723)		(1,211)
Net income (loss)		4,863		(1,024)		5,340		(4,809)
Assets, Net		83,814	[2]	173,451	[6]	83,814	[2]	173,451	[6]
Capital expenditures		1,317		994		1,838		1,943
Coeur Capital [Member]
Financial information relating to reporting segments
Metal Sales		505		3,083		2,396		5,028
Royalty Revenue		1,810		1,758		3,561		3,759
Revenue		2,315		4,841		5,957		8,787
Costs applicable to sales		281	[2]	1,352	[3]	937	[4]	1,985	[5]
Amortization		100		2,619		881		4,770
Exploration		85		75		206		150
Write-downs		0				4,446
Other operating expenses		38		13		175		30
Fair value adjustments, net		0		0		0		0
Interest expense, net		0		0		0		0
Other, net		1,460		(924)		3,742		(2,449)
Income and mining tax benefit (expense)		(2,275)		(623)		(3,567)		(24)
Net income (loss)		996		(765)		(513)		(621)
Assets, Net		9,158	[2]	55,896	[6]	9,158	[2]	55,896	[6]
Capital expenditures		0		0		0		0
Other Mining Properties [Member]
Financial information relating to reporting segments
Metal Sales		0		0		0		0
Royalty Revenue		0		0		0		0
Revenue		0		0		0		0
Costs applicable to sales		0	[2]	0	[3]	0	[4]	0	[5]
Amortization		414		476		842		994
Exploration		421		691		1,167		1,339
Write-downs		0				0
Other operating expenses		8,727		8,801		19,038		22,283
Fair value adjustments, net		(52)		1,188		(1,634)		141
Interest expense, net		(10,201)		(9,335)		(20,370)		(18,191)
Other, net		4,287		(1,866)		4,246		(2,173)
Income and mining tax benefit (expense)		(614)		1,469		352		3,243
Net income (loss)		(16,142)		(18,512)		(38,453)		(41,596)
Assets, Net		75,061	[2]	78,395	[6]	75,061	[2]	78,395	[6]
Capital expenditures		176		87		223		123
United States [Member]
Financial information relating to reporting segments
Revenue		106,236		99,180		199,890		187,249
Mexico [Member]
Financial information relating to reporting segments
Revenue		48,489		39,443		79,011		79,584
BOLIVIA
Financial information relating to reporting segments
Revenue		25,185		23,366		46,463		44,913
Australia [Member]
Financial information relating to reporting segments
Revenue		504		3,083		2,395		5,028
Other Foreign Countries [Member]
Financial information relating to reporting segments
Revenue		$ 1,593		$ 1,191		$ 2,635		$ 2,445

[1] Excludes amortization.

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

[3] Excludes amortization

[4] Excludes amortization

[5] Excludes amortization

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