Coeur Mining (CDE) 10-K 7 Feb 18 2017 Q4 Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Feb. 05, 2018	Jun. 30, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	COEUR MINING, INC.
Entity Central Index Key	215,466
Document Type	10-K
Document Period End Date	Dec. 31, 2017
Amendment Flag	false
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q4
Trading Symbol	CDE
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		185,442,526
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 1,538,261,285

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Statement of Comprehensive Income [Abstract]
Revenues	$ 214,585	$ 159,919	$ 149,540	$ 185,554	$ 139,204	$ 148,762	$ 156,822	$ 127,109	$ 709,598		$ 571,897		$ 561,407
COSTS AND EXPENSES
Costs applicable to sales	121,982	101,559	102,229	114,490	84,903	84,594	81,820	84,058	440,260	[1]	335,375	[1]	403,827	[1]
Amortization	44,722	32,401	30,733	38,693	28,625	26,040	35,653	26,210	146,549		116,528		125,953
General and administrative									33,616		29,275		32,636
Exploration	7,454	9,792	7,813	5,252	5,260	3,706	2,233	1,731	30,311		12,930		11,521
Write-downs									0		4,446		246,625
Pre-development, reclamation, and other									18,936		14,411		16,204
Total costs and expenses									669,672		512,965		836,766
OTHER INCOME (EXPENSE), NET
Gain (Loss) on Extinguishment of Debt									(9,342)		(21,365)		15,916
Fair value adjustments, net, pretax									(864)		(11,581)		5,202
Interest expense, net of capitalized interest									(16,440)		(36,896)		(44,978)
Other, net									26,643		98		(17,667)
Total other income (expense), net									(3)		(69,744)		(41,527)
Total									39,923		(10,812)		(316,886)
Income and mining tax benefit (expense)									(28,998)		33,247		29,075
Income (loss) from continuing operations	14,349	(11,728)	(9,995)	18,299	(10,328)	46,123	8,280	(21,640)	10,925		22,435		(287,811)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	(6,724)	(4,924)	(960)	364	2,020	23,436	6,217	1,244	(12,244)		32,917		(79,372)
Net income (loss)	$ 7,625	$ (16,652)	$ (10,955)	$ 18,663	$ (8,308)	$ 69,559	$ 14,497	$ (20,396)	(1,319)		55,352		(367,183)
OTHER COMPREHENSIVE INCOME (LOSS), Net of Tax:
Unrealized gain (loss) on equity securities, net of tax of ($767) for the year ended December 31, 2016									3,227		3,222		(4,154)
Reclassification adjustments for impairment of equity securities									426		703		2,346
Reclassification adjustments for realized (gain) loss on sale of equity securities									1,354		(2,691)		894
Other comprehensive income (loss)									5,007		1,234		(914)
COMPREHENSIVE INCOME (LOSS)									$ 3,688		$ 56,586		$ (368,097)
Income (Loss) from Continuing Operations, Per Basic Share	$ 0.08	$ (0.06)	$ (0.05)	$ 0.10	$ (0.06)	$ 0.29	$ 0.05	$ (0.15)	$ 0.06		$ 0.14		$ (2.22)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	(0.04)	(0.03)	(0.01)	0	0.01	0.14	0.04	0.01	(0.07)		0.21		(0.61)
NET INCOME (LOSS) PER SHARE
Basic (in dollars per share)	0.04	(0.09)	(0.06)	0.10	(0.05)	0.43	0.09	(0.14)	(0.01)		0.35		(2.83)
Income (Loss) from Continuing Operations, Per Diluted Share	0.04	(0.09)	(0.06)	0.10	(0.05)	0.42	0.09	(0.14)	0.06		0.14		(2.22)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	0.08	(0.06)	(0.05)	0.10	(0.06)	0.28	0.05	(0.15)	(0.07)		0.20		(0.61)
Diluted (in dollars per share)	$ (0.04)	$ (0.03)	$ (0.01)	$ 0	$ 0.01	$ 0.14	$ 0.04	$ 0.01	$ (0.01)		$ 0.34		$ (2.83)
[1]	Excludes amortization.

Consolidated Statements of Com3

Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Unrealized gain (loss) on equity securities, tax	$ 0	$ 767	$ 0

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)		$ (1,319)	$ 55,352	$ (367,183)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent		12,244	(32,917)	79,372
Adjustments:
Amortization		146,549	116,528	125,953
Accretion		9,980	9,142	13,332
Deferred income taxes		(13,888)	(54,184)	(38,496)
Loss on Extinguishment of Debt		9,342	21,365	(15,916)
Fair value adjustments, net		864	11,581	(5,202)
Stock-based compensation		10,541	9,715	9,272
Gain on sale of the Joaquin project		(21,138)	0	0
Write-downs		0	4,446	246,625
Foreign exchange and other		(7,974)	356	18,983
Changes in operating assets and liabilities:
Receivables		18,895	(2,783)	(5,022)
Prepaid expenses and other current assets		(2,015)	(4,420)	5,702
Inventories		23,517	(34,610)	15,578
Accounts payable and accrued liabilities		11,562	(3,110)	4,414
CASH PROVIDED BY OPERATING ACTIVITIES		197,160	96,461	87,412
Cash Provided by (Used in) Operating Activities, Discontinued Operations		11,296	29,356	26,130
Net Cash Provided by (Used in) Operating Activities		208,456	125,817	113,542
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures		(136,734)	(94,382)	(88,973)
Payments to Acquire Businesses, Net of Cash Acquired		(156,248)	(1,417)	(110,846)
Proceeds from the sale of assets		16,705	16,296	607
Purchase of short term investments and equity securities		(15,058)	(178)	(1,880)
Sales and maturities of short-term investments		11,321	7,077	605
Other		(217)	(4,208)	(4,586)
Net Cash Provided by (Used in) Investing Activities, Continuing Operations		(280,231)	(76,812)	(205,073)
Cash Provided by (Used in) Investing Activities, Discontinued Operations		(1,392)	(6,631)	(6,220)
CASH USED IN INVESTING ACTIVITIES		(281,623)	(83,443)	(211,293)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from Issuance of Common Stock		0	269,556	0
Proceeds from Issuance of Unsecured Debt		342,620	0	150,000
Payments on long-term debt, capital leases, and associated costs		(203,045)	(318,153)	(70,603)
Gold production royalty payments		0	(27,155)	(39,235)
Other		(3,746)	172	(542)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations		135,829	(75,580)	39,620
Cash Provided by (Used in) Financing Activities, Discontinued Operations		(84)	(4,648)	(10,612)
Net Cash Provided by (Used in) Financing Activities		135,745	(80,228)	29,008
Effect of exchange rate changes on cash and cash equivalents		203	(678)	(1,404)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS		62,781	(38,532)	(70,147)
Cash and cash equivalents at beginning of period		118,312	158,420	240,119
Cash and cash equivalents at end of period		192,032	118,312	158,420
Net Cash Provided by (Used in) Discontinued Operations	[1]	(10,939)	1,576	11,552
CashAndCashEquivalentsPeriodIncreaseDecreaseExcludingNetCashProvidedByUsedInDiscontinuedOperationsAssetsHeldForSale		73,720	(40,108)	(81,699)
Net subsidiary payments to parent company		$ 20,759	$ 16,501
Net parent company payments to subsidiary				$ 2,254
[1]	Less net cash provided by (used in) discontinued operations includes the following cash transactions: net subsidiary payments to parent company of $20,759, $16,501 during the years ended December 31, 2017, 2016, respectively, and net parent company payments to subsidiary of $2,254 during the year ended December 31, 2015.

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
CURRENT ASSETS
Cash and cash equivalents	$ 192,032	$ 118,312
Receivables	19,069	53,415
Inventory	58,230	93,436
Ore on leach pads	73,752	64,167
Prepaid expenses and other	15,053	10,015
Disposal Group, Including Discontinued Operation, Assets, Current	91,421	71,442
Current assets	449,557	410,787
NON-CURRENT ASSETS
Property, plant and equipment, net	254,737	193,423
Mining properties, net	829,569	550,290
Ore on leach pads, noncurrent	65,393	67,231
Restricted assets	20,847	17,597
Equity and debt securities	34,837	4,488
Receivables	28,750	13,745
Other	17,485	12,585
Disposal Group, Including Discontinued Operation, Assets, Noncurrent	0	48,763
TOTAL ASSETS	1,701,175	1,318,909
CURRENT LIABILITIES
Accounts payable	48,592	44,660
Accrued liabilities and other	94,930	36,445
Debt	30,753	11,955
Royalty obligations	0	4,995
Reclamation	3,777	3,109
Disposal Group, Including Discontinued Operation, Liabilities, Current	50,677	15,470
Current liabilities	228,729	116,634
NON-CURRENT LIABILITIES
Debt	380,569	198,682
Royalty obligations	0	4,292
Reclamation	117,055	85,592
Deferred tax liabilities	105,148	69,811
Other long-term liabilities	54,697	41,654
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent	0	33,757
Non-current liabilities	657,469	433,788
STOCKHOLDERS' EQUITY
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 185,637,724 at December 31, 2017 and 180,933,287 at December 31, 2016	1,856	1,809
Additional paid-in capital	3,357,345	3,314,590
Accumulated other comprehensive income (loss)	2,519	(2,488)
Accumulated deficit	(2,546,743)	(2,545,424)
Stockholders' equity	814,977	768,487
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 1,701,175	$ 1,318,909

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2017	Dec. 31, 2016
STOCKHOLDERS' EQUITY
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	185,637,724	180,933,287

Condensed Consolidated Statemen

Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	JDS Silver [Member]	JDS Silver [Member]Common Stock	JDS Silver [Member]Additional Paid-In Capital	Paramount Gold and Silver Corp.	Paramount Gold and Silver Corp.Common Stock	Paramount Gold and Silver Corp.Additional Paid-In Capital
Balances at Dec. 31, 2014	$ 554,328	$ 1,034	$ 2,789,695	$ (2,233,593)	$ (2,808)
Balances, in shares at Dec. 31, 2014		103,384
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(367,183)			(367,183)
Other comprehensive income (loss)	(914)				(914)
Stock Issued During Period, Shares, Acquisitions										32,667
Stock Issued During Period, Value, Acquisitions									$ 188,817	$ 327	$ 188,490
Stock Issued During Period, Shares, Extinguishment of Debt		14,365
Stock Issued During Period, Value, Extinguishment of Debt	38,523	$ 144	38,379
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures		923
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	7,905	$ 8	7,897
Balances at Dec. 31, 2015	421,476	$ 1,513	3,024,461	(2,600,776)	(3,722)
Balances, in shares at Dec. 31, 2015		151,339
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	55,352			55,352
Other comprehensive income (loss)	1,234				1,234
Stock Issued During Period, Shares, Extinguishment of Debt		739
Stock Issued During Period, Value, Extinguishment of Debt	11,813	$ 7	11,806
Stock Issued During Period, Shares, New Issues		26,944
Stock Issued During Period, Value, New Issues	269,556	$ 270	269,286
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures		1,911
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	9,056	$ 19	9,037
Balances at Dec. 31, 2016	768,487	$ 1,809	3,314,590	(2,545,424)	(2,488)
Balances, in shares at Dec. 31, 2016		180,933
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(1,319)			(1,319)
Other comprehensive income (loss)	5,007				5,007
Stock Issued During Period, Shares, Acquisitions							4,192
Stock Issued During Period, Value, Acquisitions						$ 36,007	$ 42	$ 35,965
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures		513
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	6,795	$ 5	6,790
Balances at Dec. 31, 2017	$ 814,977	$ 1,856	$ 3,357,345	$ (2,546,743)	$ 2,519
Balances, in shares at Dec. 31, 2017		185,638

Basis of Presentation

Basis of Presentation	12 Months Ended
	Dec. 31, 2017
Basis of Presentation [Abstract]
Basis of Presentation	THE COMPANY Coeur Mining, Inc. (“Coeur” or “the Company”) is a gold and silver producer, as well as a zinc and lead producer after the acquisition of Silvertip, with mines located in the United States, Mexico, and Canada and exploration projects in the United States and Mexico. The Company operates the Palmarejo complex as well as the Kensington, Rochester, Wharf, and Silvertip mines. At December 31, 2017, the Company determined that the expected disposal of Empresa Minera Manquiri S.A. ("Manquiri") and the San Bartolomé mine represents a strategic shift to a North America-focused mining portfolio that is expected to have a major effect on the entity's results and operations; therefore, the applicable assets and liabilities for all periods presented are included in the consolidated balance sheets as held for sale and the results of operations as discontinued operations for all periods. The cash flow and profitability of the Company's operations are significantly impacted by the market price of gold and silver. The prices of gold and silver are affected by numerous factors beyond the Company's control.

Summary Of Significant Accounti

Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Reclassifications Certain reclassifications have been made to the 2016 and 2015 consolidated financial statements to conform to the 2017 presentations. These reclassifications primarily represent reclassifications of revenue and expenses to discontinued operations on the consolidated statements of operations and comprehensive income and consolidated statements of cash flows for the years ended December 31, 2016 and 2015 and reclassifications of assets and liabilities to held for sale on the consolidated balance sheet as of December 31, 2016. Use of Estimates The Company's Consolidated Financial Statements have been prepared in accordance with United States Generally Accepted Accounting Principles. The preparation of the Company's Consolidated Financial Statements requires the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities and the related disclosure of contingent assets and liabilities at the date of the Consolidated Financial Statements and reported amounts of revenues and expenses during the reporting period. The more significant areas requiring the use of management estimates and assumptions relate to metal prices and mineral reserves that are the basis for future cash flow estimates utilized in impairment calculations and units-of production amortization calculations, environmental, reclamation and closure obligations, estimates of recoverable silver and gold in leach pad inventories, estimates of fair value for certain reporting units and asset impairments, valuation allowances for deferred tax assets, and the fair value and accounting treatment of financial instruments, equity securities, the allocation of fair value to assets and liabilities assumed in connection with business combinations, and derivative instruments. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances. Accordingly, actual results will differ from the amounts estimated in these financial statements. Principles of Consolidation The Consolidated Financial Statements include the wholly-owned subsidiaries of the Company, the most significant of which are Coeur Mexicana S.A. de C.V., Coeur Rochester, Inc., Coeur Alaska, Inc., Wharf Resources (U.S.A.), Inc., Coeur Silvertip Holdings Ltd., and Coeur Capital, Inc. All intercompany balances and transactions have been eliminated. The Company's investments in entities in which it has less than 20% ownership interest are accounted for using the cost method. Cash and Cash Equivalents Cash and cash equivalents include all highly-liquid investments with an original maturity of three months or less. The Company minimizes its credit risk by investing its cash and cash equivalents with major U.S. and international banks and financial institutions located principally in the United States with a minimum credit rating of A1, as defined by Standard & Poor’s. The Company’s management believes that no concentration of credit risk exists with respect to the investment of its cash and cash equivalents. Receivables Trade receivables and other receivable balances are reported at outstanding principal amounts, net of an allowance for doubtful accounts, if deemed necessary. Management evaluates the collectability of receivable account balances to determine the allowance, if any. Management considers the other party's credit risk and financial condition, as well as current and projected economic and market conditions, in determining the amount of the allowance. Receivable balances are written off when management determines that the balance is uncollectible. Ore on Leach Pads The heap leach process extracts silver and gold by placing ore on an impermeable pad and applying a diluted cyanide solution that dissolves a portion of the contained silver and gold, which are then recovered in metallurgical processes. The Company uses several integrated steps to scientifically measure the metal content of ore placed on the leach pads. As the ore body is drilled in preparation for the blasting process, samples are taken of the drill residue which are assayed to determine estimated quantities of contained metal. The Company estimates the quantity of ore by utilizing global positioning satellite survey techniques. The Company then processes the ore through crushing facilities where the output is again weighed and sampled for assaying. A metallurgical reconciliation with the data collected from the mining operation is completed with appropriate adjustments made to previous estimates. The crushed ore is then transported to the leach pad for application of the leaching solution. As the leach solution is collected from the leach pads, it is continuously sampled for assaying. The quantity of leach solution is measured by flow meters throughout the leaching and precipitation process. After precipitation, the product is converted to doré at the Rochester mine and a form of gold concentrate at the Wharf mine, representing the final product produced by each mine. The inventory is stated at lower of cost or market, with cost being determined using a weighted average cost method. The historical cost of metal expected to be extracted within twelve months is classified as current and the historical cost of metals contained within the broken ore expected to be extracted beyond twelve months is classified as non-current. Ore on leach pads is valued based on actual production costs incurred to produce and place ore on the leach pad, less costs allocated to minerals recovered through the leach process. The estimate of both the ultimate recovery expected over time and the quantity of metal that may be extracted relative to the time the leach process occurs requires the use of estimates, which are inherently inaccurate due to the nature of the leaching process. The quantities of metal contained in the ore are based upon actual weights and assay analysis. The rate at which the leach process extracts gold and silver from the crushed ore is based upon laboratory testing and actual experience of more than twenty years of leach pad operations at the Rochester mine and thirty years of leach pad operations at the Wharf mine. The assumptions used by the Company to measure metal content during each stage of the inventory conversion process includes estimated recovery rates based on laboratory testing and assaying. The Company periodically reviews its estimates compared to actual experience and revises its estimates when appropriate. Variations between actual and estimated quantities resulting from changes in assumptions and estimates that do not result in write-downs to net realizable value are accounted for on a prospective basis. Metal and Other Inventory Inventories include concentrate, doré, and operating materials and supplies. The classification of inventory is determined by the stage at which the ore is in the production process. All inventories are stated at the lower of cost or market, with cost being determined using a weighted average cost method. Concentrate and doré inventory includes product at the mine site and product held by refineries. Metal inventory costs include direct labor, materials, depreciation, depletion and amortization as well as overhead costs relating to mining activities. Property, Plant, and Equipment Expenditures for new facilities, assets acquired pursuant to capital leases, new assets or expenditures that extend the useful lives of existing facilities are capitalized and depreciated using the straight-line method at rates sufficient to depreciate such costs over the shorter of estimated productive lives of such facilities, lease term, or the useful life of the individual assets. Productive lives range from 7 to 30 years for buildings and improvements and 3 to 10 years for machinery and equipment. Certain mining equipment is depreciated using the units-of-production method based upon estimated total proven and probable reserves. Mining Properties and Mine Development Capitalization of mine development costs begins once all operating permits have been secured, mineralization is classified as proven and probable reserves and a final feasibility study has been completed. Mine development costs include engineering and metallurgical studies, drilling and other related costs to delineate an ore body, the removal of overburden to initially expose an ore body at open pit surface mines and the building of access ways, shafts, lateral access, drifts, ramps and other infrastructure at underground mines. Costs incurred before mineralization are classified as proven and probable reserves are capitalized if a project is in pre-production phase or expensed and classified as Exploration or Pre-development if the project is not yet in pre-production. Mine development costs are amortized using the units of production method over the estimated life of the ore body based on recoverable ounces to be mined from proven and probable reserves. Interest expense allocable to the cost of developing mining properties and to construct new facilities is capitalized until assets are ready for their intended use. Drilling and related costs incurred at the Company’s operating mines are expensed as incurred in Exploration, unless the Company can conclude with a high degree of confidence, prior to the commencement of a drilling program, that the drilling costs will result in the conversion of a mineral resource into proven and probable reserves. The Company’s assessment is based on the following factors: results from previous drill programs; results from geological models; results from a mine scoping study confirming economic viability of the resource; and preliminary estimates of mine inventory, ore grade, cash flow and mine life. In addition, the Company must have all permitting and/or contractual requirements necessary to have the right to and/or control of the future benefit from the targeted ore body. The costs of a drilling program that meet these criteria are capitalized as mine development costs. Drilling and related costs of approximately $11.7 million and $12.9 million at December 31, 2017 and 2016, respectively, were capitalized. The cost of removing overburden and waste materials to access the ore body at an open pit mine prior to the production phase are referred to as “pre-stripping costs.” Pre-stripping costs are capitalized during the development of an open pit mine. Stripping costs incurred during the production phase of a mine are variable production costs that are included as a component of inventory to be recognized in Costs applicable to sales in the same period as the revenue from the sale of inventory. Mineral Interests Significant payments related to the acquisition of land and mineral rights are capitalized. Prior to acquiring such land or mineral rights, the Company generally makes a preliminary evaluation to determine that the property has significant potential to develop an economic ore body. The time between initial acquisition and full evaluation of a property’s potential is variable and is determined by many factors including: location relative to existing infrastructure, the property’s stage of development, geological controls and metal prices. If a mineable ore body is discovered, such costs are amortized when production begins using the units of- production method based on recoverable ounces to be mined from proven and probable reserves. If no mineable ore body is discovered, such costs are expensed in the period in which it is determined the property has no future economic value. Write-downs We review and evaluate our long-lived assets for impairment whenever events or changes in circumstances indicate that the related carrying amounts may not be recoverable. Asset impairment is considered to exist if the total estimated undiscounted pretax future cash flows are less than the carrying amount of the asset. In estimating future cash flows, assets are grouped at the lowest level for which there is identifiable cash flows that are largely independent of future cash flows from other asset groups. An impairment loss is measured by discounted estimated future cash flows, and recorded by reducing the asset's carrying amount to fair value. Future cash flows are estimated based on estimated quantities of recoverable minerals, expected silver and gold prices (considering current and historical prices, trends and related factors), production levels, operating costs, capital requirements and reclamation costs, all based on life-of-mine plans. During 2016 and 2015, we recorded impairments of $4.4 million and $246.6 million , respectively, to reduce the carrying value of mining properties and property, plant and equipment as part of Write-downs. Existing proven and probable reserves and value beyond proven and probable reserves, including mineralization other than proven and probable reserves are included when determining the fair value of mine site asset groups at acquisition and, subsequently, in determining whether the assets are impaired. The term “recoverable minerals” refers to the estimated amount of silver and gold that will be obtained after taking into account losses during ore processing and treatment. Estimates of recoverable minerals from exploration stage mineral interests are risk adjusted based on management’s relative confidence in such materials. The ability to achieve the estimated quantities of recoverable minerals from exploration stage mineral interests involves further risks in addition to those risk factors applicable to mineral interests where proven and probable reserves have been identified, due to the lower level of confidence that the identified mineralized material could ultimately be mined economically. Assets classified as exploration potential have the highest level of risk that the carrying value of the asset can be ultimately realized, due to the still lower level of geological confidence and economic modeling. Silver and gold prices are volatile and affected by many factors beyond the Company’s control, including prevailing interest rates and returns on other asset classes, expectations regarding inflation, speculation, currency values, governmental decisions regarding precious metals stockpiles, global and regional demand and production, political and economic conditions and other factors may affect the key assumptions used in the Company’s impairment testing. Various factors could impact our ability to achieve forecasted production levels from proven and probable reserves. Additionally, production, capital and reclamation costs could differ from the assumptions used in the cash flow models used to assess impairment. Actual results may vary from the Company’s estimates and result in additional Write-downs . Properties Held for Sale In determining whether to classify a property as held for sale, the Company considers whether: (i) management has committed to a plan to sell the property; (ii) the investment is available for immediate sale, in its present condition; (iii) the Company has initiated a program to locate a buyer; (iv) the Company believes that the sale of the property is probable; (v) the Company has received a significant non-refundable deposit for the purchase of the property; (vi) the Company is actively marketing the property for sale at a price that is reasonable in relation to its estimated fair value; and (vii) actions required for the Company to complete the plan indicate that it is unlikely that any significant changes will be made to the plan. If all of the above criteria are met, the Company classifies the property as held for sale. When these criteria are met, the Company suspends depreciation on the properties held for sale. The properties held for sale and associated liabilities are classified separately on the consolidated balance sheets. Such properties are recorded at the lesser of the carrying value or estimated fair value less costs to sell. Additionally, if the sale represents a strategic shift that has (or will have) a major effect on the entity's results and operations, the assets, liabilities and operations for the periods presented are classified on the consolidated balance sheets as held for sale and consolidated statements of operations and comprehensive income (loss) as discontinued operations for all periods presented. At December 31, 2017, the San Bartolomé mine met the held for sale criteria. Furthermore, considering that San Bartolomé is one of the Company’s current five operating mines and the expected sale would represent an exit from the South American region, the Company has determined that the expected disposal of Manquiri and the San Bartolomé mine through a sale of all of the issued and outstanding shares of Manquiri represents a strategic shift to a North America-focused mining portfolio that is expected to have a major effect on the entity's results and operations, therefore, the applicable assets, liabilities and operations for the periods presented are classified on the consolidated balance sheets as held for sale and the consolidated statements of operations and comprehensive income (loss) as discontinued operations for all periods presented. Results of operations for the year ended December 31, 2017 include a $3.4 million write-down of assets to expected realizable value, included in Income (loss) from discontinued operations. Restricted Assets The Company, under the terms of its self-insurance and bonding agreements with certain banks, lending institutions and regulatory agencies, is required to collateralize certain portions of its obligations. The Company has collateralized these obligations by assigning certificates of deposit that have maturity dates ranging from three months to a year, to the respective institutions or agencies. At December 31, 2017 and 2016, the Company held certificates of deposit and cash under these agreements of $20.8 million and $17.6 million , respectively. The ultimate timing of the release of the collateralized amounts is dependent on the timing and closure of each mine and repayment of the facility. In order to release the collateral, the Company must seek approval from certain government agencies responsible for monitoring the mine closure status. Collateral could also be released to the extent the Company is able to secure alternative financial assurance satisfactory to the regulatory agencies. The Company believes there is a reasonable probability that the collateral will remain in place beyond a twelve-month period and has therefore classified these investments as long-term. Reclamation The Company recognizes obligations for the expected future retirement of tangible long-lived assets and other associated asset retirement costs. The fair value of a liability for an asset retirement obligation will be recognized in the period in which it is incurred if a reasonable estimate of fair value can be made. The fair value of the liability is added to the carrying amount of the associated asset and this additional carrying amount is depreciated over the life of the asset. An accretion cost, representing the increase over time in the present value of the liability, is recorded each period in Pre-development, reclamation, and other . As reclamation work is performed or liabilities are otherwise settled, the recorded amount of the liability is reduced. Future remediation costs for inactive mines are accrued based on management’s best estimate at the end of each period of the discounted costs expected to be incurred at the site. Such cost estimates include, where applicable, ongoing care and maintenance and monitoring costs. Changes in estimates are reflected prospectively in the period an estimate is revised. Revenue Recognition Revenue is recognized, net of treatment and refining charges, when persuasive evidence of an arrangement exists, delivery has occurred, the price is fixed or determinable, no obligations remain, and collection is probable. Under the Company’s concentrate sales contracts with third-party smelters, gold and silver prices are set on a specified future quotational period, typically one to three months, after the shipment date based on market prices. Revenue and Costs Applicable to Sales are recorded on a gross basis under these contracts at the time title passes to the buyer based on the forward price for the expected settlement period. The contracts, in general, provide for provisional payment based upon provisional assays and forward metal prices. Final settlement is based on the average applicable price for the specified future quotational period and generally occurs from three to six months after shipment. The Company’s provisionally priced sales contain an embedded derivative that is required to be separated from the host contract for accounting purposes. The host contract is the receivable from the sale of concentrates measured at the forward price at the time of sale. The embedded derivative does not qualify for hedge accounting and is adjusted to fair value through revenue each period until the date of final gold and silver settlement. Foreign Currency The assets and liabilities of the Company’s foreign subsidiaries are measured using U.S. dollars as their functional currency. Revenues and expenses are remeasured at the average exchange rate for the period. Foreign currency gains and losses are included in the determination of net income or loss. Derivative Financial Instruments The Company recognizes all derivatives as either assets or liabilities on the balance sheet and measures those instruments at fair value. Changes in the value of derivative instruments are recorded each period in the Consolidated Statement of Comprehensive Income (Loss) in Fair value adjustments, net . Management applies judgment in estimating the fair value of instruments that are highly sensitive to assumptions regarding commodity prices, market volatilities, and foreign currency exchange rates. Stock-based Compensation The Company estimates the fair value of stock options using the Black-Scholes option pricing model and stock appreciation rights (“SARs”) awards using market comparison. Stock options granted are accounted for as equity-based awards and SARs are accounted for as liability-based awards. The value of the SARs is remeasured at each reporting date. The Company estimates forfeitures of stock-based awards based on historical data and periodically adjusts the forfeiture rate. The adjustment of the forfeiture rate is recorded as a cumulative adjustment in the period the forfeiture estimate is changed. Compensation costs related to stock based compensation are included in General and administrative expenses , Costs applicable to sales , and Property, plant, and equipment, net as deemed appropriate. The fair value of restricted stock based on the Company's stock price on the date of grant. The fair value of performance leverage stock units (“PSUs”) with market conditions is determined using a Monte Carlo simulation model. Stock based compensation expense related to awards with a market or performance condition is generally recognized over the vesting period of the award utilizing the graded vesting method, while all other awards are recognized on a straight-line basis. The Company's estimates may be impacted by certain variables including, but not limited to, stock price volatility, employee stock option exercise behaviors, additional stock option grants, estimates of forfeitures, the Company's performance, and related tax impacts. Income and Mining Taxes The Company uses an asset and liability approach which results in the recognition of deferred tax liabilities and assets for the expected future tax consequences or benefits of temporary differences between the financial reporting basis and the tax basis of assets and liabilities, as well as operating loss and tax credit carryforwards, using enacted tax rates in effect in the years in which the differences are expected to reverse. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of its deferred tax assets will not be realized. Management considers the scheduled reversal of deferred tax liabilities, projected future taxable income and tax planning strategies in making this assessment. A valuation allowance has been provided for the portion of the Company’s net deferred tax assets for which it is more likely than not that they will not be realized. On December 22, 2017, the United States (“U.S.”) enacted significant changes to U.S. tax law following the passage and signing of H.R.1, “An Act to Provide for Reconciliation Pursuant to Titles II and V of the Concurrent Resolution on the Budget for Fiscal Year 2018” which makes widespread changes to the Internal Revenue Code, including, among other items, a reduction in the federal corporate tax rate to 21%, effective January 1, 2018. The Company is subject to the provisions of the Financial Accounting Standards Board (“FASB”) ASC 740-10, Income Taxes, which requires that the effect on deferred tax assets and liabilities of a change in tax rates be recognized in the period the tax rate change was enacted. The carrying value of our U.S. deferred taxes is determined by the enacted U.S. corporate income tax rate. Consequently, the reduction in the U.S. corporate income tax rate impacts the carrying value of our deferred tax assets. Under the new corporate income tax rate of 21%, the U.S. net deferred tax asset position will decrease as will the related valuation allowance. The net effect of the tax reform enactment on the financial statements is minimal. While there are certain aspects of the new tax law that will not impact the Company based on its tax attributes, such as the one-time transition tax on unremitted foreign earnings; there are other aspects of the law, which could have a positive impact on the Company’s future U.S. income tax expense, including the elimination of the U.S. corporate alternative minimum tax. However, uncertainty regarding the impact of tax reform remains, as a result of factors including future regulatory and rulemaking processes, the prospects of additional corrective or supplemental legislation, potential trade or other litigation, and other factors. Recent Accounting Standards In January 2017, the FASB issued ASU 2017-01, “ Business Combinations (Topic 805) - Clarifying the Definition of a Business, ” which clarifies the definition of a business to assist entities in the evaluation of acquisitions and disposals of assets or businesses. These changes become effective for the Company’s fiscal year beginning January 1, 2018. The Company is currently evaluating this standard and does not expect this ASU to materially impact the Company’s consolidated net income, financial position or cash flows. In November 2016, the FASB issued ASU 2016-18, “ Statement of Cash Flows (Topic 230) - Restricted Cash, ” which will require entities to show the changes in the total of cash, cash equivalents, restricted cash and restricted cash equivalents in the statement of cash flows. These changes become effective for the Company’s fiscal year beginning January 1, 2018. The Company is currently evaluating this standard and does not expect this ASU to materially impact the Company’s consolidated statement of cash flows. In August 2016, the FASB issued ASU 2016-15, “ Statement of Cash Flows (Topic 230) - Classification of Certain Cash Receipts and Cash Payments, ” which provides guidance on presentation and classification of certain cash receipts and payments in the statement of cash flows. These changes become effective for the Company’s fiscal year beginning January 1, 2018. The Company is currently evaluating this standard and does not expect this ASU to materially impact the Company’s consolidated net income, financial position or cash flows. In March 2016, the FASB issued ASU 2016-09, “ Improvements to Employee Share-Based Payment Accounting, ” which amends several aspects of the accounting for share-based payment transaction, including income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. These changes became effective for the Company’s fiscal year beginning January 1, 2017, and the Company’s adoption had no impact on the Company’s consolidated financial position, results of operations, and cash flows. In February 2016, the FASB issued ASU 2016-02, “ Leases, ” which will require lessees to recognize assets and liabilities for the rights and obligations created by most leases on the balance sheet. These changes become effective for the Company’s fiscal year beginning January 1, 2019. Modified retrospective adoption for all leases existing at, or entered into after, the date of initial application, is required with an option to use certain transition relief. The Company is currently evaluating the potential impact of implementing these changes on the Company’s consolidated financial position, results of operations, and cash flows. In January 2016, the FASB issued ASU 2016-01, “ Recognition and Measurement of Financial Assets and Financial Liabilities, ” which requires entities to measure equity investments that do not result in consolidation and are not accounted for under the equity method at fair value and recognize any changes in fair value in net income. This new guidance also updates certain disclosure requirements for these investments. These changes become effective for the Company’s fiscal year beginning January 1, 2018, and will result in a reclassification of unrealized holding gains and losses and deferred income taxes related to investments in marketable equity securities from Accumulated other comprehensive income (loss) to Accumulated deficit in the Consolidated Balance Sheets on that date. After the initial reclassification, unrealized holding gains and losses and deferred income taxes related to investments in marketable equity securities will be recognized in Fair value adjustments, net in the Consolidated Statements of Comprehensive Income (Loss). In July 2015, the FASB issued ASU 2015-11, “ Simplifying the Measurement of Inventory, ” which provides a revised, simpler measurement for inventory to be measured at the lower of cost and net realizable value. These changes become effective for the Company’s fiscal year beginning January 1, 2018. The Company is currently evaluating this standard and does not expect this ASU to materially impact the Company’s consolidated net income, financial position or cash flows. In May 2014, the FASB issued ASU 2014-09, “ Revenue from Contracts with Customers ” , which has subsequently been amended several times, to update revenue guidance under the newly-created ASC 606. The new standard provides a five-step approach to be applied to all contracts with customers and also requires expanded disclosures about revenue recognition. These changes become effective for the Company’s fiscal year beginning January 1, 2018. The Company has elected the modified retrospective method for adoption of ASC 606. The Company has substantially completed its analysis of the new standard and reviewed potential impacts from timing of when control is transferred to customers, variable consideration on concentrate sales and classification of refining fees. Currently, revenue is recognized for these contracts based on varying contractual terms indicating when risk of loss and title have transferred to the buyer. Upon adoption, revenue related to concentrate sales will typically be recognized upon completion of loading the material for shipment to the customer and satisfaction of the Company’s significant performance obligations. Based on our current analysis, the estimate of revenue recognized for concentrates will remain unchanged as sales will initially be recorded on a provisional basis based on the forward prices for the estimated month of settlement and the Company’s estimated metal quantities delivered based on weighing and assay data. The Company believes changes in the underlying weight and metal content are not significant to the sale as a whole and therefore do not preclude the recognition of revenue upon transfer of control. The Company’s provisional gold and copper concentrate sales will continue to contain an embedded derivative that is required to be separated from the host contract for accounting purposes. The host contract is the receivable from the sale of the gold concentrates at the prevailing indices’ prices at the time of sale. The emb

Write-Downs (Notes)

Write-Downs (Notes)	12 Months Ended
	Dec. 31, 2017
Impairment or Disposal of Tangible Assets Disclosure [Abstract]
Write Down of Property [Text Block]	WRITE-DOWNS Year ended December 31, 2017 2016 2015 Mining properties Palmarejo $ — $ — $ 205,803 Coeur Capital — 4,446 22,118 — 4,446 227,921 Property, plant, and equipment Palmarejo $ — $ — $ 18,704 Total $ — $ 4,446 $ 246,625 The 2016 write-down of $4.4 million ( $3.9 million net of tax) was due to the impairment of Coeur Capital assets. The operator of the Endeavor mine in Australia, on which the Company holds a 100% silver stream, announced in early 2016 a significant curtailment of production due to low lead and zinc prices. As a result, Coeur recorded a $2.5 million write-down of the mineral interest associated with the Endeavor Silver Stream at March 31, 2016. In April 2016, Coeur sold its tiered NSR royalty on the El Gallo mine to the operator, a subsidiary of McEwen Mining Inc., for total consideration of approximately $6.3 million , including $1 million in contingent consideration. In anticipation of this sale, the Company recorded a $1.9 million write-down of the mineral interest at March 31, 2016. The 2015 write-down of $246.6 million ( $209.8 million net of tax) was due to a $224.5 million impairment of the Palmarejo complex ( $193.5 million net of tax) and a $22.1 million impairment ( $16.3 million net of tax) of certain Coeur Capital assets, including the Endeavor Silver Stream and other royalties. The non-cash impairment charges were largely driven by significant decreases in long-term metal price assumptions and revised mine plans in the fourth quarter. For purposes of this evaluation, estimates of future cash flows of the individual reporting units were used to determine fair value. The estimated cash flows were derived from life-of-mine plans, developed using long-term pricing reflective of the current price environment and management’s projections for operating costs.

Segment Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
SEGMENT REPORTING	SEGMENT REPORTING The Company’s operating segments include the Palmarejo complex, and the Rochester, Kensington, Wharf and Silvertip mines. Except for the Silvertip mine, which was acquired in the fourth quarter of 2017, all operating segments are engaged in the discovery, mining, and production of gold and/or silver. Silvertip is engaged in the discovery, mining, and production of silver, zinc and lead. Other includes the La Preciosa project, other mineral interests, strategic equity investments, corporate office, elimination of intersegment transactions, and other items necessary to reconcile to consolidated amounts. The Company eliminated Coeur Capital as a standalone reportable segment in the first quarter and has classified the operating performance, segment assets, and capital expenditures of the Endeavor Silver Stream and other remaining non-core assets in Other. All prior period amounts have been adjusted to conform to the current presentation. At December 31, 2017, we determined that the expected disposition of Manquiri and the San Bartolomé mine represents a strategic shift to a North America-focused mining portfolio that is expected to have a major effect on the entity's results and operations, therefore, the applicable assets and liabilities for all periods presented are included in the consolidated balance sheets as held for sale and the results of operations as discontinued operations for all periods. Financial information relating to the Company’s segments is as follows (in thousands): Year ended December 31, 2017 Palmarejo Rochester Silvertip Kensington Wharf Other Total Revenue Metal sales $ 274,809 $ 152,680 $ — $ 154,469 $ 125,901 $ 1,739 $ 709,598 Costs and Expenses Costs applicable to sales (1) 146,176 107,921 — 116,096 69,322 745 440,260 Amortization 73,744 22,306 — 36,022 13,012 1,465 146,549 Exploration 11,924 1,352 — 8,604 320 8,111 30,311 Other operating expenses 1,263 3,394 153 1,412 2,468 43,862 52,552 Other income (expense) Loss on debt extinguishment — — — — — (9,342 ) (9,342 ) Fair value adjustments, net — (864 ) — — — — (864 ) Interest expense, net (487 ) (496 ) (2,212 ) (413 ) (66 ) (12,766 ) (16,440 ) Other, net (851 ) 2,193 1,142 (922 ) 172 24,909 26,643 Income and mining tax (expense) benefit (24,330 ) (1,028 ) (932 ) — (3,936 ) 1,228 (28,998 ) Income (loss) from continuing operations $ 16,034 $ 17,512 $ (2,155 ) $ (9,000 ) $ 36,949 $ (48,415 ) $ 10,925 Income (loss) from discontinued operations $ — $ — $ — $ — $ — $ (12,244 ) $ (12,244 ) Segment assets (2) $ 377,621 $ 239,223 $ 339,369 $ 212,588 $ 104,010 $ 71,742 $ 1,344,553 Capital expenditures $ 29,902 $ 40,874 $ 17,684 $ 36,248 $ 8,844 $ 3,182 $ 136,734 (1) Excludes amortization (2) Segment assets include receivables, prepaids, inventories, property, plant and equipment, and mineral interests Year ended December 31, 2016 Palmarejo Rochester Kensington Wharf Other Total Revenue Metal sales $ 141,273 $ 139,945 $ 146,593 $ 136,678 $ 4,128 $ 568,617 Royalties — — — — 3,280 3,280 141,273 139,945 146,593 136,678 7,408 571,897 Costs and Expenses Costs applicable to sales (1) 80,820 89,726 96,731 66,379 1,719 335,375 Amortization 36,599 21,838 34,787 20,621 2,683 116,528 Exploration 5,063 841 3,487 2 3,537 12,930 Write-downs — — — — 4,446 4,446 Other operating expenses 1,213 2,801 1,038 2,238 36,396 43,686 Other income (expense) Loss on debt extinguishment — — — — (21,365 ) (21,365 ) Fair value adjustments, net (5,814 ) (4,133 ) — — (1,634 ) (11,581 ) Interest expense, net (1,187 ) (664 ) (128 ) (69 ) (34,848 ) (36,896 ) Other, net (12,125 ) (3,859 ) (25 ) 17 16,090 98 Income and mining tax (expense) benefit 45,085 (2,785 ) — (4,293 ) (4,760 ) 33,247 Income (loss) from continuing operations $ 43,537 $ 13,298 $ 10,397 $ 43,093 $ (87,890 ) $ 22,435 Income (loss) from discontinued operations $ — $ — $ — $ — $ 32,917 $ 32,917 Segment assets (2) $ 436,642 $ 219,009 $ 199,232 $ 105,901 $ 84,938 $ 1,045,722 Capital expenditures $ 35,810 $ 16,446 $ 36,826 $ 4,812 $ 488 $ 94,382 (1) Excludes amortization (2) Segment assets include receivables, prepaids, inventories, property, plant and equipment, and mineral interests Year ended December 31, 2015 Palmarejo Rochester Kensington Wharf Other Total Revenue Metal sales 169,133 143,930 148,710 84,052 8,732 $ 554,557 Royalties — — — — 6,850 6,850 169,133 143,930 148,710 84,052 15,582 561,407 Costs and Expenses Costs applicable to sales (1) 138,476 103,994 105,640 52,197 3,520 403,827 Amortization 32,423 23,906 42,240 16,378 11,006 125,953 Exploration 4,533 1,324 2,596 134 2,934 11,521 Write-downs 224,507 — — — 22,118 246,625 Other operating expenses 1,293 2,948 1,301 1,717 41,581 48,840 Other income (expense) Loss on debt extinguishment — — — — 15,916 15,916 Fair value adjustments, net 3,160 818 — — 1,224 5,202 Interest expense, net (4,269 ) (748 ) (218 ) — (39,743 ) (44,978 ) Other, net (10,968 ) (13 ) 7 143 (6,836 ) (17,667 ) Income and mining tax (expense) benefit 37,597 (1,497 ) — (857 ) (6,168 ) 29,075 Income (loss) from continuing operations (206,579 ) 10,318 (3,278 ) 12,912 (101,184 ) (287,811 ) Income (loss) from discontinued operations — — — — (79,372 ) (79,372 ) Segment assets (2) 406,648 190,714 197,873 113,305 103,629 1,012,169 Capital expenditures 35,991 25,330 23,834 3,211 607 88,973 (1) Excludes amortization (2) Segment assets include receivables, prepaids, inventories, property, plant and equipment, and mineral interests Assets December 31, 2017 December 31, 2016 Total assets for reportable segments $ 1,344,553 $ 1,045,722 Cash and cash equivalents 192,032 118,312 Other assets 164,590 154,875 Total consolidated assets $ 1,701,175 $ 1,318,909 Geographic Information Long-Lived Assets December 31, 2017 December 31, 2016 Mexico $ 370,188 $ 397,697 United States 377,768 338,897 Canada 331,440 — Argentina 229 10,228 Other 4,681 8,547 Total $ 1,084,306 $ 755,369 Revenue Year ended December 31, 2017 2016 2015 United States $ 433,050 $ 423,216 $ 376,692 Mexico 274,809 142,198 171,911 Australia 1,739 4,128 8,732 Other — 2,355 4,072 Total $ 709,598 $ 571,897 $ 561,407 The Company's doré, as well as the concentrate product produced by the Wharf mine, is refined into gold and silver bullion according to benchmark standards set by the LBMA, which regulates the acceptable requirements for bullion traded in the London precious metals markets. The Company then sells its silver and gold bullion to multi-national banks, bullion trading houses, and refiners across the globe. The Company has eight trading counterparties at December 31, 2017. The Company's sales of doré or concentrate product produced by the Palmarejo, Rochester, and Wharf mines amounted to approximately 78% , 74% , and 72% of total metal sales for the years ended December 31, 2017, 2016, and 2015, respectively. Generally, the loss of a single bullion trading counterparty would not adversely affect the Company due to the liquidity of the markets and availability of alternative trading counterparties. The Company's gold concentrate products from the Kensington mine are primarily sold to one smelter under a purchase and sale agreement, and the smelter pays the Company for the metals recovered from the concentrates. The Company’s sales of concentrate produced by the Kensington mine amounted to approximately 22% , 26% , and 27% of total metal sales for the years ended December 31, 2017, 2016, and 2015, respectively. While the loss of a smelter may have a material adverse effect if alternate smelters are not available or if the failure to engage a new smelter results in a delay in the sale or purchase of Kensington concentrate, the Company believes that there is sufficient global capacity available to address the loss of a smelter. The following table indicates customers that represent 10% or more of total sales of metal for at least one of the years December 31, 2017, 2016, and 2015 (in millions): Year ended December 31, Customer 2017 2016 2015 Segments reporting revenue China National Gold $ 137.5 $ 126.6 $ 126.2 Kensington Republic Metal Corporation 132.4 47.3 0.6 Palmarejo,Wharf Asahi (formerly Johnson Matthey) 124.1 62.6 84.2 Palmarejo, Wharf, Rochester Techemet Metal Trading 104.8 40.7 — Rochester, Wharf TD Securities — 15.5 81.3 Palmarejo, Rochester INTL Commodities 9.6 76.6 33.1 Palmarejo, Rochester, Wharf Mitsui & Co. — — 137.7 Palmarejo, Rochester

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
STOCK-BASED COMPENSATION	STOCK-BASED COMPENSATION The Company has stock incentive plans for executives and eligible employees. Stock awards include stock options, restricted stock, and performance shares. Stock-based compensation expense for the years ended December 31, 2017, 2016, and 2015 was $10.5 million , $9.7 million and $9.3 million , respectively. At December 31, 2017, there was $6.1 million of unrecognized stock-based compensation cost which is expected to be recognized over a weighted-average remaining vesting period of 1.4 years. Stock Options and Stock Appreciation Rights Stock options and stock appreciation rights (SARs) granted under the Company’s incentive plans vest over three years and are exercisable over a period not to exceed ten years from the grant date. The exercise price of stock options is equal to the fair market value of the shares on the date of the grant. The value of each stock option award is estimated using the Black-Scholes option pricing model. Stock options are accounted for as equity awards and SARs are accounted for as liability awards and remeasured at each reporting date. SARs, when vested, provide the participant the right to receive cash equal to the excess of the market price of the shares over the exercise price when exercised. The following table sets forth the weighted average fair value of stock options and the assumptions used to estimate the fair value of the stock options using the Black-Scholes option valuation model: 2017 2016 2015 Weighted average fair value of stock options granted $ 3.91 $ 1.06 $ 2.65 Volatility 67.07 % 61.75 % 55.71 % Expected life in years 4.00 3.99 4.75 Risk-free interest rate 1.69 % 1.50 % 1.51 % Dividend yield — — — The following table summarizes stock option and SAR activity for the years ended December 31, 2017, 2016, and 2015: Stock Options SARs Shares Weighted Average Exercise Price Shares Weighted Outstanding at December 31, 2014 598,346 $ 16.26 46,572 $ 14.06 Granted 310,028 5.57 — — Canceled/forfeited (238,365 ) 12.69 — — Outstanding at December 31, 2015 670,009 12.58 46,572 14.06 Granted 183,251 2.19 — — Exercised (170,897 ) 7.81 — — Canceled/forfeited (25,752 ) 16.76 (4,420 ) 13.31 Outstanding at December 31, 2016 656,611 10.76 42,152 14.14 Granted 14,820 7.60 — — Exercised (26,966 ) 3.28 — — Canceled/forfeited (27,019 ) 21.88 — — Outstanding at December 31, 2017 617,446 $ 10.53 42,152 $ 14.14 The following table summarizes outstanding stock options as of December 31, 2017. Range of Exercise Price Number Outstanding Weighted Average Exercise Price Weighted Average Remaining Contractual Life (Years) Aggregate Intrinsic Value (in thousands) $ 0.00-$10.00 434,520 $ 5.45 7.24 $10.00-$20.00 47,051 12.73 5.68 $20.00-$30.00 133,692 25.64 4.33 $30.00-$40.00 — — 0.00 $40.00-$50.00 2,183 48.50 0.03 Outstanding 617,446 $ 10.53 6.47 $ 1,127 Vested and expected to vest 601,545 $ 10.71 6.42 $ 1,065 Exercisable 427,730 $ 13.62 5.81 $ 377 At December 31, 2017, there was $0.1 million of unrecognized compensation cost related to non-vested stock options to be recognized over a weighted average period of 1.0 year. The total intrinsic value of options exercised for the year ended December 31, 2017 was $0.2 million . Cash received from options exercised for the year ended December 31, 2017 was $0.1 million for which there was no related tax benefit. The grant date fair value for stock options vested during the years ended December 31, 2017, 2016, and 2015 was $0.5 million , $1.0 million and $1.4 million , respectively. Restricted Stock Restricted stock granted under the Company’s incentive plans are accounted for based on the market value of the underlying shares on the date of grant and vest in equal installments annually over three years. Restricted stock awards are accounted for as equity awards. Holders of restricted stock are entitled to vote the shares and to receive any dividends declared on the shares. The following table summarizes restricted stock activity for the years ended December 31, 2017, 2016, and 2015 : Restricted Stock Number of Shares Weighted Average Grant Date Fair Value Outstanding at December 31, 2014 901,999 $ 12.19 Granted 1,180,384 5.49 Vested (317,122 ) 13.38 Cancelled/Forfeited (257,849 ) 7.59 Outstanding at December 31, 2015 1,507,412 7.49 Granted 1,768,746 3.72 Vested (681,829 ) 8.51 Cancelled/Forfeited (160,414 ) 7.16 Outstanding at December 31, 2016 2,433,915 4.48 Granted 799,165 8.78 Vested (1,023,708 ) 5.14 Cancelled/Forfeited (53,527 ) 5.90 Outstanding at December 31, 2017 2,155,845 $ 5.72 At December 31, 2017, there was $3.5 million of unrecognized compensation cost related to restricted stock awards to be recognized over a weighted-average period of 1.3 years. Performance Shares Performance shares granted under the Company’s incentive plans are accounted for at fair value using a Monte Carlo simulation valuation model on the date of grant. Performance share awards are accounted for as equity awards. The performance shares vest at the end of a three -year service period if relative stockholder return and internal performance metrics are met. The existence of a market condition requires recognition of compensation cost for the performance share awards over the requisite period regardless of whether the relative stockholder return metric is met. The following table summarizes performance shares activity for the years ended December 31, 2017, 2016, and 2015 : Performance Shares Number of Shares Weighted Average Grant Date Fair Value Outstanding at December 31, 2014 516,830 $ 17.61 Granted 809,293 6.97 Cancelled/Forfeited (190,988 ) 15.62 Outstanding at December 31, 2015 1,135,135 10.35 Granted 1,437,077 1.79 Cancelled/Forfeited (199,580 ) 17.98 Outstanding at December 31, 2016 2,372,632 4.53 Granted 316,213 11.58 Vested (66,696 ) 14.18 Cancelled/Forfeited (253,868 ) 11.56 Outstanding at December 31, 2017 2,368,281 $ 4.44 At December 31, 2017, there was $2.6 million of unrecognized compensation cost related to performance shares to be recognized over a weighted average period of 1.6 years.

Income and Mining Taxes

Income and Mining Taxes	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
INCOME AND MINING TAXES	INCOME AND MINING TAXES The components of Income (loss) before income taxes are below: Year ended December 31, In thousands 2017 2016 2015 United States $ 10,099 $ (13,299 ) $ (44,101 ) Foreign 29,824 2,487 (272,785 ) Total $ 39,923 $ (10,812 ) $ (316,886 ) The components of the consolidated Income and mining tax (expense) benefit from continuing operations are below: Year ended December 31, In thousands 2017 2016 2015 Current: United States $ 1,428 $ — $ 49 United States — State mining taxes (6,016 ) (7,826 ) (4,305 ) United States — Foreign withholding tax (8,466 ) (1,838 ) — Argentina 55 10 715 Australia — 14 130 Canada 876 (1,841 ) (516 ) Mexico (30,763 ) (9,581 ) (476 ) Deferred: United States 6,367 (1,610 ) (564 ) United States — State mining taxes 1,052 748 1,952 Argentina 1,531 115 (1,197 ) Australia — (1,638 ) 3,223 Canada 104 1,338 2,875 Mexico 4,805 55,383 27,189 New Zealand 29 (27 ) — Income tax (expense) benefit $ (28,998 ) $ 33,247 $ 29,075 The Company’s effective tax rate is impacted by recurring items, such as foreign exchange rates on deferred tax balances, mining tax expense, full valuation allowance on the deferred tax assets relating to losses in the United States and certain foreign jurisdictions, and uncertain tax positions. During the year ended December 31, 2016, the Company completed a legal entity reorganization to integrate recent acquisitions resulting in a valuation allowance release of $40.8 million . In addition, the Company’s consolidated effective income and mining tax rate is a function of the combined effective tax rates and foreign exchange rates in the jurisdictions in which it operates. Variations in the jurisdictional mix of income and loss and foreign exchange rates result in significant fluctuations in our consolidated effective tax rate. A reconciliation of the Company’s effective tax rate with the federal statutory tax rate for the periods indicated is below: Year ended December 31, In thousands 2017 2016 2015 Income and mining tax (expense) benefit at statutory rate $ (14,037 ) $ 3,718 $ 110,848 State tax provision from continuing operations 26 336 (2,075 ) Change in valuation allowance 86,712 40,517 (70,457 ) Effect of tax legislation (88,174 ) — — Percentage depletion 703 983 — Uncertain tax positions 2,596 (8,829 ) 170 U.S. and foreign permanent differences 2,348 (2,652 ) (3,376 ) Mineral interest related — — (18,318 ) Foreign exchange rates (14,180 ) 19,701 21,461 Foreign inflation and indexing (2,346 ) (670 ) 1,117 Foreign tax rate differences 2,929 120 (14,062 ) Mining, foreign withholding, and other taxes (11,274 ) (11,052 ) 8,141 Other, net 5,699 — (4,374 ) Legal entity reorganization — (8,925 ) — Income and mining tax (expense) benefit $ (28,998 ) $ 33,247 $ 29,075 At December 31, 2017 and 2016, the significant components of the Company’s deferred tax assets and liabilities are below: Year ended December 31, In thousands 2017 2016 Deferred tax liabilities: Mineral properties $ 143,773 $ 60,199 Unrealized foreign currency loss and other 1,748 — Inventory 8,258 4,629 Royalty and other long-term debt — 8,685 $ 153,779 $ 73,513 Deferred tax assets: Net operating loss carryforwards $ 155,512 $ 186,005 Property, plant, and equipment 60,286 60,828 Mining Royalty Tax 11,797 6,359 Capital loss carryforwards 19,881 6,770 Asset retirement obligation 25,309 26,951 Foreign subsidiaries - unremitted earnings 1,842 3,685 Unrealized foreign currency loss and other 218 7,413 Accrued expenses 13,512 15,193 Tax credit carryforwards 45,277 29,227 333,634 342,431 Valuation allowance (282,868 ) (338,539 ) 50,766 3,892 Net deferred tax liabilities $ 103,013 $ 69,621 A valuation allowance is provided for deferred tax assets for which it is more likely than not that the related tax benefits will not be realized. The Company analyzes its deferred tax assets and, if it is determined that the Company will not realize all or a portion of its deferred tax assets, it will record or increase a valuation allowance. Conversely, if it is determined that the Company will ultimately be more likely than not able to realize all or a portion of the related benefits for which a valuation allowance has been provided, all or a portion of the related valuation allowance will be reduced. There are a number of factors that impact the Company’s ability to realize its deferred tax assets. For additional information, please see the section titled “Risk Factors” included in Item 1A. Based upon this analysis, the Company has recorded valuation allowances as follows: Year ended December 31, In thousands 2017 2016 U.S. $ 235,395 $ 292,446 Argentina 3,914 6,197 Canada 2,455 1,296 Mexico 17,087 13,033 New Zealand 23,792 23,717 Other 225 1,850 $ 282,868 $ 338,539 The Company has the following tax attribute carryforwards at December 31, 2017, by jurisdiction: In thousands U.S. Canada Mexico New Zealand Other Total Regular net operating losses $ 369,973 $ 39,833 $ 56,958 $ 86,165 $ 12,436 $ 565,365 Expiration years 2019-2037 2029-2036 2017-2026 Indefinite 2017-2021 Alternative minimum tax net operating losses 179,882 — — — — 179,882 Capital losses 72,772 14,018 — — — 86,790 Alternative minimum tax credits 1,654 — — — — 1,654 Foreign tax credits 41,730 — — — — 41,730 The majority of the U.S. capital losses will expire from 2020 through 2022. Alternative minimum tax credits do not expire and foreign tax credits expire if unused beginning in 2019. The Company intends to indefinitely reinvest earnings from Mexican operations. A reconciliation of the beginning and ending amount related to unrecognized tax benefits is below (in thousands): Unrecognized tax benefits at December 31, 2015 $ 2,131 Gross increase to current period tax positions 239 Gross increase to prior period tax positions 5,187 Reductions in unrecognized tax benefits resulting from a lapse of the applicable statute of limitations (400 ) Unrecognized tax benefits at December 31, 2016 $ 7,157 Gross increase to current period tax positions 202 Gross increase to prior period tax positions 316 Reductions in unrecognized tax benefits resulting from a lapse of the applicable statute of limitations (2,351 ) Unrecognized tax benefits at December 31, 2017 $ 5,324 At December 31, 2017, 2016, and 2015, $4.3 million , $5.1 million , and $1.2 million , respectively, of these gross unrecognized benefits would, if recognized, decrease the Company’s effective tax rate. The Company operates in numerous countries around the world and is subject to, and pays annual income taxes under, the various income tax regimes in the countries in which it operates. The Company has historically filed, and continues to file, all required income tax returns and paid the taxes reasonably determined to be due. The tax rules and regulations in many countries are highly complex and subject to interpretation. From time to time, the Company is subject to a review of its historic income tax filings and, in connection with such reviews, disputes can arise with the taxing authorities over the interpretation or application of certain rules to the Company’s business conducted within the country involved. The Company files income tax returns in various U.S. federal and state jurisdictions, in all identified foreign jurisdictions, and various others. The statute of limitations remains open from 2014 for the US federal jurisdiction and from 2008 for certain other foreign jurisdictions. As a result of statutes of limitations that will begin to expire within the next 12 months in various jurisdictions and possible settlement of audit-related issues with taxing authorities in various jurisdictions with respect to which none of these issues are individually significant, the Company believes that it is reasonably possible that the total amount of its unrecognized income tax liability will decrease between $1.5 million and $2.5 million in the next 12 months. The Company classifies interest and penalties associated with uncertain tax positions as a component of income tax expense and recognized interest and penalties of $4.8 million , $5.5 million , and $0.7 million at December 31, 2017, 2016, and 2015, respectively. On December 22, 2017, the United States (“U.S.”) enacted significant changes to U.S. tax law following the passage and signing of H.R.1, “An Act to Provide for Reconciliation Pursuant to Titles II and V of the Concurrent Resolution on the Budget for Fiscal Year 2018” which makes widespread changes to the Internal Revenue Code, including, among other items, a reduction in the federal corporate tax rate to 21%, effective January 1, 2018. The Company is subject to the provisions of the Financial Accounting Standards Board (“FASB”) ASC 740-10, Income Taxes, which requires that the effect on deferred tax assets and liabilities of a change in tax rates be recognized in the period the tax rate change was enacted. The carrying value of our U.S. deferred taxes is determined by the enacted U.S. corporate income tax rate. Consequently, the reduction in the U.S. corporate income tax rate impacts the carrying value of our deferred tax assets. Under the new corporate income tax rate of 21%, the U.S. net deferred tax asset position will decrease as will the related valuation allowance. The net effect of the tax reform enactment on the financial statements is minimal. While there are certain aspects of the new tax law that will not impact the Company based on its tax attributes, such as the one-time transition tax on unremitted foreign earnings; there are other aspects of the law, which could have a positive impact on the Company’s future U.S. income tax expense, including the elimination of the U.S. corporate alternative minimum tax. However, uncertainty regarding the impact of tax reform remains, as a result of factors including future regulatory and rulemaking processes, the prospects of additional corrective or supplemental legislation, potential trade or other litigation, and other factors.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS Year ended December 31, In thousands 2017 2016 2015 Rochester royalty obligation $ (864 ) $ (4,133 ) $ 818 Palmarejo royalty obligation embedded derivative — (5,866 ) 3,101 Silver and gold options — (1,582 ) 1,283 Fair value adjustments, net $ (864 ) $ (11,581 ) $ 5,202 Accounting standards establish a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1), secondary priority to quoted prices in inactive markets or observable inputs (Level 2), and the lowest priority to unobservable inputs (Level 3). The following table presents the Company’s financial assets and liabilities measured at fair value on a recurring basis (at least annually) by level within the fair value hierarchy. Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement: Fair Value at December 31, 2017 In thousands Total Level 1 Level 2 Level 3 Assets: Equity and debt securities $ 34,837 $ 27,946 $ — $ 6,891 Other derivative instruments, net 251 — 251 — $ 35,088 $ 27,946 $ 251 $ 6,891 Liabilities: Silvertip contingent consideration $ 47,965 $ — $ — $ 47,965 Other derivative instruments, net 222 — 222 — $ 48,187 $ — $ 222 $ 47,965 Fair Value at December 31, 2016 In thousands Total Level 1 Level 2 Level 3 Assets: Equity securities $ 4,488 $ 4,209 $ — $ 279 $ 4,488 $ 4,209 $ — $ 279 Liabilities: Rochester royalty obligation $ 9,287 $ — $ — $ 9,287 Other derivative instruments, net 762 — 762 — $ 10,049 $ — $ 762 $ 9,287 The Company’s investments in equity securities are recorded at fair market value in the financial statements based primarily on quoted market prices. Such instruments are classified within Level 1 of the fair value hierarchy. Quoted market prices are not available for certain debt and equity securities; these securities are valued using pricing models, which require the use of observable and unobservable inputs, and are classified within Level 3 of the fair value hierarchy. The Company’s other derivative instruments, net, relate to concentrate and certain doré sales contracts valued using pricing models, which require inputs that are derived from observable market data, including contractual terms, forward market prices, yield curves, credit spreads, and other unobservable inputs. The model inputs can generally be verified and do not involve significant management judgment. Such instruments are classified within Level 2 of the fair value hierarchy. In May 2017, the Company repurchased the Rochester royalty obligation for $5.0 million , resulting in a pre-tax gain of $2.3 million , which is included in Other, net . The fair value of the Rochester royalty obligation was estimated based on observable market data including contractual terms, forward silver and gold prices, yield curves, and credit spreads, as well as the Company’s current mine plan which is considered a significant unobservable input. Therefore, the Company historically classified this obligation as a Level 3 financial liability. In July 2017, the Company sold the Endeavor Silver Stream and remaining non-core royalties to Metalla Royalty & Streaming Ltd. (“Metalla”) for total consideration of $13.0 million , including a $6.7 million convertible debenture. The convertible debenture matures June 30, 2027 , bears interest at a rate of 5% payable semi-annually, and is convertible into Metalla shares in connection with future equity financings or asset acquisitions by Metalla at the then-current price to maintain the Company’s approximate 19.9% ownership. The fair value of the convertible debenture is estimated based on observable market data including yield curves and credit spreads. Therefore, the Company classifies the convertible debenture in Level 3 of the fair value hierarchy. In October 2017 the Company acquired the Silvertip mine from JDS Silver. The consideration for the Silvertip mine includes two $25.0 million contingent payments, which are payable in cash and common stock upon reaching a future resource declaration milestone in 2019 and a future permitting milestone, respectively. The fair value of the Silvertip contingent consideration is estimated based on an estimated discount rate of 2.5% for the contingent permitting payment and 2.9% for the contingent resource declaration payment and is classified within Level 3 of the fair value hierarchy. No assets or liabilities were transferred between fair value levels in the year ended December 31, 2017. The following tables present the changes in the fair value of the Company's Level 3 financial assets and liabilities for the years ended December 31, 2017 and 2016: Year Ended December 31, 2017 In thousands Balance at the beginning of the period Additions Revaluation Settlements Gain on settlement Balance at the end of the period Assets: Equity and debt securities $ 279 $ 6,677 $ (65 ) $ — $ — $ 6,891 Liabilities: Rochester royalty obligation $ 9,287 $ — $ 864 $ (7,819 ) $ (2,332 ) $ — Silvertip contingent consideration $ — $ 47,705 $ 260 $ — $ — $ 47,965 Year Ended December 31, 2016 In thousands Balance at the beginning of the period Additions Revaluation Settlements Gain on settlement Balance at the end of the period Assets: Equity and debt securities $ 10 $ — $ 272 $ (3 ) $ — $ 279 Liabilities: Palmarejo royalty obligation embedded derivative $ 4,957 $ — $ 5,866 $ (10,823 ) $ — $ — Rochester royalty obligation $ 9,593 $ — $ 4,133 $ (4,439 ) $ — $ 9,287 The fair value of financial assets and liabilities carried at book value in the financial statements at December 31, 2017 and December 31, 2016 is presented in the following table: December 31, 2017 In thousands Book Value Fair Value Level 1 Level 2 Level 3 Liabilities: 5.875% Senior Notes due 2024 (1) $ 245,088 $ 243,913 $ — $ 243,913 $ — Revolving Credit Facility (2) $ 100,000 $ 100,000 $ — $ 100,000 $ — (1) Net of unamortized debt issuance costs of $4.9 million . (2) Unamortized debt issuance costs of $1.9 million at December 31, 2017 included in Other Non-Current Assets . December 31, 2016 In thousands Book Value Fair Value Level 1 Level 2 Level 3 Liabilities: 7.875% Senior Notes due 2021 (1) $ 175,991 $ 184,373 $ — $ 184,373 $ — (1) Net of unamortized debt issuance costs and premium received of $2.0 million . The fair value of the 5.875% Senior Notes due 2024 (the “2024 Senior Notes”) and the 7.875% Senior Notes due 2021 (the “2021 Senior Notes”) were estimated using quoted market prices. The fair value of the Revolving Credit Facility approximates book value as the liability is secured, has a variable interest rate, and lacks significant credit concerns.

Reclamation

Reclamation	12 Months Ended
	Dec. 31, 2017
Asset Retirement Obligation Disclosure [Abstract]
RECLAMATION	RECLAMATION Reclamation and mine closure costs are based principally on legal and regulatory requirements. Management estimates costs associated with reclamation of mining properties. On an ongoing basis, management evaluates its estimates and assumptions, and future expenditures could differ from current estimates. Changes to the Company’s asset retirement obligations for operating sites are as follows: Year ended December 31, In thousands 2017 2016 Asset retirement obligation - Beginning $ 86,754 $ 71,763 Accretion 8,769 7,030 Additions and changes in estimates 25,370 9,389 Settlements (2,094 ) (1,428 ) Asset retirement obligation - Ending $ 118,799 $ 86,754 The Company has accrued $2.0 million and $1.9 million at December 31, 2017 and December 31, 2016 , respectively, for reclamation liabilities related to former mining activities, which are included in Reclamation. The Company increased the reclamation liability at Palmarejo by $17.1 million due to the inclusion of the waste rock facility closure plan and tailings facility expansion and at Rochester by $1.2 million at December 31, 2017 due to leach pad expansion. The Company also recorded a $7.1 million reclamation liability in conjunction with the Silvertip acquisition.

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE FINANCIAL INSTRUMENTS	DERIVATIVE FINANCIAL INSTRUMENTS Palmarejo Gold Production Royalty In January 2009, the Company's subsidiary, Coeur Mexicana, S.A. de C.V. (“Coeur Mexicana”), entered into a gold production royalty agreement with a subsidiary of Franco-Nevada Corporation that covered 50% of the life of mine production from the Palmarejo mine and legacy adjacent properties. The royalty transaction included a minimum obligation of 4,167 gold ounces per month and terminated upon delivery of 400,000 gold ounces, which occurred in July 2016. The price volatility associated with the minimum royalty obligation was considered an embedded derivative. The Company was required to recognize the change in fair value of the remaining minimum obligation due to changing gold prices. For the years ended December 31, 2016 and 2015, the mark-to-market adjustment associated with the change were losses of $5.9 million and gains of $17.0 million , respectively. Payments on the royalty obligation decreased the carrying amount of the minimum obligation and the derivative liability. For the years ended December 31, 2016 and 2015, realized losses on settlement of the liabilities were $10.8 million and $13.9 million , respectively. The mark-to-market adjustments and realized losses are included in Fair value adjustments, net . Provisional Silver and Gold Sales The Company enters into sales contracts with third-party smelters and refiners which, in some cases, provide for a provisional payment based upon preliminary assays and quoted metal prices. The provisionally priced sales contracts contain an embedded derivative that is required to be separated from the host contract for accounting purposes. The host contract is the receivable recorded at the forward price at the time of sale. The embedded derivatives do not qualify for hedge accounting and are marked to market through earnings each period until final settlement. Changes in silver and gold prices resulted in provisional pricing mark-to-market gains of $0.6 million , losses of $0.2 million , and gains of $0.2 million in the years ended December 31, 2017, 2016, and 2015 , respectively. At December 31, 2017 , the Company had the following provisionally priced sales that settle as follows: In thousands except average prices and notional ounces 2018 Thereafter Provisional silver sales contracts $ 383 $ — Average silver price $ 16.61 $ — Notional ounces 23,065 — Provisional gold sales contracts $ 53,214 $ — Average gold price $ 1,283 $ — Notional ounces 41,476 — Silver and Gold Options During the years ended December 31, 2016 and 2015, the Company had realized losses of $1.6 million and realized gains of $1.3 million , respectively, from settled option contracts. At December 31, 2017 , the Company had no outstanding gold and silver options contracts. The following summarizes the classification of the fair value of the derivative instruments: December 31, 2017 In thousands Prepaid expenses and other Accrued liabilities and other Current portion of royalty obligation Non-current portion of royalty obligation Provisional silver and gold sales contracts $ 251 $ 222 $ — $ — December 31, 2016 In thousands Prepaid expenses and other Accrued liabilities and other Current portion of royalty obligation Non-current portion of royalty obligation Provisional silver and gold sales contracts $ — $ 762 $ — $ — The following represent mark-to-market gains (losses) on derivative instruments for the years ended December 31, 2017, 2016, and 2015 , respectively (in thousands): Year ended December 31, Financial statement line Derivative 2017 2016 2015 Revenue Provisional silver and gold sales contracts $ 631 $ (239 ) $ 214 Fair value adjustments, net Palmarejo gold production royalty — (5,866 ) 3,101 Fair value adjustments, net Silver and gold options — (1,582 ) 1,283 $ 631 $ (7,687 ) $ 4,598 Credit Risk The credit risk exposure related to any derivative instrument is limited to the unrealized gains, if any, on outstanding contracts based on current market prices. To reduce counter-party credit exposure, the Company enters into contracts with institutions management deems credit-worthy and limits credit exposure to each institution. The Company does not anticipate non-performance by any of its counterparties.

Acquisitions (Notes)

Acquisitions (Notes)	12 Months Ended
	Dec. 31, 2017
Business Combinations [Abstract]
Acquisitions	ACQUISITIONS In October 2017, the Company completed the acquisition of JDS Silver Holdings, Ltd. and its wholly-owned subsidiary JDS Silver Inc. (collectively, “JDS Silver”), which owns the underground Silvertip silver-zinc-lead mine in northern British Columbia, Canada. JDS Silver was purchased for approximately $156.2 million in cash and $36.0 million in Coeur common stock. In addition, the Company recorded $47.7 million of contingent consideration payable in cash and common stock upon reaching future permitting and resource declaration milestones. The cash consideration was funded with $100.0 million of borrowing under the Facility (as defined below) and cash on hand. Upon closing, the Company issued approximately 4.2 million Coeur shares to former shareholders of JDS Silver. The acquisition aligns with the Company’s strategic shift to a North America-focused mining portfolio. The transaction was accounted for as a business combination, which requires that assets acquired and liabilities assumed be recognized at their respective fair values at the acquisition date. The Company incurred $3.3 million of acquisition costs, which are included in Pre-development, reclamation, and other on the Consolidated Statements of Comprehensive Income (Loss). The acquisition is not significant to the Company’s results of operations, individually or in the aggregate, because the Silvertip mine is in pre-production. As there is no significant differences from the Company’s historical results of operations, no pro forma financial information is provided. In accordance with the acquisition method of accounting, the purchase price of Silvertip has been allocated to the acquired assets and assumed liabilities based on their estimated fair values on the acquisition date. The fair value estimates were based on, but not limited to, quoted market prices, where available; current replacement cost for similar capacity for certain fixed assets; and appropriate discount rates. The excess of the total consideration over the estimated fair value of the amounts initially assigned to the identifiable acquired assets and liabilities assumed has been recorded as mineral interest. The allocation of purchase price to the acquired assets and liabilities assumed is preliminary as of December 31, 2017 and subsequent adjustments may result in changes to mineral interest and other carrying amounts initially assigned based on the preliminary fair value analysis. The principal remaining items to be valued are property, plant and equipment and mining properties, which will be finalized as management continues to review the valuation methodologies used to estimate the fair value of these assets. The preliminary purchase price allocation is as follows (in thousands): Common shares issued (4,191,679 at $8.59) $ 36,007 Cash 156,247 Contingent consideration 47,705 Total purchase price $ 239,959 Assets: Receivables and other assets $ 9,881 Property, plant, and equipment 29,943 Mining properties, net 288,464 328,288 Liabilities: Accounts payable and accrued liabilities 13,077 Asset retirement obligation 6,982 Debt and capital lease 20,149 Deferred income taxes 48,121 88,329 Net assets acquired $ 239,959 In April 2015, the Company completed the acquisition of Paramount, which held mineral claims adjacent to the Company's Palmarejo mine, including a continuation of the Independencia deposit. Upon closing, Paramount became a wholly-owned subsidiary of the Company, and each issued and outstanding share of Paramount common stock was converted into 0.2016 shares of Coeur common stock, with cash paid in lieu of fractional shares. Immediately prior to completion of the acquisition, Paramount spun off to its existing stockholders a separate, publicly-traded company, Paramount Gold Nevada Corp. (“SpinCo”), which owns the Sleeper Gold Project and other assets in Nevada. SpinCo was capitalized with $8.5 million in cash contributed by Coeur, which amount has been included in the total consideration paid for the acquisition of Paramount. The Company also paid $1.5 million to acquire 4.9% of the newly issued and outstanding shares of SpinCo. The transaction was accounted for as an asset acquisition, as Paramount is an exploration stage project, which requires that the total purchase price be allocated to the assets acquired and liabilities assumed based on their relative fair values. The purchase price and acquired assets and liabilities were as follows (in thousands except share data): Common shares issued (32,667,327 at $5.78) $ 188,817 Cash 8,530 Transaction advisory fees and other acquisition costs 4,020 Total purchase price $ 201,367 Total assets acquired $ 307,193 Total liabilities assumed 105,826 Net assets acquired $ 201,367 The assets acquired and liabilities assumed have been assigned to the Palmarejo reportable operating segment. In February 2015, the Company completed its acquisition of the Wharf gold mine located near Lead, South Dakota, from a subsidiary of Goldcorp in exchange for $99.4 million in cash. The transaction was accounted for as a business combination which requires that assets acquired and liabilities assumed be recognized at their respective fair values at the acquisition date. The Company incurred $2.1 million of acquisition costs, which are included in Pre-development, reclamation, and other on the Consolidated Statements of Comprehensive Income (Loss). The purchase price allocation was based on the fair value of acquired assets and liabilities as follows (in thousands): Total assets acquired 133,269 Total liabilities assumed 33,873 Net assets acquired $ 99,396

Retirement Savings Plan

Retirement Savings Plan	12 Months Ended
	Dec. 31, 2017
Postemployment Benefits [Abstract]
RETIREMENT SAVINGS PLAN	RETIREMENT SAVINGS PLAN The Company has a 401(k) retirement savings plan that covers all eligible U.S. employees. Eligible employees may elect to contribute up to 75% of base salary, subject to ERISA limitations. The Company generally makes matching contributions equal to the employee’s contribution up to 4% of the employee’s salary. The Company may also provide an additional contribution based on an eligible employee’s salary. Total plan expenses recognized for the years ended December 31, 2017, 2016, and 2015 were $7.3 million , $5.4 million , and $2.9 million , respectively, due to additional Company contributions. In addition, the Company has a deferred compensation plan for employees whose benefits under the 401(k) plan are limited by federal regulations.

Other, Net

Other, Net	12 Months Ended
	Dec. 31, 2017
Other Income and Expenses [Abstract]
OTHER, NET	OTHER, NET Other, net consists of the following: Year ended December 31, In thousands 2017 2016 2015 Foreign exchange gain (loss) $ 1,281 $ (11,456 ) $ (16,021 ) Gain (loss) on sale of assets and investments (1,037 ) 11,334 (352 ) Gain on sale of the Joaquin project 21,138 — — Gain on repurchase of the Rochester royalty obligation 2,332 — — Gain on sale of Endeavor stream and other royalties 1,036 — — Impairment of equity securities (426 ) (703 ) (2,346 ) Other 2,319 923 1,052 Other, net $ 26,643 $ 98 $ (17,667 )

Assets and Liabilities Held For

Assets and Liabilities Held For Sale (Notes)	12 Months Ended
	Dec. 31, 2017
Discontinued Operations and Disposal Groups [Abstract]
Assets and Liabilities Held For Sale	ASSETS AND LIABILITIES HELD FOR SALE On December 22, 2017, the Company and certain of its subsidiaries entered into a definitive agreement (the “Agreement”) to sell all of the outstanding capital stock of Manquiri, which is the owner and operator of the San Bartolomé mine and processing facility (the “Transaction”). The Agreement provides that Manquiri will be sold to Argentum Investments, AB (“Argentum”), a privately-held Swedish company owned by a group of Mexican individuals with extensive mining experience in Latin America. The transaction is expected to close in early 2018, subject to customary closing conditions. Results of operations for the year ended December 31, 2017 include a $3.4 million write-down of assets to expected realizable value. The Company considered the terms of the Agreement to determine the expected realizable value. Under the Agreement, affiliates of Argentum will acquire Manquiri from Coeur and its subsidiaries for the following consideration: • 2.0% net smelter returns royalty (the “NSR”) payable to Coeur on all metals processed through the San Bartolomé Mine’s processing facility, commencing on the first anniversary of the closing of the Transaction. Coeur estimates the value of this NSR to be approximately $5.0 million . • Approximately $13.0 million of pre-closing value added tax refunds that will be collected or received by Manquiri in the future will be paid to Coeur (net of collection costs). • One-year promissory note of approximately $28.0 million payable to Coeur with an aggregate principal amount equal to Manquiri’s cash and cash equivalents (the “Note”). • The Agreement includes certain post-closing covenants, guaranties and indemnification obligations on the part of the Company for which the Company is expected to recognize a liability of approximately $6.0 million when the Transaction closes. In accordance with GAAP, the Company classified Manquiri as held for sale and the associated assets and liabilities are classified separately on the consolidated balance sheets. The major classes of assets and liabilities associated with San Bartolomé as of December 31, 2017 and 2016 are as follows: December 31, 2017 December 31, 2016 ASSETS CURRENT ASSETS Cash and cash equivalents $ 32,931 $ 43,870 Receivables 7,295 7,016 Inventory 10,655 12,590 Prepaid expenses and other 13,415 7,966 Property, plant and equipment, net 20,240 — Mining properties, net 6,885 — 91,421 71,442 NON-CURRENT ASSETS Property, plant and equipment, net — 23,373 Mining properties, net — 8,165 Receivables — 17,225 TOTAL ASSETS $ 91,421 $ 120,205 LIABILITIES CURRENT LIABILITIES Accounts payable $ 10,974 $ 8,675 Accrued liabilities and other 5,161 6,382 Reclamation 15,179 413 Other 19,363 — 50,677 15,470 NON-CURRENT LIABILITIES Reclamation — 10,212 Deferred tax liabilities — 4,987 Other — 18,558 TOTAL LIABILITIES $ 50,677 $ 49,227 The expected sale of Manquiri and San Bartolomé is expected to have a major effect on the Company's results and operations. Accordingly, San Bartolomé’s operations for the years ended December 31, 2017, 2016 and 2015 are classified on the consolidated statements of operations and comprehensive income (loss) as Income (loss) from discontinued operations . The major classes of line items constituting the pretax profit or loss for the years ended December 31, 2017, 2016 and 2015 are as follows: Year ended December 31, 2017 2016 2015 Revenue $ 73,065 $ 93,880 $ 84,679 Costs applicable to sales (1) 74,074 74,166 75,827 Amortization 5,899 6,633 17,798 General and administrative 172 101 198 Exploration 23 — 126 Write-downs 3,390 — 66,712 Pre-development, reclamation, and other 4,664 2,808 1,589 Interest expense, net of capitalized interest (27 ) (24 ) (725 ) Other, net 1,763 1,777 1,736 Pretax profit or loss of discontinued operations related to major classes of pretax profit (loss) (13,421 ) 11,925 (76,560 ) Pretax gain or loss on the disposal of the discontinued operation — — — Total pretax gain or loss on discontinued operations (13,421 ) 11,925 (76,560 ) Income and mining tax (expense) benefit 1,177 20,992 (2,812 ) Income (loss) from discontinued operations. $ (12,244 ) $ 32,917 $ (79,372 ) (1) Excludes amortization. Net cash provided by operating activities from San Bartolomé were $11.3 million , $29.4 million , and $26.1 million for the years ended December 31, 2017, 2016 and 2015, respectively. Net cash used in investing activities, which primarily relate to capital expenditures, from San Bartolomé were $1.4 million , $6.6 million , and $6.2 million for the years ended December 31, 2017, 2016 and 2015.

Net Income (Loss) Per Share

Net Income (Loss) Per Share	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
NET INCOME (LOSS) PER SHARE	NET INCOME (LOSS) PER SHARE Basic net income (loss) per share is computed by dividing net income (loss) available to common stockholders by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per share reflects the potential dilution that would occur if securities or other contracts to issue common stock were exercised or converted into common stock. For the years ended December 31, 2017, 2016, and 2015 , 653,354 , 386,771 and 3,239,425 common stock equivalents, respectively, related to equity-based awards were not included in the diluted earnings per share calculation as the shares would be antidilutive. The 3.25% Convertible Senior Notes (“Convertible Notes”) were not included in the computation of diluted net income (loss) per share for the year ended December 31, 2015 because there was no excess value upon conversion over the principal amount of the Convertible Notes. The outstanding Convertible Notes were redeemed in the third quarter of 2016. Year ended December 31, In thousands except per share amounts 2017 2016 2015 Net income (loss) available to common stockholders: Income (loss) from continuing operations $ 10,925 $ 22,435 $ (287,811 ) Income (loss) from discontinued operations (12,244 ) 32,917 (79,372 ) $ (1,319 ) $ 55,352 $ (367,183 ) Weighted average shares: Basic 180,096 159,853 129,639 Effect of stock-based compensation plans 4,048 3,606 — Diluted 184,144 163,459 129,639 Basic income (loss) per share: Income (loss) from continuing operations $ 0.06 $ 0.14 $ (2.22 ) Income (loss) from discontinued operations (0.07 ) 0.21 (0.61 ) Basic $ (0.01 ) $ 0.35 $ (2.83 ) Diluted income (loss) per share: Income (loss) from continuing operations $ 0.06 $ 0.14 $ (2.22 ) Income (loss) from discontinued operations (0.07 ) 0.20 (0.61 ) Diluted $ (0.01 ) $ 0.34 $ (2.83 )

Investments

Investments	12 Months Ended
	Dec. 31, 2017
Investment in Marketable Securities [Abstract]
INVESTMENTS	INVESTMENTS Equity and Debt Securities The Company makes strategic investments in equity and debt securities of silver and gold exploration and development companies. These investments are classified as available-for-sale and are measured at fair value in the financial statements with unrealized gains and losses recorded in Other comprehensive income (loss) . At December 31, 2017 In thousands Cost Gross Unrealized Losses Gross Unrealized Gains Estimated Fair Value Equity Securities Metalla Royalty & Streaming Ltd. $ 6,294 $ — $ 1,354 $ 7,648 Corvus Gold Inc. 3,582 — 4,518 8,100 Almaden Minerals, Ltd. 3,125 (235 ) — 2,890 Northern Empire Resources Corp. 4,489 — 1,077 5,566 Rockhaven Resources, Ltd. 2,064 (193 ) — 1,871 Kootenay Silver, Inc. 738 — 1 739 Other 1,479 (453 ) 405 1,431 Equity securities $ 21,771 $ (881 ) $ 7,355 $ 28,245 Debt Securities Metalla Royalty & Streaming Ltd. $ 6,677 $ (85 ) $ — $ 6,592 Equity and debt securities $ 28,448 $ (966 ) $ 7,355 $ 34,837 At December 31, 2016 In thousands Cost Gross Unrealized Losses Gross Unrealized Gains Estimated Fair Value Kootenay Silver, Inc. $ 2,645 $ — $ — $ 2,645 Silver Bull Resources, Inc. 233 — 783 1,016 Other 229 — 598 827 Equity securities $ 3,107 $ — $ 1,381 $ 4,488 The Company performs a quarterly assessment on each of its equity and debt securities with unrealized losses to determine if the security is other than temporarily impaired. The Company recorded pre-tax other-than-temporary impairment losses of $0.4 million , $0.7 million and $2.3 million in the years ended December 31, 2017, 2016 and 2015, in Other, net . The following table summarizes unrealized losses on equity and debt securities for which other-than-temporary impairments have not been recognized and the fair values of those securities, aggregated by the length of time the individual securities have been in a continuous unrealized loss position, at December 31, 2017 : Less than twelve months Twelve months or more Total In thousands Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Equity securities $ 881 $ 5,662 $ — $ — $ 881 $ 5,662 Debt securities 85 6,592 — — 85 6,592 Restricted Assets The Company, under the terms of its self-insurance and bonding agreements with certain banks, lending institutions and regulatory agencies, is required to collateralize certain portions of its asset retirement obligations. The Company has collateralized these obligations by assigning certificates of deposit that have maturity dates ranging from three months to a year to the applicable institutions or agencies. At December 31, 2017 and December 31, 2016, the Company held certificates of deposit and cash under these agreements of $20.8 million and $17.6 million , respectively. The ultimate timing of the release of the collateralized amounts is dependent on the timing and closure of each mine and repayment of the obligation. In order to release the collateral, the Company must seek approval from certain government agencies responsible for monitoring the mine closure status. Collateral could also be released to the extent the Company is able to secure alternative financial assurance satisfactory to the regulatory agencies. The Company believes the collateral will remain in place beyond a twelve-month period and has therefore classified these investments as long-term.

Receivables

Receivables	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
RECEIVABLES	RECEIVABLES Receivables consist of the following: In thousands December 31, 2017 December 31, 2016 Current receivables: Trade receivables $ 5,883 $ 5,973 Income tax receivable 7 1,038 Value added tax receivable 10,982 44,150 Other 2,197 2,254 $ 19,069 $ 53,415 Non-current receivables: Value added tax receivable $ 28,750 $ 2,088 Income tax receivable — 11,657 28,750 13,745 Total receivables $ 47,819 $ 67,160 After considering the timing required for judgment and appeals, the Company reclassified $26.8 million of value added tax receivables related to Palmarejo from short-term to long-term at December 31, 2017.

Inventory and Ore on Leach Pads

Inventory and Ore on Leach Pads	12 Months Ended
	Dec. 31, 2017
Inventory Disclosure [Abstract]
INVENTORY AND ORE ON LEACH PADS	INVENTORY AND ORE ON LEACH PADS Inventory consists of the following: In thousands December 31, 2017 December 31, 2016 Inventory: Concentrate $ 6,831 $ 17,994 Precious metals 18,803 41,955 Supplies 32,596 33,487 58,230 93,436 Ore on leach pads: Current 73,752 64,167 Non-current 65,393 67,231 139,145 131,398 Total inventory and ore on leach pads $ 197,375 $ 224,834

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
PROPERTY, PLANT AND EQUIPMENT	PROPERTY, PLANT AND EQUIPMENT Property, plant and equipment consist of the following: In thousands December 31, 2017 December 31, 2016 Land $ 9,408 $ 7,869 Facilities and equipment 554,160 532,122 Assets under capital leases 82,753 54,297 646,321 594,288 Accumulated amortization (1) (448,001 ) (423,361 ) 198,320 170,927 Construction in progress 56,417 22,496 Property, plant and equipment, net $ 254,737 $ 193,423 (1) Includes $28.2 million and $14.8 million of accumulated amortization related to assets under capital leases at December 31, 2017 and 2016, respectively. Rent expense for operating lease agreements was $18.0 million , $16.8 million , and $14.3 million for the years ended December 31, 2017, 2016, and 2015, respectively.

Mining Properties

Mining Properties	12 Months Ended
	Dec. 31, 2017
Mining Properties [Abstract]
MINING PROPERTIES	MINING PROPERTIES Mining properties consist of the following (in thousands): December 31, 2017 Palmarejo Rochester Silvertip Kensington Wharf La Preciosa Total Mine development $ 214,383 $ 193,881 $ 57,214 $ 298,749 $ 40,618 $ — $ 804,845 Accumulated amortization (146,598 ) (144,390 ) — (178,632 ) (15,748 ) — (485,368 ) 67,785 49,491 57,214 120,117 24,870 — 319,477 Mineral interests 629,303 — 245,116 — 45,837 49,085 969,341 Accumulated amortization (435,215 ) — — — (24,034 ) — — (459,249 ) 194,088 — 245,116 — 21,803 49,085 510,092 Mining properties, net $ 261,873 $ 49,491 $ 302,330 $ 120,117 $ 46,673 $ 49,085 $ 829,569 December 31, 2016 Palmarejo Rochester Kensington Wharf La Preciosa Joaquin Other Total Mine development $ 174,890 $ 165,230 $ 271,175 $ 37,485 $ — $ — $ — $ 648,780 Accumulated amortization (134,995 ) (138,244 ) (154,744 ) (11,699 ) — — (439,682 ) 39,895 26,986 116,431 25,786 — — — 209,098 Mineral interests 629,303 — — 45,837 49,085 10,000 37,272 771,497 Accumulated amortization (381,686 ) — — (19,249 ) — — (29,370 ) (430,305 ) 247,617 — — 26,588 49,085 10,000 7,902 341,192 Mining properties, net $ 287,512 $ 26,986 $ 116,431 $ 52,374 $ 49,085 $ 10,000 $ 7,902 $ 550,290 Palmarejo is located in the State of Chihuahua in northern Mexico and consists of the Palmarejo mine and mill, the Guadalupe underground mine, the Independencia underground mine, and other deposits and exploration targets. Palmarejo commenced production in April 2009. The Rochester silver and gold mine, located in northwestern Nevada has been operated by the Company since September 1986. The mine utilizes heap-leaching to extract both silver and gold from ore mined using open pit methods. The Silvertip is a silver-zinc-lead mine located in northern British Columbia, Canada. Silvertip is expected to commence production in the first quarter of 2018. The Kensington mine is an underground gold mine and consists of the Kensington and adjacent Jualin properties located north-northwest of Juneau, Alaska. The Company commenced commercial production in July 2010. The Wharf gold mine is an open pit gold mine located near the city of Lead, South Dakota. The Company acquired Wharf in February 2015. The La Preciosa silver-gold project is located in the State of Durango in northern Mexico. The Company completed a feasibility study in 2014 and has deferred construction activities until expected returns improve. Asset Sales In February 2017, the Company sold the Joaquin silver-gold exploration project for consideration of $27.4 million and a 2.0% NSR royalty on the Joaquin project, the Company recognized a $21.1 million pre-tax gain on this sale, included in Other, net on the Consolidated Statements of Comprehensive Income. In July 2017, the Company sold the Endeavor Silver Stream and our remaining portfolio of royalties to Metalla for total consideration of $13.0 million comprised of $6.3 million of Metalla shares and a $6.7 million convertible debenture. The Company recognized a $1.2 million pre-tax gain, included in Other, net on the Consolidated Statements of Comprehensive Income. In December 2017, the Company entered into an agreement to sell Manquiri, which operates the San Bartolomé mine. See Note 22 -- Held for Sale for additional detail.

Debt

Debt	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
DEBT	DEBT December 31, 2017 December 31, 2016 In thousands Current Non-Current Current Non-Current 2024 Senior Notes, net (1) $ — $ 245,088 $ — $ — 2021 Senior Notes, net (2) — — — 175,991 Revolving Credit Facility (3) — 100,000 — — Capital lease obligations 16,559 35,481 11,955 22,691 Silvertip debt obligation 14,194 — — — $ 30,753 $ 380,569 $ 11,955 $ 198,682 (1) Net of unamortized debt issuance costs of $4.9 million at December 31, 2017 . (2) Net of unamortized debt issuance costs and premium received of $2.0 million at December 31, 2016. (3) Unamortized debt issuance costs of $1.9 million at December 31, 2017 included in Other Non-Current Assets . 5.875% Senior Notes due 2024 In May 2017, the Company completed an offering of $250.0 million in aggregate principal amount of 2024 Senior Notes in a private placement conducted pursuant to Rule 144A and Regulation S under the Securities Act of 1933, as amended for net proceeds of approximately $245.0 million . The 2024 Senior Notes are governed by an Indenture dated as of May 31, 2017 (the “Indenture”), among the Company, as issuer, certain of the Company's subsidiaries named therein, as guarantors thereto (the “Guarantors”), and the Bank of New York Mellon, as trustee. In connection with the sale of the 2024 Senior Notes, the Company entered into a Registration Rights Agreement. On August 4, 2017, the Company commenced an exchange offer of registered 2024 Senior Notes for privately-placed 2024 Senior Notes which was completed on September 12, 2017. The 2024 Senior Notes bear interest at a rate of 5.875% per year from the date of issuance. Interest on the 2024 Senior Notes is payable semi-annually in arrears on June 1 and December 1 of each year, commencing on December 1, 2017. The 2024 Senior Notes will mature on June 1, 2024 and are fully and unconditionally guaranteed by the Guarantors. At any time prior to June 1, 2020, the Company may redeem all or part of the 2024 Senior Notes upon not less than 30 nor more than 60 days’ prior notice at a redemption price equal to the sum of (i) 100% of the principal amount thereof, plus (ii) a make-whole premium as of the date of redemption, plus (iii) accrued and unpaid interest and additional interest, if any, thereon, to the date of redemption. In addition, the Company may redeem some or all of the 2024 Senior Notes on or after June 1, 2020, at redemption prices set forth in the Indenture, together with accrued and unpaid interest. At any time prior to June 1, 2020, the Company may use the proceeds of certain equity offerings to redeem up to 35% of the aggregate principal amount of the 2024 Senior Notes, including any permitted additional 2024 Senior Notes, at a redemption price equal to 105.875% of the principal amount. The Indenture contains covenants that, among other things, limit the Company’s ability under certain circumstances to incur additional indebtedness, pay dividends or make other distributions or repurchase or redeem capital stock, prepay, redeem or repurchase certain debt, make loans and investments, create liens, sell, transfer or otherwise dispose of assets, enter into transactions with affiliates, enter into agreements restricting the Company's subsidiaries' ability to pay dividends and impose conditions on the Company’s ability to engage in mergers, consolidations and sales of all or substantially all of its assets. The Indenture also contains certain “Events of Default” (as defined in the Indenture) customary for indentures of this type. 7.875% Senior Notes due 2021 Concurrent with the offering of the 2024 Senior Notes, the Company commenced a cash tender offer (the “Tender Offer”) to purchase the outstanding $178.0 million in aggregate principal amount of its 2021 Senior Notes. The Tender Offer was made on the terms and subject to the conditions set forth in the Offer to Purchase dated May 19, 2017. Holders of the 2021 Senior Notes who tendered their notes were entitled to receive $1,043.88 per $1,000 principal amount of the Notes, plus accrued and unpaid interest. $118.1 million aggregate principal amount of the Notes were tendered and purchased by the Company on May 31, 2017. In accordance with the terms of the indenture governing the 2021 Senior Notes, the remaining $59.9 million aggregate principal amount of the Notes were redeemed on June 30, 2017 at the redemption price of $1,039.38 per $1,000 principal amount, plus accrued and unpaid interest. The Company recorded a loss of $9.3 million as a result of the extinguishment of the 2021 Senior Notes. Revolving Credit Facility In September 2017, the Company, as borrower, and certain subsidiaries of the Company, as guarantors, entered into a Credit Agreement (the “Credit Agreement”) with Bank of America, N.A, Royal Bank of Canada, Bank of Montreal, Chicago Branch, and the Bank of Nova Scotia. The Credit Agreement provides for a $200.0 million senior secured revolving credit facility (the “Facility”), which may be increased by up to $50.0 million in incremental loans and commitments subject to the terms of the Credit Agreement. The Facility has a term of four years. Loans under the Facility will bear interest at a rate equal to either a base rate plus a margin ranging from 1.00% to 1.75% or an adjusted LIBOR rate plus a margin ranging from 2.00% to 2.75% , as selected by the Company, in each case, with such margin determined in accordance with a pricing grid based upon the Company’s consolidated net leverage ratio as of the end of the applicable period. The Facility is secured by substantially all of the assets of the Company and its domestic subsidiaries, including the land, mineral rights and infrastructure at the Kensington, Rochester and Wharf mines, as well as a pledge of the shares of certain of the Company’s subsidiaries. The Credit Agreement contains representations and warranties and affirmative and negative covenants that are usual and customary, including representations, warranties, and covenants that, among other things, restrict the ability of the Company and its subsidiaries to incur additional debt, incur or permit liens on assets, make investments and acquisitions, consolidate or merge with any other company, engage in asset sales and make dividends and distributions. The Credit Agreement contains financial covenants consisting of a consolidated net leverage ratio and a consolidated interest coverage ratio. Obligations under the Credit Agreement may be accelerated upon the occurrence of certain customary events of default. At December 31, 2017, the Company had $88.0 million available under the Facility; $12.0 million of the amounts used under the Facility currently support outstanding letters of credit and $100.0 million was used to partially fund the Silvertip acquisition. At December 31, 2017, the interest rate of the Facility was 3.7% . Silvertip Debt Obligation The Company assumed an existing third-party debt obligation as part of the Silvertip acquisition (the “Silvertip Debt”). The Silvertip Debt is comprised of three $5.0 million tranches, all of which are contractually due October 31, 2018 and secured by machinery and equipment. Two of the three tranches bear interest at the 3-month LIBOR rate plus 5.5% and one tranche bears interest at the 3-month LIBOR rate plus 6.7% . Capital Lease Obligations From time to time, the Company acquires mining equipment under capital lease agreements. In the year ended December 31, 2017 , the Company entered into new lease financing arrangements primarily for diesel generators at Kensington and mining equipment at Palmarejo, Rochester, Silvertip and Kensington. All capital lease obligations are recorded, upon lease inception, at the present value of future minimum lease payments. Minimum future lease payments under capital and operating leases with terms longer than one year are as follows: At December 31, ( In thousands) Operating leases Capital leases 2018 $ 5,220 $ 18,758 2019 5,154 13,938 2020 4,669 11,018 2021 3,798 9,646 2022 2,646 3,510 Thereafter 4,099 40 Total $ 25,586 $ 56,910 Less: imputed interest — (4,696 ) Net lease obligation $ 25,586 $ 52,214 Interest Expense Year ended December 31, In thousands 2017 2016 2015 2024 Senior Notes $ 8,608 $ — $ — 2021 Senior Notes 6,221 28,871 $ 33,437 Revolving Credit Facility 885 — — 3.25% Convertible Senior Notes due 2028 — 13 54 Term Loan due 2020 — 4,939 4,715 Capital lease obligations 1,621 1,422 999 Accretion of Palmarejo gold production royalty obligation — 1,211 6,567 Amortization of debt issuance costs 809 1,933 2,257 Accretion of debt premium (71 ) (345 ) (409 ) Accretion of Silvertip contingent consideration 260 — — Other debt obligations 42 58 350 Capitalized interest (1,935 ) (1,206 ) (2,992 ) Total interest expense, net of capitalized interest $ 16,440 $ 36,896 $ 44,978

Supplemental Guarantor Informat

Supplemental Guarantor Information	12 Months Ended
	Dec. 31, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
SUPPLEMENTAL GUARANTOR INFORMATION	SUPPLEMENTAL GUARANTOR INFORMATION The following Consolidating Financial Statements are presented to satisfy disclosure requirements of Rule 3-10 of Regulation S-X resulting from the guarantees by Coeur Alaska, Inc., Coeur Explorations, Inc., Coeur Rochester, Inc., Coeur South America Corp., Wharf Resources (U.S.A.), Inc. and its subsidiaries, and Coeur Capital, Inc. (collectively, the “Subsidiary Guarantors”) of the 2024 Senior Notes. The following schedules present Consolidating Financial Statements of (a) Coeur, the parent company; (b) the Subsidiary Guarantors; and (c) certain wholly-owned domestic and foreign subsidiaries of the Company (collectively, the “Non-Guarantor Subsidiaries”). Each of the Subsidiary Guarantors is 100% owned by Coeur and the guarantees are full and unconditional and joint and several obligations. There are no restrictions on the ability of Coeur to obtain funds from the Subsidiary Guarantors by dividend or loan. CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS) YEAR ENDED DECEMBER 31, 2017 In thousands Coeur Mining, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ — $ 433,050 $ 276,548 $ — $ 709,598 COSTS AND EXPENSES Costs applicable to sales (1) — 293,340 146,920 — 440,260 Amortization 1,157 71,340 74,052 — 146,549 General and administrative 33,379 28 209 — 33,616 Exploration 1,592 13,689 15,030 — 30,311 Pre-development, reclamation, and other 4,705 7,497 6,734 — 18,936 Total costs and expenses 40,833 385,894 242,945 — 669,672 OTHER INCOME (EXPENSE), NET Loss on debt extinguishments (9,342 ) — — — (9,342 ) Fair value adjustments, net — (864 ) — — (864 ) Other, net 21,254 2,936 10,179 (7,726 ) 26,643 Interest expense, net of capitalized interest (14,657 ) (975 ) (8,534 ) 7,726 (16,440 ) Total other income (expense), net (2,745 ) 1,097 1,645 — (3 ) Income (loss) from continuing operations before income and mining taxes (43,578 ) 48,253 35,248 — 39,923 Income and mining tax (expense) benefit 2,170 (5,758 ) (25,410 ) — (28,998 ) Income (loss) from continuing operations (41,408 ) 42,495 9,838 — 10,925 Equity income (loss) in consolidated subsidiaries 40,089 (577 ) 4,416 (43,928 ) — Income (loss) from discontinued operations — — (12,244 ) — (12,244 ) NET INCOME (LOSS) $ (1,319 ) $ 41,918 $ 2,010 $ (43,928 ) $ (1,319 ) OTHER COMPREHENSIVE INCOME (LOSS), net of tax: Unrealized gain (loss) on marketable securities, net of tax 3,227 915 — (915 ) 3,227 Reclassification adjustments for impairment of equity securities, net of tax 426 426 — (426 ) 426 Reclassification adjustments for realized gain (loss) on sale of equity securities, net of tax 1,354 486 — (486 ) 1,354 Other comprehensive income (loss) 5,007 1,827 — (1,827 ) 5,007 COMPREHENSIVE INCOME (LOSS) $ 3,688 $ 43,745 $ 2,010 $ (45,755 ) $ 3,688 (1) Excludes amortization. CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS) YEAR ENDED DECEMBER 31, 2016 In thousands Coeur Mining, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ — $ 423,488 $ 148,409 $ — $ 571,897 COSTS AND EXPENSES Costs applicable to sales (1) — 252,836 82,539 — 335,375 Amortization 1,558 77,392 37,578 — 116,528 COSTS AND EXPENSES General and administrative 28,704 250 321 — 29,275 Exploration 1,596 6,127 5,207 — 12,930 Write-downs — — 4,446 — 4,446 Pre-development, reclamation, and other 2,044 5,839 6,528 — 14,411 Total costs and expenses 33,902 342,444 136,619 — 512,965 OTHER INCOME (EXPENSE), NET Loss on debt extinguishments (21,365 ) — — — (21,365 ) Fair value adjustments, net (1,635 ) (4,133 ) (5,813 ) — (11,581 ) Other, net 4,357 2,139 (1,314 ) (5,084 ) 98 Interest expense, net of capitalized interest (35,158 ) (861 ) (5,961 ) 5,084 (36,896 ) Total other income (expense), net (53,801 ) (2,855 ) (13,088 ) — (69,744 ) Income (loss) from continuing operations before income and mining taxes (87,703 ) 78,189 (1,298 ) — (10,812 ) Income and mining tax (expense) benefit 11,733 (7,517 ) 29,031 — 33,247 Income (loss) from continuing operations (75,970 ) 70,672 27,733 — 22,435 Equity income (loss) in consolidated subsidiaries 131,322 (4,353 ) — (126,969 ) — Income (loss) from discontinued operations — — 32,917 — 32,917 NET INCOME (LOSS) $ 55,352 $ 66,319 $ 60,650 $ (126,969 ) $ 55,352 OTHER COMPREHENSIVE INCOME (LOSS), net of tax: Unrealized gain (loss) on marketable securities, net of tax 3,222 3,156 — (3,156 ) 3,222 Reclassification adjustments for impairment of equity securities, net of tax 703 703 — (703 ) 703 Reclassification adjustments for realized loss on sale of equity securities, net of tax (2,691 ) (3,181 ) — 3,181 (2,691 ) Other comprehensive income (loss) 1,234 678 — (678 ) 1,234 COMPREHENSIVE INCOME (LOSS) $ 56,586 $ 66,997 $ 60,650 $ (127,647 ) $ 56,586 (1) Excludes amortization. CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS) YEAR ENDED DECEMBER 31, 2015 In thousands Coeur Mining, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ — $ 378,278 $ 183,129 $ — $ 561,407 COSTS AND EXPENSES Costs applicable to sales (1) — 261,830 141,997 — 403,827 Amortization 1,991 83,325 40,637 — 125,953 COSTS AND EXPENSES General and administrative 32,405 35 196 — 32,636 Exploration 2,265 3,931 5,325 — 11,521 Write-downs — 1,630 244,995 — 246,625 Pre-development, reclamation, and other 4,083 5,920 6,201 — 16,204 Total costs and expenses 40,744 356,671 439,351 — 836,766 OTHER INCOME (EXPENSE), NET Gain on debt extinguishments 15,916 — — — 15,916 Fair value adjustments, net 1,224 818 3,160 — 5,202 Other, net 4,336 (3,106 ) (15,121 ) (3,776 ) (17,667 ) Interest expense, net of capitalized interest (39,867 ) (966 ) (7,921 ) 3,776 (44,978 ) Total other income (expense), net (18,391 ) (3,254 ) (19,882 ) — (41,527 ) Income (loss) from continuing operations before income and mining taxes (59,135 ) 18,353 (276,104 ) — (316,886 ) Income and mining tax (expense) benefit 1,827 (2,354 ) 29,602 — 29,075 Income (loss) from continuing operations (57,308 ) 15,999 (246,502 ) — (287,811 ) Equity income (loss) in consolidated subsidiaries (309,875 ) (14,814 ) — 324,689 — Income (loss) from discontinued operations — — (79,372 ) — (79,372 ) NET INCOME (LOSS) $ (367,183 ) $ 1,185 $ (325,874 ) $ 324,689 $ (367,183 ) OTHER COMPREHENSIVE INCOME (LOSS), net of tax: Unrealized gain (loss) on equity securities, net of tax (4,154 ) (3,118 ) — 3,118 (4,154 ) Reclassification adjustments for impairment of equity securities, net of tax 2,346 2,346 — (2,346 ) 2,346 Reclassification adjustments for realized loss on sale of equity securities, net of tax 894 894 — (894 ) 894 Other comprehensive income (loss) (914 ) 122 — (122 ) (914 ) COMPREHENSIVE INCOME (LOSS) $ (368,097 ) $ 1,307 $ (325,874 ) $ 324,567 $ (368,097 ) CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS YEAR ENDED DECEMBER 31, 2017 In thousands Coeur Mining, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated CASH FLOWS FROM OPERATING ACTIVITIES: Cash provided by (used in) activities of continuing operations $ (8,470 ) $ 118,667 $ 130,491 $ (43,528 ) 197,160 Cash provided by (used in) activities of discontinued operations — — 11,296 — 11,296 CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES (8,470 ) 118,667 141,787 (43,528 ) 208,456 CASH FLOWS FROM INVESTING ACTIVITIES Capital expenditures (1,941 ) (85,967 ) (48,826 ) — (136,734 ) Proceeds from the sale of assets 8,917 6,902 886 — 16,705 Purchase of investments (15,057 ) (1 ) — — (15,058 ) Sales of investments 9,157 2,164 — — 11,321 Acquisitions, net of cash acquired (156,248 ) — 52,577 — — (156,248 ) Other (3,020 ) — 2,803 — (217 ) Investments in consolidated subsidiaries (34,419 ) 12,911 (881 ) 22,389 — Cash provided by (used in) activities of continuing operations (192,611 ) (63,991 ) (46,018 ) 22,389 (280,231 ) Cash provided by (used in) activities of discontinued operations — — (1,392 ) — (1,392 ) CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES (192,611 ) (63,991 ) (47,410 ) 22,389 (281,623 ) CASH FLOWS FROM FINANCING ACTIVITIES: Issuance of notes and bank borrowings 342,620 — 52,577 — — 342,620 Payments on debt, capital leases, and associated costs (185,538 ) (7,926 ) (9,581 ) — (203,045 ) Net intercompany financing activity 34,359 (44,540 ) 9,801 380 — Other (3,746 ) — — — (3,746 ) Cash provided by (used in) activities of continuing operations 187,695 (52,466 ) 220 380 135,829 Cash provided by (used in) activities of discontinued operations — — (20,843 ) 20,759 (84 ) CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES 187,695 (52,466 ) (20,623 ) 21,139 135,745 Effect of exchange rate changes on cash and cash equivalents — 6 197 — 203 Less net cash provided by (used in) discontinued operations — — (10,939 ) — (10,939 ) NET CHANGE IN CASH AND CASH EQUIVALENTS (13,386 ) 2,216 84,890 — 73,720 Cash and cash equivalents at beginning of period 58,048 50,023 10,241 — 118,312 Cash and cash equivalents at end of period $ 44,662 $ 52,239 $ 95,131 $ — $ 192,032 CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS YEAR ENDED DECEMBER 31, 2016 In thousands Coeur Mining, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated CASH FLOWS FROM OPERATING ACTIVITIES: Cash provided by (used in) activities of continuing operations $ 62,207 $ 134,892 $ 26,331 $ (126,969 ) 96,461 Cash provided by (used in) activities of discontinued operations — — 29,356 — 29,356 CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES 62,207 134,892 55,687 (126,969 ) 125,817 CASH FLOWS FROM INVESTING ACTIVITIES Capital expenditures (246 ) (58,084 ) (36,052 ) — (94,382 ) Proceeds from the sale of assets — 4,800 11,496 — 16,296 Purchase of investments (178 ) — — — (178 ) Sales of investments 501 6,576 — — 7,077 Acquisitions, net of cash acquired — — (1,417 ) — (1,417 ) Other (4,396 ) 368 (180 ) — (4,208 ) Investments in consolidated subsidiaries (107,855 ) 25,047 — 82,808 — Cash provided by (used in) activities of continuing operations (112,174 ) (21,293 ) (26,153 ) 82,808 (76,812 ) Cash provided by (used in) activities of discontinued operations — — (6,631 ) — (6,631 ) CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES (112,174 ) (21,293 ) (32,784 ) 82,808 (83,443 ) CASH FLOWS FROM FINANCING ACTIVITIES: Payments on debt, capital leases, and associated costs (303,686 ) (10,894 ) (3,573 ) — (318,153 ) Gold production royalty payments — — (27,155 ) — (27,155 ) Net intercompany financing activity 45,850 (86,914 ) 13,404 27,660 — Issuance of common stock 269,556 — — — 269,556 Other 172 — — — 172 Cash provided by (used in) activities of continuing operations 11,892 (97,808 ) (17,324 ) 27,660 (75,580 ) Cash provided by (used in) activities of discontinued operations — — (21,149 ) 16,501 (4,648 ) CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES 11,892 (97,808 ) (38,473 ) 44,161 (80,228 ) Effect of exchange rate changes on cash and cash equivalents — 4 (682 ) — (678 ) Less net cash provided by (used in) discontinued operations — — 1,576 — 1,576 NET CHANGE IN CASH AND CASH EQUIVALENTS (38,075 ) 15,795 (17,828 ) — (40,108 ) Cash and cash equivalents at beginning of period 96,123 34,228 28,069 — 158,420 Cash and cash equivalents at end of period $ 58,048 $ 50,023 $ 10,241 $ — $ 118,312 CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS YEAR ENDED DECEMBER 31, 2015 In thousands Coeur Mining, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated CASH FLOWS FROM OPERATING ACTIVITIES: Cash provided by (used in) activities of continuing operations $ (377,091 ) $ 86,486 $ 53,328 $ 324,689 87,412 Cash provided by (used in) activities of discontinued operations — — 26,130 — 26,130 CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES (377,091 ) 86,486 79,458 324,689 113,542 CASH FLOWS FROM INVESTING ACTIVITIES Capital expenditures (514 ) (52,376 ) (36,083 ) — (88,973 ) Proceeds from the sale of assets — 289 318 — 607 Purchase of investments (1,880 ) — — — (1,880 ) Sales of investments 2 532 71 — 605 Acquisitions, net of cash acquired (110,846 ) — — — (110,846 ) Other (4,710 ) 234 (110 ) — (4,586 ) Investments in consolidated subsidiaries 282,041 20,239 120 (302,400 ) — Cash provided by (used in) activities of continuing operations 164,093 (31,082 ) (35,684 ) (302,400 ) (205,073 ) Cash provided by (used in) activities of discontinued operations — — (6,220 ) — (6,220 ) CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES 164,093 (31,082 ) (41,904 ) (302,400 ) (211,293 ) CASH FLOWS FROM FINANCING ACTIVITIES: Issuance of notes and bank borrowings 150,000 — — — 150,000 Payments on debt, capital leases, and associated costs (62,930 ) (7,428 ) (245 ) — (70,603 ) Gold production royalty payments — — (39,235 ) — (39,235 ) Net intercompany financing activity 12,232 (19,518 ) 27,321 (20,035 ) — Other (542 ) — — — (542 ) Cash provided by (used in) activities of continuing operations 98,760 (26,946 ) (12,159 ) (20,035 ) 39,620 Cash provided by (used in) activities of discontinued operations — — (8,358 ) (2,254 ) (10,612 ) CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES 98,760 (26,946 ) (20,517 ) (22,289 ) 29,008 Effect of exchange rate changes on cash and cash equivalents — (11 ) (1,393 ) — (1,404 ) Less net cash provided by (used in) discontinued operations — — 11,552 — 11,552 NET CHANGE IN CASH AND CASH EQUIVALENTS (114,238 ) 28,447 4,092 — (81,699 ) Cash and cash equivalents at beginning of period 210,361 5,781 23,977 — 240,119 Cash and cash equivalents at end of period $ 96,123 $ 34,228 $ 28,069 $ — $ 158,420 CONDENSED CONSOLIDATING BALANCE SHEET DECEMBER 31, 2017 In thousands Coeur Mining, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated ASSETS CURRENT ASSETS Cash and cash equivalents $ 44,662 $ 52,239 $ 95,131 $ — $ 192,032 Receivables 137 7,922 11,010 — 19,069 Ore on leach pads — 73,752 — — 73,752 Inventory — 29,769 28,461 — 58,230 Prepaid expenses and other 7,824 2,816 4,413 — 15,053 Assets held for sale — — 91,421 — 91,421 52,623 166,498 230,436 — 449,557 NON-CURRENT ASSETS Property, plant and equipment, net 4,007 161,487 89,243 — 254,737 Mining properties, net — 216,281 613,288 — 829,569 Ore on leach pads — 65,393 — — 65,393 Restricted assets 13,251 227 7,369 — 20,847 Equity and debt securities 33,569 1,268 — — 34,837 Receivables — — 28,750 — 28,750 Net investment in subsidiaries 422,074 223 (18 ) (422,279 ) — Other 320,335 11,040 2,854 (316,744 ) 17,485 TOTAL ASSETS $ 845,859 $ 622,417 $ 971,922 $ (739,023 ) $ 1,701,175 LIABILITIES AND STOCKHOLDERS’ EQUITY CURRENT LIABILITIES Accounts payable $ 3,607 $ 24,534 $ 20,451 $ — $ 48,592 Other accrued liabilities 13,205 19,262 62,463 — 94,930 Debt — 9,215 21,538 — 30,753 Royalty obligations — — — — — Reclamation — 2,313 1,464 — 3,777 Liabilities held for sale — — 50,677 — 50,677 16,812 55,324 156,593 — 228,729 NON-CURRENT LIABILITIES Debt 345,088 28,313 323,912 (316,744 ) 380,569 Reclamation — 82,021 35,034 — 117,055 Deferred tax liabilities 4,110 5,127 95,911 — 105,148 Other long-term liabilities 2,311 3,063 49,323 — 54,697 Intercompany payable (receivable) (337,439 ) 317,759 19,680 — — 14,070 436,283 523,860 (316,744 ) 657,469 STOCKHOLDERS’ EQUITY Common stock 1,856 19,630 195,020 (214,650 ) 1,856 Additional paid-in capital 3,357,345 149,194 1,885,046 (2,034,240 ) 3,357,345 Accumulated deficit (2,546,743 ) (34,551 ) (1,788,597 ) 1,823,148 (2,546,743 ) Accumulated other comprehensive income (loss) 2,519 (3,463 ) — 3,463 2,519 814,977 130,810 291,469 (422,279 ) 814,977 TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY $ 845,859 $ 622,417 $ 971,922 $ (739,023 ) $ 1,701,175 CONDENSED CONSOLIDATING BALANCE SHEET DECEMBER 31, 2016 In thousands Coeur Mining, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated ASSETS CURRENT ASSETS Cash and cash equivalents $ 58,048 $ 50,023 $ 10,241 $ — $ 118,312 Receivables 12 6,865 46,538 — 53,415 Ore on leach pads — 64,167 — — 64,167 Inventory — 49,393 44,043 — 93,436 Prepaid expenses and other 3,803 1,459 4,753 — 10,015 Assets held for sale — — 71,442 — 71,442 61,863 171,907 177,017 — 410,787 NON-CURRENT ASSETS Property, plant and equipment, net 3,222 139,885 50,316 — 193,423 Mining properties, net — 195,791 354,499 — 550,290 Ore on leach pads — 67,231 — — 67,231 Restricted assets 10,170 226 7,201 — 17,597 Equity and debt securities — 4,488 — — 4,488 Receivables — — 13,745 — 13,745 Net investment in subsidiaries 273,056 11,650 — (284,706 ) — Other 221,381 9,263 3,500 (221,559 ) 12,585 Assets held for sale — — 48,763 — 48,763 TOTAL ASSETS $ 569,692 $ 600,441 $ 655,041 $ (506,265 ) $ 1,318,909 LIABILITIES AND STOCKHOLDERS’ EQUITY CURRENT LIABILITIES Accounts payable $ 2,153 $ 24,921 $ 17,586 $ — $ 44,660 Other accrued liabilities 12,881 13,664 9,900 — 36,445 Debt — 6,516 5,439 — 11,955 Royalty obligations — 4,995 — — 4,995 Reclamation — 2,672 437 — 3,109 Liabilities held for sale — — 15,470 — 15,470 15,034 52,768 48,832 — 116,634 NON-CURRENT LIABILITIES Debt 175,991 15,214 229,036 (221,559 ) 198,682 Royalty obligations — 4,292 — — 4,292 Reclamation — 75,183 10,409 — 85,592 Deferred tax liabilities 13,810 6,179 49,822 — 69,811 Other long-term liabilities 1,993 4,750 34,911 — 41,654 Intercompany payable (receivable) (405,623 ) 336,813 68,810 — — Liabilities held for sale — — 33,757 — 33,757 (213,829 ) 442,431 426,745 (221,559 ) 433,788 STOCKHOLDERS’ EQUITY Common stock 1,809 250 197,913 (198,163 ) 1,809 Additional paid-in capital 3,314,590 181,009 1,864,261 (2,045,270 ) 3,314,590 Accumulated deficit (2,545,424 ) (73,529 ) (1,882,710 ) 1,956,239 (2,545,424 ) Accumulated other comprehensive income (loss) (2,488 ) (2,488 ) — 2,488 (2,488 ) 768,487 105,242 179,464 (284,706 ) 768,487 TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY $ 569,692 $ 600,441 $ 655,041 $ (506,265 ) $ 1,318,909

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Palmarejo Gold Stream Effective August 2016, Coeur Mexicana sells 50% of Palmarejo gold production (excluding production from the Paramount properties acquired in 2015) to a subsidiary of Franco-Nevada Corporation under a gold stream agreement for the lesser of $800 or spot price per ounce. In 2015, Coeur Mexicana received a $22.0 million deposit toward future deliveries under the gold stream agreement. In accordance with generally accepted accounting principles, although Coeur has satisfied its contractual obligation to repay the deposit to the subsidiary of Franco-Nevada Corporation, the deposit is accounted for as deferred revenue and is recognized as revenue on a units of production basis as ounces are sold to the Franco-Nevada Corporation subsidiary. As of December 31, 2017, the remaining unamortized balance was $14.9 million . Silvertip Contingent Consideration A total of $50.0 million of contingent consideration, payable in cash and common stock, was offered in conjunction with the Silvertip acquisition in October 2017. The contingent consideration is based on the achievement of two milestones, which the Company has determined to be probable at December 31, 2017. The first milestone payment of $25.0 million is contingent upon receipt of a permit expansion for a sustained mining and milling rate of 1,000 tonnes per day. The application must be submitted to the British Columbia Ministry of Energy and Mining no later than June 2018. The second milestone payment of $25.0 million is contingent upon the amount of resource tonnes added as of December 31, 2019. The maximum payment of $25.0 million can be earned if the total resource reaches 3.7 million tonnes. The former JDS Silver shareholders will receive $5.0 million for a total resource of at least 2.5 million tonnes and $5.0 million for every 0.3 million tonnes over 2.5 million tonnes up to 3.7 million tonnes.

Additional Balance Sheet Detail

Additional Balance Sheet Detail and Supplemental Cash Flow Information	12 Months Ended
	Dec. 31, 2017
Supplemental Cash Flow Information [Abstract]
Cash Flow, Supplemental Disclosures [Text Block]	ADDITIONAL BALANCE SHEET DETAIL AND SUPPLEMENTAL CASH FLOW INFORMATION Accrued liabilities and other consist of the following: December 31, 2017 December 31, 2016 Accrued salaries and wages $ 26,559 $ 20,895 Income and mining taxes 25,788 3,721 Silvertip contingent consideration 24,393 — Accrued operating costs 12,323 3,199 Taxes other than income and mining 4,354 2,738 Accrued interest payable 1,513 5,892 Accrued liabilities and other $ 94,930 $ 36,445 The following table presents non-cash financing and investing activities and other cash flow information: Year ended December 31, Non-cash financing and investing activities: 2017 2016 2015 Capital lease obligations $ 34,604 $ 32,243 $ 4,123 Non-cash extinguishment of senior notes — 10,616 53,373 Non-cash acquisitions and related deferred taxes 131,833 — 297,821 Other cash flow information: Interest paid $ 21,943 $ 41,919 $ 41,442 Income taxes paid 13,000 17,181 1,937

Summary of Quarterly Financial

Summary of Quarterly Financial Data (Unaudited) (Notes)	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Unaudited Consolidated Quarterly Financial Information	SUMMARY OF QUARTERLY FINANCIAL DATA (UNAUDITED) The following table sets forth a summary of the unaudited quarterly results of operations for the years ended December 31, 2017 and 2016 (in thousands, except per share data): Q1 Q2 Q3 Q4 2017 Revenues $ 185,554 $ 149,540 $ 159,919 $ 214,585 Costs applicable to sales 114,490 102,229 101,559 121,982 Amortization 38,693 30,733 32,401 44,722 Exploration 5,252 7,813 9,792 7,454 Other operating expenses (General and administrative, Pre-development, reclamation, and other, and Write-downs) 13,962 11,110 12,374 15,106 Income (loss) from continuing operations 18,299 (9,995 ) (11,728 ) 14,349 Income (loss) from discontinued operations 364 (960 ) (4,924 ) (6,724 ) Net income (loss) 18,663 (10,955 ) (16,652 ) 7,625 Cash provided by (used in) operating activities 43,938 24,103 37,308 91,811 Capital expenditures 23,591 37,107 28,982 47,054 Basic income (loss) per share: Net income (loss) from continuing operations $ 0.10 $ (0.05 ) $ (0.06 ) $ 0.08 Net income (loss) from discontinued operations — (0.01 ) (0.03 ) (0.04 ) Basic $ 0.10 $ (0.06 ) $ (0.09 ) $ 0.04 Diluted income (loss) per share: Net income (loss) from continuing operations $ 0.10 $ (0.05 ) $ (0.06 ) $ 0.08 Net income (loss) from discontinued operations — (0.01 ) (0.03 ) (0.04 ) Diluted $ 0.10 $ (0.06 ) $ (0.09 ) $ 0.04 Q1 Q2 Q3 Q4 2016 Revenues $ 127,109 $ 156,822 $ 148,762 $ 139,204 Costs applicable to sales 84,058 81,820 84,594 84,903 Amortization 26,210 35,653 26,040 28,625 Exploration 1,731 2,233 3,706 5,260 Other operating expenses (General and administrative, Pre-development, reclamation, and other, and Write-downs) 16,635 10,688 10,439 10,370 Income (loss) from continuing operations (21,640 ) 8,280 46,123 (10,328 ) Income (loss) from discontinued operations 1,244 6,217 23,436 2,020 Net income (loss) (20,396 ) 14,497 69,559 (8,308 ) Cash provided by (used in) operating activities 1,085 34,752 39,201 21,423 Capital expenditures 21,651 21,971 22,626 28,134 Basic income (loss) per share: Net income (loss) from continuing operations $ (0.15 ) $ 0.05 $ 0.29 $ (0.06 ) Net income (loss) from discontinued operations 0.01 0.04 0.14 0.01 Basic $ (0.14 ) $ 0.09 $ 0.43 $ (0.05 ) Diluted income (loss) per share: Net income (loss) from continuing operations $ (0.15 ) $ 0.05 $ 0.28 $ (0.06 ) Net income (loss) from discontinued operations 0.01 0.04 0.14 0.01 Diluted $ (0.14 ) $ 0.09 $ 0.42 $ (0.05 )

Summary of Significant Accoun32

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Reclassification, Policy	Reclassifications Certain reclassifications have been made to the 2016 and 2015 consolidated financial statements to conform to the 2017 presentations. These reclassifications primarily represent reclassifications of revenue and expenses to discontinued operations on the consolidated statements of operations and comprehensive income and consolidated statements of cash flows for the years ended December 31, 2016 and 2015 and reclassifications of assets and liabilities to held for sale on the consolidated balance sheet as of December 31, 2016.
Use of Estimates, Policy	Use of Estimates The Company's Consolidated Financial Statements have been prepared in accordance with United States Generally Accepted Accounting Principles. The preparation of the Company's Consolidated Financial Statements requires the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities and the related disclosure of contingent assets and liabilities at the date of the Consolidated Financial Statements and reported amounts of revenues and expenses during the reporting period. The more significant areas requiring the use of management estimates and assumptions relate to metal prices and mineral reserves that are the basis for future cash flow estimates utilized in impairment calculations and units-of production amortization calculations, environmental, reclamation and closure obligations, estimates of recoverable silver and gold in leach pad inventories, estimates of fair value for certain reporting units and asset impairments, valuation allowances for deferred tax assets, and the fair value and accounting treatment of financial instruments, equity securities, the allocation of fair value to assets and liabilities assumed in connection with business combinations, and derivative instruments. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances. Accordingly, actual results will differ from the amounts estimated in these financial statements.
Consolidation, Policy	Principles of Consolidation The Consolidated Financial Statements include the wholly-owned subsidiaries of the Company, the most significant of which are Coeur Mexicana S.A. de C.V., Coeur Rochester, Inc., Coeur Alaska, Inc., Wharf Resources (U.S.A.), Inc., Coeur Silvertip Holdings Ltd., and Coeur Capital, Inc. All intercompany balances and transactions have been eliminated. The Company's investments in entities in which it has less than 20% ownership interest are accounted for using the cost method.
Cash and Cash Equivalents, Policy	Cash and Cash Equivalents Cash and cash equivalents include all highly-liquid investments with an original maturity of three months or less. The Company minimizes its credit risk by investing its cash and cash equivalents with major U.S. and international banks and financial institutions located principally in the United States with a minimum credit rating of A1, as defined by Standard & Poor’s. The Company’s management believes that no concentration of credit risk exists with respect to the investment of its cash and cash equivalents.
Receivables, Policy	Receivables Trade receivables and other receivable balances are reported at outstanding principal amounts, net of an allowance for doubtful accounts, if deemed necessary. Management evaluates the collectability of receivable account balances to determine the allowance, if any. Management considers the other party's credit risk and financial condition, as well as current and projected economic and market conditions, in determining the amount of the allowance. Receivable balances are written off when management determines that the balance is uncollectible.
Ore on Leach Pad Policy	Ore on Leach Pads The heap leach process extracts silver and gold by placing ore on an impermeable pad and applying a diluted cyanide solution that dissolves a portion of the contained silver and gold, which are then recovered in metallurgical processes. The Company uses several integrated steps to scientifically measure the metal content of ore placed on the leach pads. As the ore body is drilled in preparation for the blasting process, samples are taken of the drill residue which are assayed to determine estimated quantities of contained metal. The Company estimates the quantity of ore by utilizing global positioning satellite survey techniques. The Company then processes the ore through crushing facilities where the output is again weighed and sampled for assaying. A metallurgical reconciliation with the data collected from the mining operation is completed with appropriate adjustments made to previous estimates. The crushed ore is then transported to the leach pad for application of the leaching solution. As the leach solution is collected from the leach pads, it is continuously sampled for assaying. The quantity of leach solution is measured by flow meters throughout the leaching and precipitation process. After precipitation, the product is converted to doré at the Rochester mine and a form of gold concentrate at the Wharf mine, representing the final product produced by each mine. The inventory is stated at lower of cost or market, with cost being determined using a weighted average cost method. The historical cost of metal expected to be extracted within twelve months is classified as current and the historical cost of metals contained within the broken ore expected to be extracted beyond twelve months is classified as non-current. Ore on leach pads is valued based on actual production costs incurred to produce and place ore on the leach pad, less costs allocated to minerals recovered through the leach process. The estimate of both the ultimate recovery expected over time and the quantity of metal that may be extracted relative to the time the leach process occurs requires the use of estimates, which are inherently inaccurate due to the nature of the leaching process. The quantities of metal contained in the ore are based upon actual weights and assay analysis. The rate at which the leach process extracts gold and silver from the crushed ore is based upon laboratory testing and actual experience of more than twenty years of leach pad operations at the Rochester mine and thirty years of leach pad operations at the Wharf mine. The assumptions used by the Company to measure metal content during each stage of the inventory conversion process includes estimated recovery rates based on laboratory testing and assaying. The Company periodically reviews its estimates compared to actual experience and revises its estimates when appropriate. Variations between actual and estimated quantities resulting from changes in assumptions and estimates that do not result in write-downs to net realizable value are accounted for on a prospective basis.
Metal and Other Inventory Policy	Metal and Other Inventory Inventories include concentrate, doré, and operating materials and supplies. The classification of inventory is determined by the stage at which the ore is in the production process. All inventories are stated at the lower of cost or market, with cost being determined using a weighted average cost method. Concentrate and doré inventory includes product at the mine site and product held by refineries. Metal inventory costs include direct labor, materials, depreciation, depletion and amortization as well as overhead costs relating to mining activities.
Property, Plant and Equipment, Policy	Property, Plant, and Equipment Expenditures for new facilities, assets acquired pursuant to capital leases, new assets or expenditures that extend the useful lives of existing facilities are capitalized and depreciated using the straight-line method at rates sufficient to depreciate such costs over the shorter of estimated productive lives of such facilities, lease term, or the useful life of the individual assets. Productive lives range from 7 to 30 years for buildings and improvements and 3 to 10 years for machinery and equipment. Certain mining equipment is depreciated using the units-of-production method based upon estimated total proven and probable reserves.
Operational Mining Properties and Mine Policy	Mining Properties and Mine Development Capitalization of mine development costs begins once all operating permits have been secured, mineralization is classified as proven and probable reserves and a final feasibility study has been completed. Mine development costs include engineering and metallurgical studies, drilling and other related costs to delineate an ore body, the removal of overburden to initially expose an ore body at open pit surface mines and the building of access ways, shafts, lateral access, drifts, ramps and other infrastructure at underground mines. Costs incurred before mineralization are classified as proven and probable reserves are capitalized if a project is in pre-production phase or expensed and classified as Exploration or Pre-development if the project is not yet in pre-production. Mine development costs are amortized using the units of production method over the estimated life of the ore body based on recoverable ounces to be mined from proven and probable reserves. Interest expense allocable to the cost of developing mining properties and to construct new facilities is capitalized until assets are ready for their intended use. Drilling and related costs incurred at the Company’s operating mines are expensed as incurred in Exploration, unless the Company can conclude with a high degree of confidence, prior to the commencement of a drilling program, that the drilling costs will result in the conversion of a mineral resource into proven and probable reserves. The Company’s assessment is based on the following factors: results from previous drill programs; results from geological models; results from a mine scoping study confirming economic viability of the resource; and preliminary estimates of mine inventory, ore grade, cash flow and mine life. In addition, the Company must have all permitting and/or contractual requirements necessary to have the right to and/or control of the future benefit from the targeted ore body. The costs of a drilling program that meet these criteria are capitalized as mine development costs. Drilling and related costs of approximately $11.7 million and $12.9 million at December 31, 2017 and 2016, respectively, were capitalized. The cost of removing overburden and waste materials to access the ore body at an open pit mine prior to the production phase are referred to as “pre-stripping costs.” Pre-stripping costs are capitalized during the development of an open pit mine. Stripping costs incurred during the production phase of a mine are variable production costs that are included as a component of inventory to be recognized in Costs applicable to sales in the same period as the revenue from the sale of inventory.
Mineral Interests Policy	Mineral Interests Significant payments related to the acquisition of land and mineral rights are capitalized. Prior to acquiring such land or mineral rights, the Company generally makes a preliminary evaluation to determine that the property has significant potential to develop an economic ore body. The time between initial acquisition and full evaluation of a property’s potential is variable and is determined by many factors including: location relative to existing infrastructure, the property’s stage of development, geological controls and metal prices. If a mineable ore body is discovered, such costs are amortized when production begins using the units of- production method based on recoverable ounces to be mined from proven and probable reserves. If no mineable ore body is discovered, such costs are expensed in the period in which it is determined the property has no future economic value.
Impairment or Disposal of Long-Lived Assets, Policy	Write-downs We review and evaluate our long-lived assets for impairment whenever events or changes in circumstances indicate that the related carrying amounts may not be recoverable. Asset impairment is considered to exist if the total estimated undiscounted pretax future cash flows are less than the carrying amount of the asset. In estimating future cash flows, assets are grouped at the lowest level for which there is identifiable cash flows that are largely independent of future cash flows from other asset groups. An impairment loss is measured by discounted estimated future cash flows, and recorded by reducing the asset's carrying amount to fair value. Future cash flows are estimated based on estimated quantities of recoverable minerals, expected silver and gold prices (considering current and historical prices, trends and related factors), production levels, operating costs, capital requirements and reclamation costs, all based on life-of-mine plans. During 2016 and 2015, we recorded impairments of $4.4 million and $246.6 million , respectively, to reduce the carrying value of mining properties and property, plant and equipment as part of Write-downs. Existing proven and probable reserves and value beyond proven and probable reserves, including mineralization other than proven and probable reserves are included when determining the fair value of mine site asset groups at acquisition and, subsequently, in determining whether the assets are impaired. The term “recoverable minerals” refers to the estimated amount of silver and gold that will be obtained after taking into account losses during ore processing and treatment. Estimates of recoverable minerals from exploration stage mineral interests are risk adjusted based on management’s relative confidence in such materials. The ability to achieve the estimated quantities of recoverable minerals from exploration stage mineral interests involves further risks in addition to those risk factors applicable to mineral interests where proven and probable reserves have been identified, due to the lower level of confidence that the identified mineralized material could ultimately be mined economically. Assets classified as exploration potential have the highest level of risk that the carrying value of the asset can be ultimately realized, due to the still lower level of geological confidence and economic modeling. Silver and gold prices are volatile and affected by many factors beyond the Company’s control, including prevailing interest rates and returns on other asset classes, expectations regarding inflation, speculation, currency values, governmental decisions regarding precious metals stockpiles, global and regional demand and production, political and economic conditions and other factors may affect the key assumptions used in the Company’s impairment testing. Various factors could impact our ability to achieve forecasted production levels from proven and probable reserves. Additionally, production, capital and reclamation costs could differ from the assumptions used in the cash flow models used to assess impairment. Actual results may vary from the Company’s estimates and result in additional Write-downs .
Mining Properties Held for Sale Policy	Properties Held for Sale In determining whether to classify a property as held for sale, the Company considers whether: (i) management has committed to a plan to sell the property; (ii) the investment is available for immediate sale, in its present condition; (iii) the Company has initiated a program to locate a buyer; (iv) the Company believes that the sale of the property is probable; (v) the Company has received a significant non-refundable deposit for the purchase of the property; (vi) the Company is actively marketing the property for sale at a price that is reasonable in relation to its estimated fair value; and (vii) actions required for the Company to complete the plan indicate that it is unlikely that any significant changes will be made to the plan. If all of the above criteria are met, the Company classifies the property as held for sale. When these criteria are met, the Company suspends depreciation on the properties held for sale. The properties held for sale and associated liabilities are classified separately on the consolidated balance sheets. Such properties are recorded at the lesser of the carrying value or estimated fair value less costs to sell. Additionally, if the sale represents a strategic shift that has (or will have) a major effect on the entity's results and operations, the assets, liabilities and operations for the periods presented are classified on the consolidated balance sheets as held for sale and consolidated statements of operations and comprehensive income (loss) as discontinued operations for all periods presented. At December 31, 2017, the San Bartolomé mine met the held for sale criteria. Furthermore, considering that San Bartolomé is one of the Company’s current five operating mines and the expected sale would represent an exit from the South American region, the Company has determined that the expected disposal of Manquiri and the San Bartolomé mine through a sale of all of the issued and outstanding shares of Manquiri represents a strategic shift to a North America-focused mining portfolio that is expected to have a major effect on the entity's results and operations, therefore, the applicable assets, liabilities and operations for the periods presented are classified on the consolidated balance sheets as held for sale and the consolidated statements of operations and comprehensive income (loss) as discontinued operations for all periods presented. Results of operations for the year ended December 31, 2017 include a $3.4 million write-down of assets to expected realizable value, included in Income (loss) from discontinued operations.
Restricted Assets Policy	Restricted Assets The Company, under the terms of its self-insurance and bonding agreements with certain banks, lending institutions and regulatory agencies, is required to collateralize certain portions of its obligations. The Company has collateralized these obligations by assigning certificates of deposit that have maturity dates ranging from three months to a year, to the respective institutions or agencies. At December 31, 2017 and 2016, the Company held certificates of deposit and cash under these agreements of $20.8 million and $17.6 million , respectively. The ultimate timing of the release of the collateralized amounts is dependent on the timing and closure of each mine and repayment of the facility. In order to release the collateral, the Company must seek approval from certain government agencies responsible for monitoring the mine closure status. Collateral could also be released to the extent the Company is able to secure alternative financial assurance satisfactory to the regulatory agencies. The Company believes there is a reasonable probability that the collateral will remain in place beyond a twelve-month period and has therefore classified these investments as long-term.
Asset Retirement Obligation Policy	Reclamation The Company recognizes obligations for the expected future retirement of tangible long-lived assets and other associated asset retirement costs. The fair value of a liability for an asset retirement obligation will be recognized in the period in which it is incurred if a reasonable estimate of fair value can be made. The fair value of the liability is added to the carrying amount of the associated asset and this additional carrying amount is depreciated over the life of the asset. An accretion cost, representing the increase over time in the present value of the liability, is recorded each period in Pre-development, reclamation, and other . As reclamation work is performed or liabilities are otherwise settled, the recorded amount of the liability is reduced. Future remediation costs for inactive mines are accrued based on management’s best estimate at the end of each period of the discounted costs expected to be incurred at the site. Such cost estimates include, where applicable, ongoing care and maintenance and monitoring costs. Changes in estimates are reflected prospectively in the period an estimate is revised.
Revenue Recognition, Policy	Revenue Recognition Revenue is recognized, net of treatment and refining charges, when persuasive evidence of an arrangement exists, delivery has occurred, the price is fixed or determinable, no obligations remain, and collection is probable. Under the Company’s concentrate sales contracts with third-party smelters, gold and silver prices are set on a specified future quotational period, typically one to three months, after the shipment date based on market prices. Revenue and Costs Applicable to Sales are recorded on a gross basis under these contracts at the time title passes to the buyer based on the forward price for the expected settlement period. The contracts, in general, provide for provisional payment based upon provisional assays and forward metal prices. Final settlement is based on the average applicable price for the specified future quotational period and generally occurs from three to six months after shipment. The Company’s provisionally priced sales contain an embedded derivative that is required to be separated from the host contract for accounting purposes. The host contract is the receivable from the sale of concentrates measured at the forward price at the time of sale. The embedded derivative does not qualify for hedge accounting and is adjusted to fair value through revenue each period until the date of final gold and silver settlement.
Foreign Currency Transactions and Translations Policy	Foreign Currency The assets and liabilities of the Company’s foreign subsidiaries are measured using U.S. dollars as their functional currency. Revenues and expenses are remeasured at the average exchange rate for the period. Foreign currency gains and losses are included in the determination of net income or loss.
Derivatives, Policy	Derivative Financial Instruments The Company recognizes all derivatives as either assets or liabilities on the balance sheet and measures those instruments at fair value. Changes in the value of derivative instruments are recorded each period in the Consolidated Statement of Comprehensive Income (Loss) in Fair value adjustments, net . Management applies judgment in estimating the fair value of instruments that are highly sensitive to assumptions regarding commodity prices, market volatilities, and foreign currency exchange rates.
Share-based Compensation, Option and Incentive Plans Policy	Stock-based Compensation The Company estimates the fair value of stock options using the Black-Scholes option pricing model and stock appreciation rights (“SARs”) awards using market comparison. Stock options granted are accounted for as equity-based awards and SARs are accounted for as liability-based awards. The value of the SARs is remeasured at each reporting date. The Company estimates forfeitures of stock-based awards based on historical data and periodically adjusts the forfeiture rate. The adjustment of the forfeiture rate is recorded as a cumulative adjustment in the period the forfeiture estimate is changed. Compensation costs related to stock based compensation are included in General and administrative expenses , Costs applicable to sales , and Property, plant, and equipment, net as deemed appropriate. The fair value of restricted stock based on the Company's stock price on the date of grant. The fair value of performance leverage stock units (“PSUs”) with market conditions is determined using a Monte Carlo simulation model. Stock based compensation expense related to awards with a market or performance condition is generally recognized over the vesting period of the award utilizing the graded vesting method, while all other awards are recognized on a straight-line basis. The Company's estimates may be impacted by certain variables including, but not limited to, stock price volatility, employee stock option exercise behaviors, additional stock option grants, estimates of forfeitures, the Company's performance, and related tax impacts.
Income Tax, Policy	Income and Mining Taxes The Company uses an asset and liability approach which results in the recognition of deferred tax liabilities and assets for the expected future tax consequences or benefits of temporary differences between the financial reporting basis and the tax basis of assets and liabilities, as well as operating loss and tax credit carryforwards, using enacted tax rates in effect in the years in which the differences are expected to reverse. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of its deferred tax assets will not be realized. Management considers the scheduled reversal of deferred tax liabilities, projected future taxable income and tax planning strategies in making this assessment. A valuation allowance has been provided for the portion of the Company’s net deferred tax assets for which it is more likely than not that they will not be realized. On December 22, 2017, the United States (“U.S.”) enacted significant changes to U.S. tax law following the passage and signing of H.R.1, “An Act to Provide for Reconciliation Pursuant to Titles II and V of the Concurrent Resolution on the Budget for Fiscal Year 2018” which makes widespread changes to the Internal Revenue Code, including, among other items, a reduction in the federal corporate tax rate to 21%, effective January 1, 2018. The Company is subject to the provisions of the Financial Accounting Standards Board (“FASB”) ASC 740-10, Income Taxes, which requires that the effect on deferred tax assets and liabilities of a change in tax rates be recognized in the period the tax rate change was enacted. The carrying value of our U.S. deferred taxes is determined by the enacted U.S. corporate income tax rate. Consequently, the reduction in the U.S. corporate income tax rate impacts the carrying value of our deferred tax assets. Under the new corporate income tax rate of 21%, the U.S. net deferred tax asset position will decrease as will the related valuation allowance. The net effect of the tax reform enactment on the financial statements is minimal. While there are certain aspects of the new tax law that will not impact the Company based on its tax attributes, such as the one-time transition tax on unremitted foreign earnings; there are other aspects of the law, which could have a positive impact on the Company’s future U.S. income tax expense, including the elimination of the U.S. corporate alternative minimum tax. However, uncertainty regarding the impact of tax reform remains, as a result of factors including future regulatory and rulemaking processes, the prospects of additional corrective or supplemental legislation, potential trade or other litigation, and other factors.
Recent Accounting Standards	Recent Accounting Standards In January 2017, the FASB issued ASU 2017-01, “ Business Combinations (Topic 805) - Clarifying the Definition of a Business, ” which clarifies the definition of a business to assist entities in the evaluation of acquisitions and disposals of assets or businesses. These changes become effective for the Company’s fiscal year beginning January 1, 2018. The Company is currently evaluating this standard and does not expect this ASU to materially impact the Company’s consolidated net income, financial position or cash flows. In November 2016, the FASB issued ASU 2016-18, “ Statement of Cash Flows (Topic 230) - Restricted Cash, ” which will require entities to show the changes in the total of cash, cash equivalents, restricted cash and restricted cash equivalents in the statement of cash flows. These changes become effective for the Company’s fiscal year beginning January 1, 2018. The Company is currently evaluating this standard and does not expect this ASU to materially impact the Company’s consolidated statement of cash flows. In August 2016, the FASB issued ASU 2016-15, “ Statement of Cash Flows (Topic 230) - Classification of Certain Cash Receipts and Cash Payments, ” which provides guidance on presentation and classification of certain cash receipts and payments in the statement of cash flows. These changes become effective for the Company’s fiscal year beginning January 1, 2018. The Company is currently evaluating this standard and does not expect this ASU to materially impact the Company’s consolidated net income, financial position or cash flows. In March 2016, the FASB issued ASU 2016-09, “ Improvements to Employee Share-Based Payment Accounting, ” which amends several aspects of the accounting for share-based payment transaction, including income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. These changes became effective for the Company’s fiscal year beginning January 1, 2017, and the Company’s adoption had no impact on the Company’s consolidated financial position, results of operations, and cash flows. In February 2016, the FASB issued ASU 2016-02, “ Leases, ” which will require lessees to recognize assets and liabilities for the rights and obligations created by most leases on the balance sheet. These changes become effective for the Company’s fiscal year beginning January 1, 2019. Modified retrospective adoption for all leases existing at, or entered into after, the date of initial application, is required with an option to use certain transition relief. The Company is currently evaluating the potential impact of implementing these changes on the Company’s consolidated financial position, results of operations, and cash flows. In January 2016, the FASB issued ASU 2016-01, “ Recognition and Measurement of Financial Assets and Financial Liabilities, ” which requires entities to measure equity investments that do not result in consolidation and are not accounted for under the equity method at fair value and recognize any changes in fair value in net income. This new guidance also updates certain disclosure requirements for these investments. These changes become effective for the Company’s fiscal year beginning January 1, 2018, and will result in a reclassification of unrealized holding gains and losses and deferred income taxes related to investments in marketable equity securities from Accumulated other comprehensive income (loss) to Accumulated deficit in the Consolidated Balance Sheets on that date. After the initial reclassification, unrealized holding gains and losses and deferred income taxes related to investments in marketable equity securities will be recognized in Fair value adjustments, net in the Consolidated Statements of Comprehensive Income (Loss). In July 2015, the FASB issued ASU 2015-11, “ Simplifying the Measurement of Inventory, ” which provides a revised, simpler measurement for inventory to be measured at the lower of cost and net realizable value. These changes become effective for the Company’s fiscal year beginning January 1, 2018. The Company is currently evaluating this standard and does not expect this ASU to materially impact the Company’s consolidated net income, financial position or cash flows. In May 2014, the FASB issued ASU 2014-09, “ Revenue from Contracts with Customers ” , which has subsequently been amended several times, to update revenue guidance under the newly-created ASC 606. The new standard provides a five-step approach to be applied to all contracts with customers and also requires expanded disclosures about revenue recognition. These changes become effective for the Company’s fiscal year beginning January 1, 2018. The Company has elected the modified retrospective method for adoption of ASC 606. The Company has substantially completed its analysis of the new standard and reviewed potential impacts from timing of when control is transferred to customers, variable consideration on concentrate sales and classification of refining fees. Currently, revenue is recognized for these contracts based on varying contractual terms indicating when risk of loss and title have transferred to the buyer. Upon adoption, revenue related to concentrate sales will typically be recognized upon completion of loading the material for shipment to the customer and satisfaction of the Company’s significant performance obligations. Based on our current analysis, the estimate of revenue recognized for concentrates will remain unchanged as sales will initially be recorded on a provisional basis based on the forward prices for the estimated month of settlement and the Company’s estimated metal quantities delivered based on weighing and assay data. The Company believes changes in the underlying weight and metal content are not significant to the sale as a whole and therefore do not preclude the recognition of revenue upon transfer of control. The Company’s provisional gold and copper concentrate sales will continue to contain an embedded derivative that is required to be separated from the host contract for accounting purposes. The host contract is the receivable from the sale of the gold concentrates at the prevailing indices’ prices at the time of sale. The embedded derivative, which does not qualify for hedge accounting, is marked to market through earnings each period prior to final settlement. The Company does not expect the adoption of ASC 606 to materially impact the Company’s consolidated net income, financial position or cash flows.

Write-Downs (Tables)

Write-Downs (Tables)	12 Months Ended
	Dec. 31, 2017
Impairment or Disposal of Tangible Assets Disclosure [Abstract]
Details of Impairment of Long-Lived Assets Held and Used by Asset [Table Text Block]	Year ended December 31, 2017 2016 2015 Mining properties Palmarejo $ — $ — $ 205,803 Coeur Capital — 4,446 22,118 — 4,446 227,921 Property, plant, and equipment Palmarejo $ — $ — $ 18,704 Total $ — $ 4,446 $ 246,625

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Financial information relating to the reporting segments	Financial information relating to the Company’s segments is as follows (in thousands): Year ended December 31, 2017 Palmarejo Rochester Silvertip Kensington Wharf Other Total Revenue Metal sales $ 274,809 $ 152,680 $ — $ 154,469 $ 125,901 $ 1,739 $ 709,598 Costs and Expenses Costs applicable to sales (1) 146,176 107,921 — 116,096 69,322 745 440,260 Amortization 73,744 22,306 — 36,022 13,012 1,465 146,549 Exploration 11,924 1,352 — 8,604 320 8,111 30,311 Other operating expenses 1,263 3,394 153 1,412 2,468 43,862 52,552 Other income (expense) Loss on debt extinguishment — — — — — (9,342 ) (9,342 ) Fair value adjustments, net — (864 ) — — — — (864 ) Interest expense, net (487 ) (496 ) (2,212 ) (413 ) (66 ) (12,766 ) (16,440 ) Other, net (851 ) 2,193 1,142 (922 ) 172 24,909 26,643 Income and mining tax (expense) benefit (24,330 ) (1,028 ) (932 ) — (3,936 ) 1,228 (28,998 ) Income (loss) from continuing operations $ 16,034 $ 17,512 $ (2,155 ) $ (9,000 ) $ 36,949 $ (48,415 ) $ 10,925 Income (loss) from discontinued operations $ — $ — $ — $ — $ — $ (12,244 ) $ (12,244 ) Segment assets (2) $ 377,621 $ 239,223 $ 339,369 $ 212,588 $ 104,010 $ 71,742 $ 1,344,553 Capital expenditures $ 29,902 $ 40,874 $ 17,684 $ 36,248 $ 8,844 $ 3,182 $ 136,734 (1) Excludes amortization (2) Segment assets include receivables, prepaids, inventories, property, plant and equipment, and mineral interests Year ended December 31, 2016 Palmarejo Rochester Kensington Wharf Other Total Revenue Metal sales $ 141,273 $ 139,945 $ 146,593 $ 136,678 $ 4,128 $ 568,617 Royalties — — — — 3,280 3,280 141,273 139,945 146,593 136,678 7,408 571,897 Costs and Expenses Costs applicable to sales (1) 80,820 89,726 96,731 66,379 1,719 335,375 Amortization 36,599 21,838 34,787 20,621 2,683 116,528 Exploration 5,063 841 3,487 2 3,537 12,930 Write-downs — — — — 4,446 4,446 Other operating expenses 1,213 2,801 1,038 2,238 36,396 43,686 Other income (expense) Loss on debt extinguishment — — — — (21,365 ) (21,365 ) Fair value adjustments, net (5,814 ) (4,133 ) — — (1,634 ) (11,581 ) Interest expense, net (1,187 ) (664 ) (128 ) (69 ) (34,848 ) (36,896 ) Other, net (12,125 ) (3,859 ) (25 ) 17 16,090 98 Income and mining tax (expense) benefit 45,085 (2,785 ) — (4,293 ) (4,760 ) 33,247 Income (loss) from continuing operations $ 43,537 $ 13,298 $ 10,397 $ 43,093 $ (87,890 ) $ 22,435 Income (loss) from discontinued operations $ — $ — $ — $ — $ 32,917 $ 32,917 Segment assets (2) $ 436,642 $ 219,009 $ 199,232 $ 105,901 $ 84,938 $ 1,045,722 Capital expenditures $ 35,810 $ 16,446 $ 36,826 $ 4,812 $ 488 $ 94,382 (1) Excludes amortization (2) Segment assets include receivables, prepaids, inventories, property, plant and equipment, and mineral interests Year ended December 31, 2015 Palmarejo Rochester Kensington Wharf Other Total Revenue Metal sales 169,133 143,930 148,710 84,052 8,732 $ 554,557 Royalties — — — — 6,850 6,850 169,133 143,930 148,710 84,052 15,582 561,407 Costs and Expenses Costs applicable to sales (1) 138,476 103,994 105,640 52,197 3,520 403,827 Amortization 32,423 23,906 42,240 16,378 11,006 125,953 Exploration 4,533 1,324 2,596 134 2,934 11,521 Write-downs 224,507 — — — 22,118 246,625 Other operating expenses 1,293 2,948 1,301 1,717 41,581 48,840 Other income (expense) Loss on debt extinguishment — — — — 15,916 15,916 Fair value adjustments, net 3,160 818 — — 1,224 5,202 Interest expense, net (4,269 ) (748 ) (218 ) — (39,743 ) (44,978 ) Other, net (10,968 ) (13 ) 7 143 (6,836 ) (17,667 ) Income and mining tax (expense) benefit 37,597 (1,497 ) — (857 ) (6,168 ) 29,075 Income (loss) from continuing operations (206,579 ) 10,318 (3,278 ) 12,912 (101,184 ) (287,811 ) Income (loss) from discontinued operations — — — — (79,372 ) (79,372 ) Segment assets (2) 406,648 190,714 197,873 113,305 103,629 1,012,169 Capital expenditures 35,991 25,330 23,834 3,211 607 88,973 (1) Excludes amortization (2) Segment assets include receivables, prepaids, inventories, property, plant and equipment, and mineral interests Assets December 31, 2017 December 31, 2016 Total assets for reportable segments $ 1,344,553 $ 1,045,722 Cash and cash equivalents 192,032 118,312 Other assets 164,590 154,875 Total consolidated assets $ 1,701,175 $ 1,318,909
Consolidated Assets	Assets December 31, 2017 December 31, 2016 Total assets for reportable segments $ 1,344,553 $ 1,045,722 Cash and cash equivalents 192,032 118,312 Other assets 164,590 154,875 Total consolidated assets $ 1,701,175 $ 1,318,909
Long Lived Assets by Country	Geographic Information Long-Lived Assets December 31, 2017 December 31, 2016 Mexico $ 370,188 $ 397,697 United States 377,768 338,897 Canada 331,440 — Argentina 229 10,228 Other 4,681 8,547 Total $ 1,084,306 $ 755,369
Revenue by Country	Revenue Year ended December 31, 2017 2016 2015 United States $ 433,050 $ 423,216 $ 376,692 Mexico 274,809 142,198 171,911 Australia 1,739 4,128 8,732 Other — 2,355 4,072 Total $ 709,598 $ 571,897 $ 561,407 The Company's doré, as well as the concentrate product produced by the Wharf mine, is refined into gold and silver bullion according to benchmark standards set by the LBMA, which regulates the acceptable requirements for bullion traded in the London precious metals markets. The Company then sells its silver and gold bullion to multi-national banks, bullion trading houses, and refiners across the globe. The Company has eight trading counterparties at December 31, 2017. The Company's sales of doré or concentrate product produced by the Palmarejo, Rochester, and Wharf mines amounted to approximately 78% , 74% , and 72% of total metal sales for the years ended December 31, 2017, 2016, and 2015, respectively. Generally, the loss of a single bullion trading counterparty would not adversely affect the Company due to the liquidity of the markets and availability of alternative trading counterparties. The Company's gold concentrate products from the Kensington mine are primarily sold to one smelter under a purchase and sale agreement, and the smelter pays the Company for the metals recovered from the concentrates. The Company’s sales of concentrate produced by the Kensington mine amounted to approximately 22% , 26% , and 27% of total metal sales for the years ended December 31, 2017, 2016, and 2015, respectively. While the loss of a smelter may have a material adverse effect if alternate smelters are not available or if the failure to engage a new smelter results in a delay in the sale or purchase of Kensington concentrate, the Company believes that there is sufficient global capacity available to address the loss of a smelter. The following table indicates customers that represent 10% or more of total sales of metal for at least one of the years December 31, 2017, 2016, and 2015 (in millions): Year ended December 31, Customer 2017 2016 2015 Segments reporting revenue China National Gold $ 137.5 $ 126.6 $ 126.2 Kensington Republic Metal Corporation 132.4 47.3 0.6 Palmarejo,Wharf Asahi (formerly Johnson Matthey) 124.1 62.6 84.2 Palmarejo, Wharf, Rochester Techemet Metal Trading 104.8 40.7 — Rochester, Wharf TD Securities — 15.5 81.3 Palmarejo, Rochester INTL Commodities 9.6 76.6 33.1 Palmarejo, Rochester, Wharf Mitsui & Co. — — 137.7 Palmarejo, Rochester

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	The following table sets forth the weighted average fair value of stock options and the assumptions used to estimate the fair value of the stock options using the Black-Scholes option valuation model: 2017 2016 2015 Weighted average fair value of stock options granted $ 3.91 $ 1.06 $ 2.65 Volatility 67.07 % 61.75 % 55.71 % Expected life in years 4.00 3.99 4.75 Risk-free interest rate 1.69 % 1.50 % 1.51 % Dividend yield — — —
Schedule of Stock-based Compensation, Stock Options and Stock Appreciation Rights Award Activity	The following table summarizes stock option and SAR activity for the years ended December 31, 2017, 2016, and 2015: Stock Options SARs Shares Weighted Average Exercise Price Shares Weighted Outstanding at December 31, 2014 598,346 $ 16.26 46,572 $ 14.06 Granted 310,028 5.57 — — Canceled/forfeited (238,365 ) 12.69 — — Outstanding at December 31, 2015 670,009 12.58 46,572 14.06 Granted 183,251 2.19 — — Exercised (170,897 ) 7.81 — — Canceled/forfeited (25,752 ) 16.76 (4,420 ) 13.31 Outstanding at December 31, 2016 656,611 10.76 42,152 14.14 Granted 14,820 7.60 — — Exercised (26,966 ) 3.28 — — Canceled/forfeited (27,019 ) 21.88 — — Outstanding at December 31, 2017 617,446 $ 10.53 42,152 $ 14.14
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]	The following table summarizes outstanding stock options as of December 31, 2017. Range of Exercise Price Number Outstanding Weighted Average Exercise Price Weighted Average Remaining Contractual Life (Years) Aggregate Intrinsic Value (in thousands) $ 0.00-$10.00 434,520 $ 5.45 7.24 $10.00-$20.00 47,051 12.73 5.68 $20.00-$30.00 133,692 25.64 4.33 $30.00-$40.00 — — 0.00 $40.00-$50.00 2,183 48.50 0.03 Outstanding 617,446 $ 10.53 6.47 $ 1,127 Vested and expected to vest 601,545 $ 10.71 6.42 $ 1,065 Exercisable 427,730 $ 13.62 5.81 $ 377
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]	The following table summarizes restricted stock activity for the years ended December 31, 2017, 2016, and 2015 : Restricted Stock Number of Shares Weighted Average Grant Date Fair Value Outstanding at December 31, 2014 901,999 $ 12.19 Granted 1,180,384 5.49 Vested (317,122 ) 13.38 Cancelled/Forfeited (257,849 ) 7.59 Outstanding at December 31, 2015 1,507,412 7.49 Granted 1,768,746 3.72 Vested (681,829 ) 8.51 Cancelled/Forfeited (160,414 ) 7.16 Outstanding at December 31, 2016 2,433,915 4.48 Granted 799,165 8.78 Vested (1,023,708 ) 5.14 Cancelled/Forfeited (53,527 ) 5.90 Outstanding at December 31, 2017 2,155,845 $ 5.72
Share-based Compensation, Performance Shares Award Outstanding Activity [Table Text Block]	The following table summarizes performance shares activity for the years ended December 31, 2017, 2016, and 2015 : Performance Shares Number of Shares Weighted Average Grant Date Fair Value Outstanding at December 31, 2014 516,830 $ 17.61 Granted 809,293 6.97 Cancelled/Forfeited (190,988 ) 15.62 Outstanding at December 31, 2015 1,135,135 10.35 Granted 1,437,077 1.79 Cancelled/Forfeited (199,580 ) 17.98 Outstanding at December 31, 2016 2,372,632 4.53 Granted 316,213 11.58 Vested (66,696 ) 14.18 Cancelled/Forfeited (253,868 ) 11.56 Outstanding at December 31, 2017 2,368,281 $ 4.44

Income and Mining Taxes (Tables

Income and Mining Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit)	The components of Income (loss) before income taxes are below: Year ended December 31, In thousands 2017 2016 2015 United States $ 10,099 $ (13,299 ) $ (44,101 ) Foreign 29,824 2,487 (272,785 ) Total $ 39,923 $ (10,812 ) $ (316,886 ) The components of the consolidated Income and mining tax (expense) benefit from continuing operations are below: Year ended December 31, In thousands 2017 2016 2015 Current: United States $ 1,428 $ — $ 49 United States — State mining taxes (6,016 ) (7,826 ) (4,305 ) United States — Foreign withholding tax (8,466 ) (1,838 ) — Argentina 55 10 715 Australia — 14 130 Canada 876 (1,841 ) (516 ) Mexico (30,763 ) (9,581 ) (476 ) Deferred: United States 6,367 (1,610 ) (564 ) United States — State mining taxes 1,052 748 1,952 Argentina 1,531 115 (1,197 ) Australia — (1,638 ) 3,223 Canada 104 1,338 2,875 Mexico 4,805 55,383 27,189 New Zealand 29 (27 ) — Income tax (expense) benefit $ (28,998 ) $ 33,247 $ 29,075
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation of the Company’s effective tax rate with the federal statutory tax rate for the periods indicated is below: Year ended December 31, In thousands 2017 2016 2015 Income and mining tax (expense) benefit at statutory rate $ (14,037 ) $ 3,718 $ 110,848 State tax provision from continuing operations 26 336 (2,075 ) Change in valuation allowance 86,712 40,517 (70,457 ) Effect of tax legislation (88,174 ) — — Percentage depletion 703 983 — Uncertain tax positions 2,596 (8,829 ) 170 U.S. and foreign permanent differences 2,348 (2,652 ) (3,376 ) Mineral interest related — — (18,318 ) Foreign exchange rates (14,180 ) 19,701 21,461 Foreign inflation and indexing (2,346 ) (670 ) 1,117 Foreign tax rate differences 2,929 120 (14,062 ) Mining, foreign withholding, and other taxes (11,274 ) (11,052 ) 8,141 Other, net 5,699 — (4,374 ) Legal entity reorganization — (8,925 ) — Income and mining tax (expense) benefit $ (28,998 ) $ 33,247 $ 29,075
Schedule of Deferred Tax Assets and Liabilities	At December 31, 2017 and 2016, the significant components of the Company’s deferred tax assets and liabilities are below: Year ended December 31, In thousands 2017 2016 Deferred tax liabilities: Mineral properties $ 143,773 $ 60,199 Unrealized foreign currency loss and other 1,748 — Inventory 8,258 4,629 Royalty and other long-term debt — 8,685 $ 153,779 $ 73,513 Deferred tax assets: Net operating loss carryforwards $ 155,512 $ 186,005 Property, plant, and equipment 60,286 60,828 Mining Royalty Tax 11,797 6,359 Capital loss carryforwards 19,881 6,770 Asset retirement obligation 25,309 26,951 Foreign subsidiaries - unremitted earnings 1,842 3,685 Unrealized foreign currency loss and other 218 7,413 Accrued expenses 13,512 15,193 Tax credit carryforwards 45,277 29,227 333,634 342,431 Valuation allowance (282,868 ) (338,539 ) 50,766 3,892 Net deferred tax liabilities $ 103,013 $ 69,621
Summary of Valuation Allowance	For additional information, please see the section titled “Risk Factors” included in Item 1A. Based upon this analysis, the Company has recorded valuation allowances as follows: Year ended December 31, In thousands 2017 2016 U.S. $ 235,395 $ 292,446 Argentina 3,914 6,197 Canada 2,455 1,296 Mexico 17,087 13,033 New Zealand 23,792 23,717 Other 225 1,850 $ 282,868 $ 338,539
Summary of Tax Credit Carryforwards	The Company has the following tax attribute carryforwards at December 31, 2017, by jurisdiction: In thousands U.S. Canada Mexico New Zealand Other Total Regular net operating losses $ 369,973 $ 39,833 $ 56,958 $ 86,165 $ 12,436 $ 565,365 Expiration years 2019-2037 2029-2036 2017-2026 Indefinite 2017-2021 Alternative minimum tax net operating losses 179,882 — — — — 179,882 Capital losses 72,772 14,018 — — — 86,790 Alternative minimum tax credits 1,654 — — — — 1,654 Foreign tax credits 41,730 — — — — 41,730
Summary of Income Tax Contingencies	A reconciliation of the beginning and ending amount related to unrecognized tax benefits is below (in thousands): Unrecognized tax benefits at December 31, 2015 $ 2,131 Gross increase to current period tax positions 239 Gross increase to prior period tax positions 5,187 Reductions in unrecognized tax benefits resulting from a lapse of the applicable statute of limitations (400 ) Unrecognized tax benefits at December 31, 2016 $ 7,157 Gross increase to current period tax positions 202 Gross increase to prior period tax positions 316 Reductions in unrecognized tax benefits resulting from a lapse of the applicable statute of limitations (2,351 ) Unrecognized tax benefits at December 31, 2017 $ 5,324

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Schedule of Fair Value Adjustments to Comprehensive income (Loss)	Year ended December 31, In thousands 2017 2016 2015 Rochester royalty obligation $ (864 ) $ (4,133 ) $ 818 Palmarejo royalty obligation embedded derivative — (5,866 ) 3,101 Silver and gold options — (1,582 ) 1,283 Fair value adjustments, net $ (864 ) $ (11,581 ) $ 5,202
Financial assets and liabilities measured at fair value on recurring basis	The following table presents the Company’s financial assets and liabilities measured at fair value on a recurring basis (at least annually) by level within the fair value hierarchy. Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement: Fair Value at December 31, 2017 In thousands Total Level 1 Level 2 Level 3 Assets: Equity and debt securities $ 34,837 $ 27,946 $ — $ 6,891 Other derivative instruments, net 251 — 251 — $ 35,088 $ 27,946 $ 251 $ 6,891 Liabilities: Silvertip contingent consideration $ 47,965 $ — $ — $ 47,965 Other derivative instruments, net 222 — 222 — $ 48,187 $ — $ 222 $ 47,965 Fair Value at December 31, 2016 In thousands Total Level 1 Level 2 Level 3 Assets: Equity securities $ 4,488 $ 4,209 $ — $ 279 $ 4,488 $ 4,209 $ — $ 279 Liabilities: Rochester royalty obligation $ 9,287 $ — $ — $ 9,287 Other derivative instruments, net 762 — 762 — $ 10,049 $ — $ 762 $ 9,287
Changes in the fair value of the Company's Level 3 financial liabilities	The following tables present the changes in the fair value of the Company's Level 3 financial assets and liabilities for the years ended December 31, 2017 and 2016: Year Ended December 31, 2017 In thousands Balance at the beginning of the period Additions Revaluation Settlements Gain on settlement Balance at the end of the period Assets: Equity and debt securities $ 279 $ 6,677 $ (65 ) $ — $ — $ 6,891 Liabilities: Rochester royalty obligation $ 9,287 $ — $ 864 $ (7,819 ) $ (2,332 ) $ — Silvertip contingent consideration $ — $ 47,705 $ 260 $ — $ — $ 47,965 Year Ended December 31, 2016 In thousands Balance at the beginning of the period Additions Revaluation Settlements Gain on settlement Balance at the end of the period Assets: Equity and debt securities $ 10 $ — $ 272 $ (3 ) $ — $ 279 Liabilities: Palmarejo royalty obligation embedded derivative $ 4,957 $ — $ 5,866 $ (10,823 ) $ — $ — Rochester royalty obligation $ 9,593 $ — $ 4,133 $ (4,439 ) $ — $ 9,287
Financial Assets and Liabilities not Measured at Fair Value	The fair value of financial assets and liabilities carried at book value in the financial statements at December 31, 2017 and December 31, 2016 is presented in the following table: December 31, 2017 In thousands Book Value Fair Value Level 1 Level 2 Level 3 Liabilities: 5.875% Senior Notes due 2024 (1) $ 245,088 $ 243,913 $ — $ 243,913 $ — Revolving Credit Facility (2) $ 100,000 $ 100,000 $ — $ 100,000 $ — (1) Net of unamortized debt issuance costs of $4.9 million . (2) Unamortized debt issuance costs of $1.9 million at December 31, 2017 included in Other Non-Current Assets . December 31, 2016 In thousands Book Value Fair Value Level 1 Level 2 Level 3 Liabilities: 7.875% Senior Notes due 2021 (1) $ 175,991 $ 184,373 $ — $ 184,373 $ — (1) Net of unamortized debt issuance costs and premium received of $2.0 million .

Reclamation (Tables)

Reclamation (Tables)	12 Months Ended
	Dec. 31, 2017
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligation	Changes to the Company’s asset retirement obligations for operating sites are as follows: Year ended December 31, In thousands 2017 2016 Asset retirement obligation - Beginning $ 86,754 $ 71,763 Accretion 8,769 7,030 Additions and changes in estimates 25,370 9,389 Settlements (2,094 ) (1,428 ) Asset retirement obligation - Ending $ 118,799 $ 86,754

Derivative Financial Instrume39

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative instruments, future settlement	At December 31, 2017 , the Company had the following provisionally priced sales that settle as follows: In thousands except average prices and notional ounces 2018 Thereafter Provisional silver sales contracts $ 383 $ — Average silver price $ 16.61 $ — Notional ounces 23,065 — Provisional gold sales contracts $ 53,214 $ — Average gold price $ 1,283 $ — Notional ounces 41,476 —
Fair value of the derivative instruments	The following summarizes the classification of the fair value of the derivative instruments: December 31, 2017 In thousands Prepaid expenses and other Accrued liabilities and other Current portion of royalty obligation Non-current portion of royalty obligation Provisional silver and gold sales contracts $ 251 $ 222 $ — $ — December 31, 2016 In thousands Prepaid expenses and other Accrued liabilities and other Current portion of royalty obligation Non-current portion of royalty obligation Provisional silver and gold sales contracts $ — $ 762 $ — $ —
Gain losses on derivative instruments	The following represent mark-to-market gains (losses) on derivative instruments for the years ended December 31, 2017, 2016, and 2015 , respectively (in thousands): Year ended December 31, Financial statement line Derivative 2017 2016 2015 Revenue Provisional silver and gold sales contracts $ 631 $ (239 ) $ 214 Fair value adjustments, net Palmarejo gold production royalty — (5,866 ) 3,101 Fair value adjustments, net Silver and gold options — (1,582 ) 1,283 $ 631 $ (7,687 ) $ 4,598

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2017
Business Combinations [Abstract]
Schedule of Purchase Price and Acquired Assets and Liabilities	The purchase price and acquired assets and liabilities were as follows (in thousands except share data): Common shares issued (32,667,327 at $5.78) $ 188,817 Cash 8,530 Transaction advisory fees and other acquisition costs 4,020 Total purchase price $ 201,367 Total assets acquired $ 307,193 Total liabilities assumed 105,826 Net assets acquired $ 201,367 The purchase price allocation was based on the fair value of acquired assets and liabilities as follows (in thousands): Total assets acquired 133,269 Total liabilities assumed 33,873 Net assets acquired $ 99,396 The preliminary purchase price allocation is as follows (in thousands): Common shares issued (4,191,679 at $8.59) $ 36,007 Cash 156,247 Contingent consideration 47,705 Total purchase price $ 239,959 Assets: Receivables and other assets $ 9,881 Property, plant, and equipment 29,943 Mining properties, net 288,464 328,288 Liabilities: Accounts payable and accrued liabilities 13,077 Asset retirement obligation 6,982 Debt and capital lease 20,149 Deferred income taxes 48,121 88,329 Net assets acquired $ 239,959

Other, Net (Tables)

Other, Net (Tables)	12 Months Ended
	Dec. 31, 2017
Other Income and Expenses [Abstract]
Schedule of Other Nonoperating Income (Expense)	Other, net consists of the following: Year ended December 31, In thousands 2017 2016 2015 Foreign exchange gain (loss) $ 1,281 $ (11,456 ) $ (16,021 ) Gain (loss) on sale of assets and investments (1,037 ) 11,334 (352 ) Gain on sale of the Joaquin project 21,138 — — Gain on repurchase of the Rochester royalty obligation 2,332 — — Gain on sale of Endeavor stream and other royalties 1,036 — — Impairment of equity securities (426 ) (703 ) (2,346 ) Other 2,319 923 1,052 Other, net $ 26,643 $ 98 $ (17,667 )

Assets and Liabilities Held F42

Assets and Liabilities Held For Sale (Tables)	12 Months Ended
	Dec. 31, 2017
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Major Classes of Assets and Liabilities	The major classes of line items constituting the pretax profit or loss for the years ended December 31, 2017, 2016 and 2015 are as follows: Year ended December 31, 2017 2016 2015 Revenue $ 73,065 $ 93,880 $ 84,679 Costs applicable to sales (1) 74,074 74,166 75,827 Amortization 5,899 6,633 17,798 General and administrative 172 101 198 Exploration 23 — 126 Write-downs 3,390 — 66,712 Pre-development, reclamation, and other 4,664 2,808 1,589 Interest expense, net of capitalized interest (27 ) (24 ) (725 ) Other, net 1,763 1,777 1,736 Pretax profit or loss of discontinued operations related to major classes of pretax profit (loss) (13,421 ) 11,925 (76,560 ) Pretax gain or loss on the disposal of the discontinued operation — — — Total pretax gain or loss on discontinued operations (13,421 ) 11,925 (76,560 ) Income and mining tax (expense) benefit 1,177 20,992 (2,812 ) Income (loss) from discontinued operations. $ (12,244 ) $ 32,917 $ (79,372 ) (1) Excludes amortization. The major classes of assets and liabilities associated with San Bartolomé as of December 31, 2017 and 2016 are as follows: December 31, 2017 December 31, 2016 ASSETS CURRENT ASSETS Cash and cash equivalents $ 32,931 $ 43,870 Receivables 7,295 7,016 Inventory 10,655 12,590 Prepaid expenses and other 13,415 7,966 Property, plant and equipment, net 20,240 — Mining properties, net 6,885 — 91,421 71,442 NON-CURRENT ASSETS Property, plant and equipment, net — 23,373 Mining properties, net — 8,165 Receivables — 17,225 TOTAL ASSETS $ 91,421 $ 120,205 LIABILITIES CURRENT LIABILITIES Accounts payable $ 10,974 $ 8,675 Accrued liabilities and other 5,161 6,382 Reclamation 15,179 413 Other 19,363 — 50,677 15,470 NON-CURRENT LIABILITIES Reclamation — 10,212 Deferred tax liabilities — 4,987 Other — 18,558 TOTAL LIABILITIES $ 50,677 $ 49,227

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	Year ended December 31, In thousands except per share amounts 2017 2016 2015 Net income (loss) available to common stockholders: Income (loss) from continuing operations $ 10,925 $ 22,435 $ (287,811 ) Income (loss) from discontinued operations (12,244 ) 32,917 (79,372 ) $ (1,319 ) $ 55,352 $ (367,183 ) Weighted average shares: Basic 180,096 159,853 129,639 Effect of stock-based compensation plans 4,048 3,606 — Diluted 184,144 163,459 129,639 Basic income (loss) per share: Income (loss) from continuing operations $ 0.06 $ 0.14 $ (2.22 ) Income (loss) from discontinued operations (0.07 ) 0.21 (0.61 ) Basic $ (0.01 ) $ 0.35 $ (2.83 ) Diluted income (loss) per share: Income (loss) from continuing operations $ 0.06 $ 0.14 $ (2.22 ) Income (loss) from discontinued operations (0.07 ) 0.20 (0.61 ) Diluted $ (0.01 ) $ 0.34 $ (2.83 )

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2017
Investment in Marketable Securities [Abstract]
Investments	These investments are classified as available-for-sale and are measured at fair value in the financial statements with unrealized gains and losses recorded in Other comprehensive income (loss) . At December 31, 2017 In thousands Cost Gross Unrealized Losses Gross Unrealized Gains Estimated Fair Value Equity Securities Metalla Royalty & Streaming Ltd. $ 6,294 $ — $ 1,354 $ 7,648 Corvus Gold Inc. 3,582 — 4,518 8,100 Almaden Minerals, Ltd. 3,125 (235 ) — 2,890 Northern Empire Resources Corp. 4,489 — 1,077 5,566 Rockhaven Resources, Ltd. 2,064 (193 ) — 1,871 Kootenay Silver, Inc. 738 — 1 739 Other 1,479 (453 ) 405 1,431 Equity securities $ 21,771 $ (881 ) $ 7,355 $ 28,245 Debt Securities Metalla Royalty & Streaming Ltd. $ 6,677 $ (85 ) $ — $ 6,592 Equity and debt securities $ 28,448 $ (966 ) $ 7,355 $ 34,837 At December 31, 2016 In thousands Cost Gross Unrealized Losses Gross Unrealized Gains Estimated Fair Value Kootenay Silver, Inc. $ 2,645 $ — $ — $ 2,645 Silver Bull Resources, Inc. 233 — 783 1,016 Other 229 — 598 827 Equity securities $ 3,107 $ — $ 1,381 $ 4,488
Schedule of Unrealized Loss on Investments [Table Text Block]	The following table summarizes unrealized losses on equity and debt securities for which other-than-temporary impairments have not been recognized and the fair values of those securities, aggregated by the length of time the individual securities have been in a continuous unrealized loss position, at December 31, 2017 : Less than twelve months Twelve months or more Total In thousands Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Equity securities $ 881 $ 5,662 $ — $ — $ 881 $ 5,662 Debt securities 85 6,592 — — 85 6,592

Receivables (Tables)

Receivables (Tables)	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
Receivables	Receivables consist of the following: In thousands December 31, 2017 December 31, 2016 Current receivables: Trade receivables $ 5,883 $ 5,973 Income tax receivable 7 1,038 Value added tax receivable 10,982 44,150 Other 2,197 2,254 $ 19,069 $ 53,415 Non-current receivables: Value added tax receivable $ 28,750 $ 2,088 Income tax receivable — 11,657 28,750 13,745 Total receivables $ 47,819 $ 67,160

Inventory and Ore on Leach Pa46

Inventory and Ore on Leach Pads (Tables)	12 Months Ended
	Dec. 31, 2017
Inventory Disclosure [Abstract]
Inventories	Inventory consists of the following: In thousands December 31, 2017 December 31, 2016 Inventory: Concentrate $ 6,831 $ 17,994 Precious metals 18,803 41,955 Supplies 32,596 33,487 58,230 93,436 Ore on leach pads: Current 73,752 64,167 Non-current 65,393 67,231 139,145 131,398 Total inventory and ore on leach pads $ 197,375 $ 224,834

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Property, plant and equipment	Property, plant and equipment consist of the following: In thousands December 31, 2017 December 31, 2016 Land $ 9,408 $ 7,869 Facilities and equipment 554,160 532,122 Assets under capital leases 82,753 54,297 646,321 594,288 Accumulated amortization (1) (448,001 ) (423,361 ) 198,320 170,927 Construction in progress 56,417 22,496 Property, plant and equipment, net $ 254,737 $ 193,423 (1) Includes $28.2 million and $14.8 million of accumulated amortization related to assets under capital leases at December 31, 2017 and 2016, respectively.

Mining Properties (Tables)

Mining Properties (Tables)	12 Months Ended
	Dec. 31, 2017
Mining Properties [Abstract]
Mining Properties	Mining properties consist of the following (in thousands): December 31, 2017 Palmarejo Rochester Silvertip Kensington Wharf La Preciosa Total Mine development $ 214,383 $ 193,881 $ 57,214 $ 298,749 $ 40,618 $ — $ 804,845 Accumulated amortization (146,598 ) (144,390 ) — (178,632 ) (15,748 ) — (485,368 ) 67,785 49,491 57,214 120,117 24,870 — 319,477 Mineral interests 629,303 — 245,116 — 45,837 49,085 969,341 Accumulated amortization (435,215 ) — — — (24,034 ) — — (459,249 ) 194,088 — 245,116 — 21,803 49,085 510,092 Mining properties, net $ 261,873 $ 49,491 $ 302,330 $ 120,117 $ 46,673 $ 49,085 $ 829,569 December 31, 2016 Palmarejo Rochester Kensington Wharf La Preciosa Joaquin Other Total Mine development $ 174,890 $ 165,230 $ 271,175 $ 37,485 $ — $ — $ — $ 648,780 Accumulated amortization (134,995 ) (138,244 ) (154,744 ) (11,699 ) — — (439,682 ) 39,895 26,986 116,431 25,786 — — — 209,098 Mineral interests 629,303 — — 45,837 49,085 10,000 37,272 771,497 Accumulated amortization (381,686 ) — — (19,249 ) — — (29,370 ) (430,305 ) 247,617 — — 26,588 49,085 10,000 7,902 341,192 Mining properties, net $ 287,512 $ 26,986 $ 116,431 $ 52,374 $ 49,085 $ 10,000 $ 7,902 $ 550,290

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Schedule of Future Minimum Lease Payments for Operating and Capital Leases [Table Text Block] [Table Text Block]	Minimum future lease payments under capital and operating leases with terms longer than one year are as follows: At December 31, ( In thousands) Operating leases Capital leases 2018 $ 5,220 $ 18,758 2019 5,154 13,938 2020 4,669 11,018 2021 3,798 9,646 2022 2,646 3,510 Thereafter 4,099 40 Total $ 25,586 $ 56,910 Less: imputed interest — (4,696 ) Net lease obligation $ 25,586 $ 52,214
Long term debt and capital lease obligations	December 31, 2017 December 31, 2016 In thousands Current Non-Current Current Non-Current 2024 Senior Notes, net (1) $ — $ 245,088 $ — $ — 2021 Senior Notes, net (2) — — — 175,991 Revolving Credit Facility (3) — 100,000 — — Capital lease obligations 16,559 35,481 11,955 22,691 Silvertip debt obligation 14,194 — — — $ 30,753 $ 380,569 $ 11,955 $ 198,682 (1) Net of unamortized debt issuance costs of $4.9 million at December 31, 2017 . (2) Net of unamortized debt issuance costs and premium received of $2.0 million at December 31, 2016. (3) Unamortized debt issuance costs of $1.9 million at December 31, 2017 included in Other Non-Current Assets .
Interest expenses incurred for various debt instruments	Interest Expense Year ended December 31, In thousands 2017 2016 2015 2024 Senior Notes $ 8,608 $ — $ — 2021 Senior Notes 6,221 28,871 $ 33,437 Revolving Credit Facility 885 — — 3.25% Convertible Senior Notes due 2028 — 13 54 Term Loan due 2020 — 4,939 4,715 Capital lease obligations 1,621 1,422 999 Accretion of Palmarejo gold production royalty obligation — 1,211 6,567 Amortization of debt issuance costs 809 1,933 2,257 Accretion of debt premium (71 ) (345 ) (409 ) Accretion of Silvertip contingent consideration 260 — — Other debt obligations 42 58 350 Capitalized interest (1,935 ) (1,206 ) (2,992 ) Total interest expense, net of capitalized interest $ 16,440 $ 36,896 $ 44,978

Supplemental Guarantor Inform50

Supplemental Guarantor Information (Tables)	12 Months Ended
	Dec. 31, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Schedule of Comprehensive Income (Loss)	CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS) YEAR ENDED DECEMBER 31, 2017 In thousands Coeur Mining, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ — $ 433,050 $ 276,548 $ — $ 709,598 COSTS AND EXPENSES Costs applicable to sales (1) — 293,340 146,920 — 440,260 Amortization 1,157 71,340 74,052 — 146,549 General and administrative 33,379 28 209 — 33,616 Exploration 1,592 13,689 15,030 — 30,311 Pre-development, reclamation, and other 4,705 7,497 6,734 — 18,936 Total costs and expenses 40,833 385,894 242,945 — 669,672 OTHER INCOME (EXPENSE), NET Loss on debt extinguishments (9,342 ) — — — (9,342 ) Fair value adjustments, net — (864 ) — — (864 ) Other, net 21,254 2,936 10,179 (7,726 ) 26,643 Interest expense, net of capitalized interest (14,657 ) (975 ) (8,534 ) 7,726 (16,440 ) Total other income (expense), net (2,745 ) 1,097 1,645 — (3 ) Income (loss) from continuing operations before income and mining taxes (43,578 ) 48,253 35,248 — 39,923 Income and mining tax (expense) benefit 2,170 (5,758 ) (25,410 ) — (28,998 ) Income (loss) from continuing operations (41,408 ) 42,495 9,838 — 10,925 Equity income (loss) in consolidated subsidiaries 40,089 (577 ) 4,416 (43,928 ) — Income (loss) from discontinued operations — — (12,244 ) — (12,244 ) NET INCOME (LOSS) $ (1,319 ) $ 41,918 $ 2,010 $ (43,928 ) $ (1,319 ) OTHER COMPREHENSIVE INCOME (LOSS), net of tax: Unrealized gain (loss) on marketable securities, net of tax 3,227 915 — (915 ) 3,227 Reclassification adjustments for impairment of equity securities, net of tax 426 426 — (426 ) 426 Reclassification adjustments for realized gain (loss) on sale of equity securities, net of tax 1,354 486 — (486 ) 1,354 Other comprehensive income (loss) 5,007 1,827 — (1,827 ) 5,007 COMPREHENSIVE INCOME (LOSS) $ 3,688 $ 43,745 $ 2,010 $ (45,755 ) $ 3,688 (1) Excludes amortization. CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS) YEAR ENDED DECEMBER 31, 2016 In thousands Coeur Mining, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ — $ 423,488 $ 148,409 $ — $ 571,897 COSTS AND EXPENSES Costs applicable to sales (1) — 252,836 82,539 — 335,375 Amortization 1,558 77,392 37,578 — 116,528 COSTS AND EXPENSES General and administrative 28,704 250 321 — 29,275 Exploration 1,596 6,127 5,207 — 12,930 Write-downs — — 4,446 — 4,446 Pre-development, reclamation, and other 2,044 5,839 6,528 — 14,411 Total costs and expenses 33,902 342,444 136,619 — 512,965 OTHER INCOME (EXPENSE), NET Loss on debt extinguishments (21,365 ) — — — (21,365 ) Fair value adjustments, net (1,635 ) (4,133 ) (5,813 ) — (11,581 ) Other, net 4,357 2,139 (1,314 ) (5,084 ) 98 Interest expense, net of capitalized interest (35,158 ) (861 ) (5,961 ) 5,084 (36,896 ) Total other income (expense), net (53,801 ) (2,855 ) (13,088 ) — (69,744 ) Income (loss) from continuing operations before income and mining taxes (87,703 ) 78,189 (1,298 ) — (10,812 ) Income and mining tax (expense) benefit 11,733 (7,517 ) 29,031 — 33,247 Income (loss) from continuing operations (75,970 ) 70,672 27,733 — 22,435 Equity income (loss) in consolidated subsidiaries 131,322 (4,353 ) — (126,969 ) — Income (loss) from discontinued operations — — 32,917 — 32,917 NET INCOME (LOSS) $ 55,352 $ 66,319 $ 60,650 $ (126,969 ) $ 55,352 OTHER COMPREHENSIVE INCOME (LOSS), net of tax: Unrealized gain (loss) on marketable securities, net of tax 3,222 3,156 — (3,156 ) 3,222 Reclassification adjustments for impairment of equity securities, net of tax 703 703 — (703 ) 703 Reclassification adjustments for realized loss on sale of equity securities, net of tax (2,691 ) (3,181 ) — 3,181 (2,691 ) Other comprehensive income (loss) 1,234 678 — (678 ) 1,234 COMPREHENSIVE INCOME (LOSS) $ 56,586 $ 66,997 $ 60,650 $ (127,647 ) $ 56,586 (1) Excludes amortization. CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS) YEAR ENDED DECEMBER 31, 2015 In thousands Coeur Mining, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ — $ 378,278 $ 183,129 $ — $ 561,407 COSTS AND EXPENSES Costs applicable to sales (1) — 261,830 141,997 — 403,827 Amortization 1,991 83,325 40,637 — 125,953 COSTS AND EXPENSES General and administrative 32,405 35 196 — 32,636 Exploration 2,265 3,931 5,325 — 11,521 Write-downs — 1,630 244,995 — 246,625 Pre-development, reclamation, and other 4,083 5,920 6,201 — 16,204 Total costs and expenses 40,744 356,671 439,351 — 836,766 OTHER INCOME (EXPENSE), NET Gain on debt extinguishments 15,916 — — — 15,916 Fair value adjustments, net 1,224 818 3,160 — 5,202 Other, net 4,336 (3,106 ) (15,121 ) (3,776 ) (17,667 ) Interest expense, net of capitalized interest (39,867 ) (966 ) (7,921 ) 3,776 (44,978 ) Total other income (expense), net (18,391 ) (3,254 ) (19,882 ) — (41,527 ) Income (loss) from continuing operations before income and mining taxes (59,135 ) 18,353 (276,104 ) — (316,886 ) Income and mining tax (expense) benefit 1,827 (2,354 ) 29,602 — 29,075 Income (loss) from continuing operations (57,308 ) 15,999 (246,502 ) — (287,811 ) Equity income (loss) in consolidated subsidiaries (309,875 ) (14,814 ) — 324,689 — Income (loss) from discontinued operations — — (79,372 ) — (79,372 ) NET INCOME (LOSS) $ (367,183 ) $ 1,185 $ (325,874 ) $ 324,689 $ (367,183 ) OTHER COMPREHENSIVE INCOME (LOSS), net of tax: Unrealized gain (loss) on equity securities, net of tax (4,154 ) (3,118 ) — 3,118 (4,154 ) Reclassification adjustments for impairment of equity securities, net of tax 2,346 2,346 — (2,346 ) 2,346 Reclassification adjustments for realized loss on sale of equity securities, net of tax 894 894 — (894 ) 894 Other comprehensive income (loss) (914 ) 122 — (122 ) (914 ) COMPREHENSIVE INCOME (LOSS) $ (368,097 ) $ 1,307 $ (325,874 ) $ 324,567 $ (368,097 )
Condensed Cash Flow Statement	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS YEAR ENDED DECEMBER 31, 2017 In thousands Coeur Mining, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated CASH FLOWS FROM OPERATING ACTIVITIES: Cash provided by (used in) activities of continuing operations $ (8,470 ) $ 118,667 $ 130,491 $ (43,528 ) 197,160 Cash provided by (used in) activities of discontinued operations — — 11,296 — 11,296 CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES (8,470 ) 118,667 141,787 (43,528 ) 208,456 CASH FLOWS FROM INVESTING ACTIVITIES Capital expenditures (1,941 ) (85,967 ) (48,826 ) — (136,734 ) Proceeds from the sale of assets 8,917 6,902 886 — 16,705 Purchase of investments (15,057 ) (1 ) — — (15,058 ) Sales of investments 9,157 2,164 — — 11,321 Acquisitions, net of cash acquired (156,248 ) — 52,577 — — (156,248 ) Other (3,020 ) — 2,803 — (217 ) Investments in consolidated subsidiaries (34,419 ) 12,911 (881 ) 22,389 — Cash provided by (used in) activities of continuing operations (192,611 ) (63,991 ) (46,018 ) 22,389 (280,231 ) Cash provided by (used in) activities of discontinued operations — — (1,392 ) — (1,392 ) CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES (192,611 ) (63,991 ) (47,410 ) 22,389 (281,623 ) CASH FLOWS FROM FINANCING ACTIVITIES: Issuance of notes and bank borrowings 342,620 — 52,577 — — 342,620 Payments on debt, capital leases, and associated costs (185,538 ) (7,926 ) (9,581 ) — (203,045 ) Net intercompany financing activity 34,359 (44,540 ) 9,801 380 — Other (3,746 ) — — — (3,746 ) Cash provided by (used in) activities of continuing operations 187,695 (52,466 ) 220 380 135,829 Cash provided by (used in) activities of discontinued operations — — (20,843 ) 20,759 (84 ) CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES 187,695 (52,466 ) (20,623 ) 21,139 135,745 Effect of exchange rate changes on cash and cash equivalents — 6 197 — 203 Less net cash provided by (used in) discontinued operations — — (10,939 ) — (10,939 ) NET CHANGE IN CASH AND CASH EQUIVALENTS (13,386 ) 2,216 84,890 — 73,720 Cash and cash equivalents at beginning of period 58,048 50,023 10,241 — 118,312 Cash and cash equivalents at end of period $ 44,662 $ 52,239 $ 95,131 $ — $ 192,032 CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS YEAR ENDED DECEMBER 31, 2016 In thousands Coeur Mining, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated CASH FLOWS FROM OPERATING ACTIVITIES: Cash provided by (used in) activities of continuing operations $ 62,207 $ 134,892 $ 26,331 $ (126,969 ) 96,461 Cash provided by (used in) activities of discontinued operations — — 29,356 — 29,356 CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES 62,207 134,892 55,687 (126,969 ) 125,817 CASH FLOWS FROM INVESTING ACTIVITIES Capital expenditures (246 ) (58,084 ) (36,052 ) — (94,382 ) Proceeds from the sale of assets — 4,800 11,496 — 16,296 Purchase of investments (178 ) — — — (178 ) Sales of investments 501 6,576 — — 7,077 Acquisitions, net of cash acquired — — (1,417 ) — (1,417 ) Other (4,396 ) 368 (180 ) — (4,208 ) Investments in consolidated subsidiaries (107,855 ) 25,047 — 82,808 — Cash provided by (used in) activities of continuing operations (112,174 ) (21,293 ) (26,153 ) 82,808 (76,812 ) Cash provided by (used in) activities of discontinued operations — — (6,631 ) — (6,631 ) CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES (112,174 ) (21,293 ) (32,784 ) 82,808 (83,443 ) CASH FLOWS FROM FINANCING ACTIVITIES: Payments on debt, capital leases, and associated costs (303,686 ) (10,894 ) (3,573 ) — (318,153 ) Gold production royalty payments — — (27,155 ) — (27,155 ) Net intercompany financing activity 45,850 (86,914 ) 13,404 27,660 — Issuance of common stock 269,556 — — — 269,556 Other 172 — — — 172 Cash provided by (used in) activities of continuing operations 11,892 (97,808 ) (17,324 ) 27,660 (75,580 ) Cash provided by (used in) activities of discontinued operations — — (21,149 ) 16,501 (4,648 ) CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES 11,892 (97,808 ) (38,473 ) 44,161 (80,228 ) Effect of exchange rate changes on cash and cash equivalents — 4 (682 ) — (678 ) Less net cash provided by (used in) discontinued operations — — 1,576 — 1,576 NET CHANGE IN CASH AND CASH EQUIVALENTS (38,075 ) 15,795 (17,828 ) — (40,108 ) Cash and cash equivalents at beginning of period 96,123 34,228 28,069 — 158,420 Cash and cash equivalents at end of period $ 58,048 $ 50,023 $ 10,241 $ — $ 118,312 CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS YEAR ENDED DECEMBER 31, 2015 In thousands Coeur Mining, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated CASH FLOWS FROM OPERATING ACTIVITIES: Cash provided by (used in) activities of continuing operations $ (377,091 ) $ 86,486 $ 53,328 $ 324,689 87,412 Cash provided by (used in) activities of discontinued operations — — 26,130 — 26,130 CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES (377,091 ) 86,486 79,458 324,689 113,542 CASH FLOWS FROM INVESTING ACTIVITIES Capital expenditures (514 ) (52,376 ) (36,083 ) — (88,973 ) Proceeds from the sale of assets — 289 318 — 607 Purchase of investments (1,880 ) — — — (1,880 ) Sales of investments 2 532 71 — 605 Acquisitions, net of cash acquired (110,846 ) — — — (110,846 ) Other (4,710 ) 234 (110 ) — (4,586 ) Investments in consolidated subsidiaries 282,041 20,239 120 (302,400 ) — Cash provided by (used in) activities of continuing operations 164,093 (31,082 ) (35,684 ) (302,400 ) (205,073 ) Cash provided by (used in) activities of discontinued operations — — (6,220 ) — (6,220 ) CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES 164,093 (31,082 ) (41,904 ) (302,400 ) (211,293 ) CASH FLOWS FROM FINANCING ACTIVITIES: Issuance of notes and bank borrowings 150,000 — — — 150,000 Payments on debt, capital leases, and associated costs (62,930 ) (7,428 ) (245 ) — (70,603 ) Gold production royalty payments — — (39,235 ) — (39,235 ) Net intercompany financing activity 12,232 (19,518 ) 27,321 (20,035 ) — Other (542 ) — — — (542 ) Cash provided by (used in) activities of continuing operations 98,760 (26,946 ) (12,159 ) (20,035 ) 39,620 Cash provided by (used in) activities of discontinued operations — — (8,358 ) (2,254 ) (10,612 ) CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES 98,760 (26,946 ) (20,517 ) (22,289 ) 29,008 Effect of exchange rate changes on cash and cash equivalents — (11 ) (1,393 ) — (1,404 ) Less net cash provided by (used in) discontinued operations — — 11,552 — 11,552 NET CHANGE IN CASH AND CASH EQUIVALENTS (114,238 ) 28,447 4,092 — (81,699 ) Cash and cash equivalents at beginning of period 210,361 5,781 23,977 — 240,119 Cash and cash equivalents at end of period $ 96,123 $ 34,228 $ 28,069 $ — $ 158,420
Condensed Balance Sheet	CONDENSED CONSOLIDATING BALANCE SHEET DECEMBER 31, 2017 In thousands Coeur Mining, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated ASSETS CURRENT ASSETS Cash and cash equivalents $ 44,662 $ 52,239 $ 95,131 $ — $ 192,032 Receivables 137 7,922 11,010 — 19,069 Ore on leach pads — 73,752 — — 73,752 Inventory — 29,769 28,461 — 58,230 Prepaid expenses and other 7,824 2,816 4,413 — 15,053 Assets held for sale — — 91,421 — 91,421 52,623 166,498 230,436 — 449,557 NON-CURRENT ASSETS Property, plant and equipment, net 4,007 161,487 89,243 — 254,737 Mining properties, net — 216,281 613,288 — 829,569 Ore on leach pads — 65,393 — — 65,393 Restricted assets 13,251 227 7,369 — 20,847 Equity and debt securities 33,569 1,268 — — 34,837 Receivables — — 28,750 — 28,750 Net investment in subsidiaries 422,074 223 (18 ) (422,279 ) — Other 320,335 11,040 2,854 (316,744 ) 17,485 TOTAL ASSETS $ 845,859 $ 622,417 $ 971,922 $ (739,023 ) $ 1,701,175 LIABILITIES AND STOCKHOLDERS’ EQUITY CURRENT LIABILITIES Accounts payable $ 3,607 $ 24,534 $ 20,451 $ — $ 48,592 Other accrued liabilities 13,205 19,262 62,463 — 94,930 Debt — 9,215 21,538 — 30,753 Royalty obligations — — — — — Reclamation — 2,313 1,464 — 3,777 Liabilities held for sale — — 50,677 — 50,677 16,812 55,324 156,593 — 228,729 NON-CURRENT LIABILITIES Debt 345,088 28,313 323,912 (316,744 ) 380,569 Reclamation — 82,021 35,034 — 117,055 Deferred tax liabilities 4,110 5,127 95,911 — 105,148 Other long-term liabilities 2,311 3,063 49,323 — 54,697 Intercompany payable (receivable) (337,439 ) 317,759 19,680 — — 14,070 436,283 523,860 (316,744 ) 657,469 STOCKHOLDERS’ EQUITY Common stock 1,856 19,630 195,020 (214,650 ) 1,856 Additional paid-in capital 3,357,345 149,194 1,885,046 (2,034,240 ) 3,357,345 Accumulated deficit (2,546,743 ) (34,551 ) (1,788,597 ) 1,823,148 (2,546,743 ) Accumulated other comprehensive income (loss) 2,519 (3,463 ) — 3,463 2,519 814,977 130,810 291,469 (422,279 ) 814,977 TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY $ 845,859 $ 622,417 $ 971,922 $ (739,023 ) $ 1,701,175 CONDENSED CONSOLIDATING BALANCE SHEET DECEMBER 31, 2016 In thousands Coeur Mining, Inc. Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated ASSETS CURRENT ASSETS Cash and cash equivalents $ 58,048 $ 50,023 $ 10,241 $ — $ 118,312 Receivables 12 6,865 46,538 — 53,415 Ore on leach pads — 64,167 — — 64,167 Inventory — 49,393 44,043 — 93,436 Prepaid expenses and other 3,803 1,459 4,753 — 10,015 Assets held for sale — — 71,442 — 71,442 61,863 171,907 177,017 — 410,787 NON-CURRENT ASSETS Property, plant and equipment, net 3,222 139,885 50,316 — 193,423 Mining properties, net — 195,791 354,499 — 550,290 Ore on leach pads — 67,231 — — 67,231 Restricted assets 10,170 226 7,201 — 17,597 Equity and debt securities — 4,488 — — 4,488 Receivables — — 13,745 — 13,745 Net investment in subsidiaries 273,056 11,650 — (284,706 ) — Other 221,381 9,263 3,500 (221,559 ) 12,585 Assets held for sale — — 48,763 — 48,763 TOTAL ASSETS $ 569,692 $ 600,441 $ 655,041 $ (506,265 ) $ 1,318,909 LIABILITIES AND STOCKHOLDERS’ EQUITY CURRENT LIABILITIES Accounts payable $ 2,153 $ 24,921 $ 17,586 $ — $ 44,660 Other accrued liabilities 12,881 13,664 9,900 — 36,445 Debt — 6,516 5,439 — 11,955 Royalty obligations — 4,995 — — 4,995 Reclamation — 2,672 437 — 3,109 Liabilities held for sale — — 15,470 — 15,470 15,034 52,768 48,832 — 116,634 NON-CURRENT LIABILITIES Debt 175,991 15,214 229,036 (221,559 ) 198,682 Royalty obligations — 4,292 — — 4,292 Reclamation — 75,183 10,409 — 85,592 Deferred tax liabilities 13,810 6,179 49,822 — 69,811 Other long-term liabilities 1,993 4,750 34,911 — 41,654 Intercompany payable (receivable) (405,623 ) 336,813 68,810 — — Liabilities held for sale — — 33,757 — 33,757 (213,829 ) 442,431 426,745 (221,559 ) 433,788 STOCKHOLDERS’ EQUITY Common stock 1,809 250 197,913 (198,163 ) 1,809 Additional paid-in capital 3,314,590 181,009 1,864,261 (2,045,270 ) 3,314,590 Accumulated deficit (2,545,424 ) (73,529 ) (1,882,710 ) 1,956,239 (2,545,424 ) Accumulated other comprehensive income (loss) (2,488 ) (2,488 ) — 2,488 (2,488 ) 768,487 105,242 179,464 (284,706 ) 768,487 TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY $ 569,692 $ 600,441 $ 655,041 $ (506,265 ) $ 1,318,909

Additional Balance Sheet Deta51

Additional Balance Sheet Detail and Supplemental Cash Flow Information (Tables)	12 Months Ended
	Dec. 31, 2017
Supplemental Cash Flow Information [Abstract]
Schedule of Accrued Liabilities [Table Text Block]	Accrued liabilities and other consist of the following: December 31, 2017 December 31, 2016 Accrued salaries and wages $ 26,559 $ 20,895 Income and mining taxes 25,788 3,721 Silvertip contingent consideration 24,393 — Accrued operating costs 12,323 3,199 Taxes other than income and mining 4,354 2,738 Accrued interest payable 1,513 5,892 Accrued liabilities and other $ 94,930 $ 36,445
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]	The following table presents non-cash financing and investing activities and other cash flow information: Year ended December 31, Non-cash financing and investing activities: 2017 2016 2015 Capital lease obligations $ 34,604 $ 32,243 $ 4,123 Non-cash extinguishment of senior notes — 10,616 53,373 Non-cash acquisitions and related deferred taxes 131,833 — 297,821 Other cash flow information: Interest paid $ 21,943 $ 41,919 $ 41,442 Income taxes paid 13,000 17,181 1,937

Summary of Quarterly Financia52

Summary of Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information	The following table sets forth a summary of the unaudited quarterly results of operations for the years ended December 31, 2017 and 2016 (in thousands, except per share data): Q1 Q2 Q3 Q4 2017 Revenues $ 185,554 $ 149,540 $ 159,919 $ 214,585 Costs applicable to sales 114,490 102,229 101,559 121,982 Amortization 38,693 30,733 32,401 44,722 Exploration 5,252 7,813 9,792 7,454 Other operating expenses (General and administrative, Pre-development, reclamation, and other, and Write-downs) 13,962 11,110 12,374 15,106 Income (loss) from continuing operations 18,299 (9,995 ) (11,728 ) 14,349 Income (loss) from discontinued operations 364 (960 ) (4,924 ) (6,724 ) Net income (loss) 18,663 (10,955 ) (16,652 ) 7,625 Cash provided by (used in) operating activities 43,938 24,103 37,308 91,811 Capital expenditures 23,591 37,107 28,982 47,054 Basic income (loss) per share: Net income (loss) from continuing operations $ 0.10 $ (0.05 ) $ (0.06 ) $ 0.08 Net income (loss) from discontinued operations — (0.01 ) (0.03 ) (0.04 ) Basic $ 0.10 $ (0.06 ) $ (0.09 ) $ 0.04 Diluted income (loss) per share: Net income (loss) from continuing operations $ 0.10 $ (0.05 ) $ (0.06 ) $ 0.08 Net income (loss) from discontinued operations — (0.01 ) (0.03 ) (0.04 ) Diluted $ 0.10 $ (0.06 ) $ (0.09 ) $ 0.04 Q1 Q2 Q3 Q4 2016 Revenues $ 127,109 $ 156,822 $ 148,762 $ 139,204 Costs applicable to sales 84,058 81,820 84,594 84,903 Amortization 26,210 35,653 26,040 28,625 Exploration 1,731 2,233 3,706 5,260 Other operating expenses (General and administrative, Pre-development, reclamation, and other, and Write-downs) 16,635 10,688 10,439 10,370 Income (loss) from continuing operations (21,640 ) 8,280 46,123 (10,328 ) Income (loss) from discontinued operations 1,244 6,217 23,436 2,020 Net income (loss) (20,396 ) 14,497 69,559 (8,308 ) Cash provided by (used in) operating activities 1,085 34,752 39,201 21,423 Capital expenditures 21,651 21,971 22,626 28,134 Basic income (loss) per share: Net income (loss) from continuing operations $ (0.15 ) $ 0.05 $ 0.29 $ (0.06 ) Net income (loss) from discontinued operations 0.01 0.04 0.14 0.01 Basic $ (0.14 ) $ 0.09 $ 0.43 $ (0.05 ) Diluted income (loss) per share: Net income (loss) from continuing operations $ (0.15 ) $ 0.05 $ 0.28 $ (0.06 ) Net income (loss) from discontinued operations 0.01 0.04 0.14 0.01 Diluted $ (0.14 ) $ 0.09 $ 0.42 $ (0.05 )

Summary of Significant Accoun53

Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accounting Policies [Abstract]
Drilling and Related Costs Capitalized	$ 11,700	$ 12,900
Impairment of long-lived assets	0	4,446	$ 246,625
Write-downs	3,390
Held-to-maturity Securities, Restricted	$ 20,800	$ 17,600

Write-Downs (Details)

Write-Downs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	$ 0	$ 4,446	$ 246,625
Mining Properties and Mineral Rights [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	0	4,446	227,921
Mining Properties and Mineral Rights [Member] | Palmarejo [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	0	0	205,803
Mining Properties and Mineral Rights [Member] | Coeur Capital [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	0	4,446	22,118
Property, Plant and Equipment, Other Types [Member] | Palmarejo [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	$ 0	$ 0	$ 18,704

Write-Downs (Details Textual)

Write-Downs (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Apr. 19, 2016
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	$ 0	$ 4,446	$ 246,625
Impairment of Long-Lived Assets Held-for-use, Net of Tax		3,900	209,800
Palmarejo [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs			224,500
Impairment of Long-Lived Assets Held-for-use, Net of Tax			193,500
Coeur Capital [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs			22,100
Impairment of Long-Lived Assets Held-for-use, Net of Tax			$ 16,300
Endeavor [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs		2,500
McEwen Mining Inc, El Gallo, Magistral Mine [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs		$ 1,900
Transfer of financial assets accounted for as sales, amount				$ 6,300
Disposition of Assets, Contingent Consideration, Asset				$ 1,000

Segment Reporting (Details)

Segment Reporting (Details) - USD ($) $ in Thousands		3 Months Ended									12 Months Ended
		Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016		Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Financial information relating to reporting segments
Revenue											$ 709,598		$ 568,617		$ 554,557
Royalty Revenue													3,280		6,850
Revenues		$ 214,585	$ 159,919	$ 149,540	$ 185,554	$ 139,204		$ 148,762	$ 156,822	$ 127,109	709,598		571,897		561,407
Costs applicable to sales		121,982	101,559	102,229	114,490	84,903		84,594	81,820	84,058	440,260	[1]	335,375	[1]	403,827	[1]
Amortization		44,722	32,401	30,733	38,693	28,625		26,040	35,653	26,210	146,549		116,528		125,953
Exploration		7,454	9,792	7,813	5,252	5,260		3,706	2,233	1,731	30,311		12,930		11,521
Write-downs											0		4,446		246,625
Other operating expenses											52,552		43,686		48,840
Gain (Loss) on Extinguishment of Debt											(9,342)		(21,365)		15,916
Fair value adjustments, net, pretax											(864)		(11,581)		5,202
Interest expense, net											(16,440)		(36,896)		(44,978)
Other, net											26,643		98		(17,667)
Income and mining tax benefit (expense)											(28,998)		33,247		29,075
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent		14,349	(11,728)	(9,995)	18,299	(10,328)		46,123	8,280	(21,640)	10,925		22,435		(287,811)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent		(6,724)	(4,924)	(960)	364	2,020		23,436	6,217	1,244	(12,244)		32,917		(79,372)
Assets, Net	[2]	1,344,553				1,045,722					1,344,553		1,045,722		1,012,169
Capital expenditures		47,054	$ 28,982	$ 37,107	$ 23,591	28,134		$ 22,626	$ 21,971	$ 21,651	136,734		94,382		88,973
Palmarejo [Member]
Financial information relating to reporting segments
Revenue											274,809		141,273		169,133
Royalty Revenue													0		0
Revenues													141,273		169,133
Costs applicable to sales	[1]										146,176		80,820		138,476
Amortization											73,744		36,599		32,423
Exploration											11,924		5,063		4,533
Write-downs													0		224,507
Other operating expenses											1,263		1,213		1,293
Gain (Loss) on Extinguishment of Debt											0		0		0
Fair value adjustments, net, pretax											0		(5,814)		3,160
Interest expense, net											(487)		1,187		4,269
Other, net											(851)		(12,125)		(10,968)
Income and mining tax benefit (expense)											(24,330)		(45,085)		(37,597)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent											16,034		43,537		(206,579)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent											0		0		0
Assets, Net	[2]	377,621				436,642					377,621		436,642		406,648
Capital expenditures											29,902		35,810		35,991
Rochester [Member]
Financial information relating to reporting segments
Revenue											152,680		139,945		143,930
Royalty Revenue													0		0
Revenues													139,945		143,930
Costs applicable to sales	[1]										107,921		89,726		103,994
Amortization											22,306		21,838		23,906
Exploration											1,352		841		1,324
Write-downs													0		0
Other operating expenses											3,394		2,801		2,948
Gain (Loss) on Extinguishment of Debt											0		0		0
Fair value adjustments, net, pretax											(864)		(4,133)		818
Interest expense, net											(496)		664		748
Other, net											2,193		(3,859)		(13)
Income and mining tax benefit (expense)											(1,028)		2,785		1,497
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent											17,512		13,298		10,318
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent											0		0		0
Assets, Net	[2]	239,223				219,009					239,223		219,009		190,714
Capital expenditures											40,874		16,446		25,330
Silvertip [Member]
Financial information relating to reporting segments
Revenue											0
Costs applicable to sales	[1]										0
Amortization											0
Exploration											0
Other operating expenses											153
Gain (Loss) on Extinguishment of Debt											0
Fair value adjustments, net, pretax											0
Interest expense, net											(2,212)
Other, net											1,142
Income and mining tax benefit (expense)											(932)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent											(2,155)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent											0
Assets, Net	[2]	339,369									339,369
Capital expenditures											17,684
Kensington [Member]
Financial information relating to reporting segments
Revenue											154,469		146,593		148,710
Royalty Revenue													0		0
Revenues													146,593		148,710
Costs applicable to sales	[1]										116,096		96,731		105,640
Amortization											36,022		34,787		42,240
Exploration											8,604		3,487		2,596
Write-downs													0		0
Other operating expenses											1,412		1,038		1,301
Gain (Loss) on Extinguishment of Debt											0		0		0
Fair value adjustments, net, pretax											0		0		0
Interest expense, net											(413)		128		218
Other, net											(922)		(25)		7
Income and mining tax benefit (expense)											0		0		0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent											(9,000)		10,397		(3,278)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent											0		0		0
Assets, Net	[2]	212,588				199,232					212,588		199,232		197,873
Capital expenditures											36,248		36,826		23,834
Wharf [Member]
Financial information relating to reporting segments
Revenue											125,901		136,678		84,052
Royalty Revenue													0		0
Revenues													136,678		84,052
Costs applicable to sales	[1]										69,322		66,379		52,197
Amortization											13,012		20,621		16,378
Exploration											320		2		134
Write-downs													0		0
Other operating expenses											2,468		2,238		1,717
Gain (Loss) on Extinguishment of Debt											0		0		0
Fair value adjustments, net, pretax											0		0		0
Interest expense, net											(66)		69		0
Other, net											172		17		143
Income and mining tax benefit (expense)											(3,936)		4,293		857
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent											36,949		43,093		12,912
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent											0		0		0
Assets, Net	[2]	104,010				105,901					104,010		105,901		113,305
Capital expenditures											8,844		4,812		3,211
Other Mining Properties [Member]
Financial information relating to reporting segments
Revenue											1,739		4,128		8,732
Royalty Revenue													3,280		6,850
Revenues													7,408		15,582
Costs applicable to sales	[1]										745		1,719		3,520
Amortization											1,465		2,683		11,006
Exploration											8,111		3,537		2,934
Write-downs													4,446		22,118
Other operating expenses											43,862		36,396		41,581
Gain (Loss) on Extinguishment of Debt											(9,342)		(21,365)		15,916
Fair value adjustments, net, pretax											0		(1,634)		1,224
Interest expense, net											(12,766)		34,848		39,743
Other, net											24,909		16,090		(6,836)
Income and mining tax benefit (expense)											1,228		4,760		6,168
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent											(48,415)		(87,890)		(101,184)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent											(12,244)		32,917		(79,372)
Assets, Net		$ 71,742				$ 84,938	[2]				71,742		84,938	[2]	103,629	[2]
Capital expenditures											$ 3,182		$ 488		$ 607
[1]	Excludes amortization.
[2]	Segment assets include receivables, prepaids, inventories, property, plant and equipment, and mineral interest

Segment Reporting (Details 1)

Segment Reporting (Details 1) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting [Abstract]
Assets, Net	[1]	$ 1,344,553	$ 1,045,722	$ 1,012,169
Cash and cash equivalents		192,032	118,312	$ 158,420	$ 240,119
Other assets		164,590	154,875
TOTAL ASSETS		$ 1,701,175	$ 1,318,909
[1]	Segment assets include receivables, prepaids, inventories, property, plant and equipment, and mineral interest

Segment Reporting (Details 2)

Segment Reporting (Details 2) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Long Lived Assets
Long Lived Assets in Entity's Country of Domicile	$ 1,084,306				$ 755,369				$ 1,084,306	$ 755,369
Revenues
Revenues	214,585	$ 159,919	$ 149,540	$ 185,554	139,204	$ 148,762	$ 156,822	$ 127,109	709,598	571,897	$ 561,407
United States
Long Lived Assets
Long Lived Assets in Entity's Country of Domicile	377,768				338,897				377,768	338,897
Revenues
Revenues									433,050	423,216	376,692
Canada
Long Lived Assets
Long Lived Assets in Entity's Country of Domicile	331,440				0				331,440	0
Mexico
Long Lived Assets
Long Lived Assets in Entity's Country of Domicile	370,188				397,697				370,188	397,697
Revenues
Revenues									274,809	142,198	171,911
Australia
Revenues
Revenues									1,739	4,128	8,732
Argentina
Long Lived Assets
Long Lived Assets in Entity's Country of Domicile	229				10,228				229	10,228
Other Foreign Countries [Member]
Long Lived Assets
Long Lived Assets in Entity's Country of Domicile	$ 4,681				$ 8,547				4,681	8,547
Revenues
Revenues									$ 0	$ 2,355	$ 4,072

Segment Reporting (Details 3)

Segment Reporting (Details 3) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 709,598	$ 568,617	$ 554,557
China National Gold [Domain]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	137,500	126,600	126,200
Republic Metals Corporation [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	132,400	47,300	600
Asahi Formerly Johnson Matthey [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	124,100	62,600	84,200
Techemet Metal Trading [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	104,800	40,700	0
TD Securities [Domain]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	0	15,500	81,300
INTL Commodities [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	9,600	76,600	33,100
Mitsui & Co. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 0	$ 0	$ 137,700
Dore [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of Trading Counterparties	8
Dore [Member] | Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration Risk, Percentage	78.00%	74.00%	72.00%
Smelting and Refining [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of Trading Counterparties	1
Smelting and Refining [Member] | Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration Risk, Percentage	22.00%	26.00%	27.00%

Stock-Based Compensation (Detai

Stock-Based Compensation (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation cost	$ 6.1
Unrecognized stock-based compensation cost, weighted-average period recognized	1 year 5 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 0.2
Proceeds from Stock Options Exercised	0.1
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value	0.5	$ 1	$ 1.4
Annual Incentive Plan and Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense for stock based compensation awards	10.5	$ 9.7	$ 9.3
Restricted Stock and Restricted Stock Unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation cost	$ 3.5
Unrecognized stock-based compensation cost, weighted-average period recognized	1 year 3 months
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period	3 years
Performance Shares and Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation cost	$ 2.6
Unrecognized stock-based compensation cost, weighted-average period recognized	1 year 7 months
Stock Options and Stock Appreciation Rights [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation cost	$ 0.1
Unrecognized stock-based compensation cost, weighted-average period recognized	1 year
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years

Stock-Based Compensation (Det61

Stock-Based Compensation (Details) - Stock Options [Member] - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement by Share Based Payment Award Grants in Period Weighted Average Grant Date Fair Value	$ 3.91	$ 1.06	$ 2.65
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	67.07%	61.75%	55.71%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	4 years	3 years 11 months 27 days	4 years 9 months
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	1.69%	1.50%	1.51%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	0.00%	0.00%	0.00%

Stock-Based Compensation (Det62

Stock-Based Compensation (Details 1) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	656,611	670,009	598,346	617,446
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 10.76	$ 12.58	$ 16.26	$ 10.53
Share Based Compensation Arrangement by Share Based Payment Award SAR's Outstanding Number	42,152	46,572	46,572	42,152
Share Based Compensation Arrangement by Share Based Payment Award SAR's Outstanding Weighted Average Exercise Price	$ 14.14	$ 14.06	$ 14.06	$ 14.14
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	14,820	183,251	310,028
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 7.60	$ 2.19	$ 5.57
Share Based Compensation Arrangement by Share Based Payment Award SAR's Grants in Period	0	0	0
Share Based Compensation Arrangement by Share Based Payment Award SAR's Grants in Period Weighted Average Grant Date Fair Value	$ 0	$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period	27,019	25,752	238,365
Share Based Compensation Arrangement by Share Based Payment Award Option Cancelled Forfeited in Period Weighted Average Grant Date Fair Value	$ 21.88	$ 16.76	$ 12.69
Share Based Compensation Arrangement by Share Based Payment Award SAR's Forfeitures in Period	0	4,420	0
Share Based Compensation Arrangement by Share Based Payment Award SAR's Cancelled Forfeited in Period Weighted Average Grant Date Fair Value	$ 0	$ 13.31	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	26,966	170,897
Share Based Compensation Arrangement by Share Based Payment Award Option Exercises in Period Weighted Average Grant Date Fair Value	$ 3.28	$ 7.81
Share Based Compensation Arrangement by Share Based Payment Award SAR's Exercises in Period	0	0
Share Based Compensation Arrangement by Share Based Payment Award SAR's Exercises in Period Weighted Average Grant Date Fair Value	$ 0	$ 0

Stock-Based Compensation (Det63

Stock-Based Compensation (Details 2) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)$ / sharesshares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options | shares	617,446
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price | $ / shares	$ 10.53
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term	6 years 5 months 18 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value | $	$ 1,127
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number | shares	601,545
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price | $ / shares	$ 10.71
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term	6 years 5 months 2 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value | $	$ 1,065
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options | shares	427,730
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price | $ / shares	$ 13.62
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	5 years 9 months 21 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | $	$ 377
Zero to Ten Dollars [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options | shares	434,520
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price | $ / shares	$ 5.45
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term	7 years 2 months 25 days
Ten Dollars to Twenty Dollars [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options | shares	47,051
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price | $ / shares	$ 12.73
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term	5 years 8 months 6 days
Twenty Dollars to Thirty Dollars [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options | shares	133,692
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price | $ / shares	$ 25.64
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term	4 years 4 months
Thirty Dollars to Forty Dollars [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options | shares	0
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price | $ / shares	$ 0
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term	0 years
Forty Dollars to Fifty Dollars [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options | shares	2,183
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price | $ / shares	$ 48.50
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term	10 days

Stock-Based Compensation (Det64

Stock-Based Compensation (Details 3) - Restricted Stock [Member] - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	2,155,845	2,433,915	1,507,412	901,999
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 5.72	$ 4.48	$ 7.49	$ 12.19
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	799,165	1,768,746	1,180,384
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 8.78	$ 3.72	$ 5.49
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	1,023,708	681,829	317,122
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	$ 5.14	$ 8.51	$ 13.38
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	53,527	160,414	257,849
Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other than Option Forfeited in Period Weighted Average Grant Date Fair Value	$ 5.90	$ 7.16	$ 7.59

Stock-Based Compensation (Det65

Stock-Based Compensation (Details 4) - Performance Shares [Member] - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	2,368,281	2,372,632	1,135,135	516,830
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 4.44	$ 4.53	$ 10.35	$ 17.61
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	316,213	1,437,077	809,293
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 11.58	$ 1.79	$ 6.97
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	66,696
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	$ 14.18
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	253,868	199,580	190,988
Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other than Option Forfeited in Period Weighted Average Grant Date Fair Value	$ 11.56	$ 17.98	$ 15.62

Income and Mining Taxes - Narra

Income and Mining Taxes - Narrative (Details) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2016USD ($)	Sep. 30, 2016USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Jan. 21, 2009oz
Income Tax Contingency [Line Items]
Valuation allowance				$ 40.8
Gross unrecognized benefits			4.3	5.1	1.2
Income tax penalties and interest expense			$ 4.8	$ 5.5	$ 0.7
Minimum
Income Tax Contingency [Line Items]
Unrecognized income tax liability			1.5
Maximum
Income Tax Contingency [Line Items]
Unrecognized income tax liability			$ 2.5
Palmarejo gold production royalty
Income Tax Contingency [Line Items]
Payment made for gold on the end of royalty obligation | oz						4,167
Silver and gold options
Income Tax Contingency [Line Items]
Net derivative gain (loss)				$ 1.6	$ 1.3
Franco-Nevada warrant
Income Tax Contingency [Line Items]
Market-to-market adjustment	$ 5.9	$ 17

Income and Mining Taxes - Incom

Income and Mining Taxes - Income (Loss) Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
United States	$ 10,099	$ (13,299)	$ (44,101)
Foreign	29,824	2,487	(272,785)
Total	$ 39,923	$ (10,812)	$ (316,886)

Income and Mining Taxes - Inc68

Income and Mining Taxes - Income and Mining Tax (Expense) Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Examination [Line Items]
Income tax (expense) benefit	$ 28,998	$ (33,247)	$ (29,075)
United States
Income Tax Examination [Line Items]
Deferred federal income tax expense (benefit)		6,367	(1,610)	$ (564)
United States - Alternative Minimum tax [Member]
Income Tax Examination [Line Items]
Current federal tax expense (benefit)		1,428	0	49
United States — State mining taxes
Income Tax Examination [Line Items]
Current federal tax expense (benefit)		(6,016)	(7,826)	(4,305)
Deferred federal income tax expense (benefit)		1,052	748	1,952
United States — Foreign withholding tax
Income Tax Examination [Line Items]
Current federal tax expense (benefit)		(8,466)	(1,838)	0
Argentina
Income Tax Examination [Line Items]
Current foreign tax expense (benefit)		55	10	715
Deferred foreign income tax expense (benefit)		1,531	115	(1,197)
Australia
Income Tax Examination [Line Items]
Current foreign tax expense (benefit)		0	14	130
Deferred foreign income tax expense (benefit)		0	(1,638)	3,223
Canada
Income Tax Examination [Line Items]
Current foreign tax expense (benefit)		876	(1,841)	(516)
Deferred foreign income tax expense (benefit)		104	1,338	2,875
Mexico
Income Tax Examination [Line Items]
Current foreign tax expense (benefit)		(30,763)	(9,581)	(476)
Deferred foreign income tax expense (benefit)		4,805	55,383	27,189
New Zealand
Income Tax Examination [Line Items]
Deferred foreign income tax expense (benefit)		$ 29	$ (27)	$ 0

Income and Mining Taxes - Recon

Income and Mining Taxes - Reconciliation of Effective Income Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income and mining tax (expense) benefit at statutory rate	$ (14,037)	$ 3,718	$ 110,848
State tax provision from continuing operations	26	336	(2,075)
Change in valuation allowance	86,712	40,517	(70,457)
Effect of tax legislation	(88,174)	0	0
Percentage depletion	703	983	0
Uncertain tax positions	2,596	(8,829)	170
U.S. and foreign permanent differences	2,348	(2,652)	(3,376)
Mineral interest related	0	0	(18,318)
Foreign exchange rates	(14,180)	19,701	21,461
Foreign inflation and indexing	(2,346)	(670)	1,117
Foreign tax rate differences	2,929	120	(14,062)
Mining, foreign withholding, and other taxes	(11,274)	(11,052)	8,141
Other, net	5,699	0	(4,374)
Legal entity reorganization	0	(8,925)	0
Income and mining tax benefit (expense)	$ 28,998	$ (33,247)	$ (29,075)

Income and Mining Taxes - Defer

Income and Mining Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred tax liabilities:
Mineral properties	$ 143,773	$ 60,199
Unrealized foreign currency loss and other	1,748	0
Inventory	8,258	4,629
Royalty and other long-term debt	0	8,685
Gross deferred tax liabilities	153,779	73,513
Deferred tax assets:
Net operating loss carryforwards	155,512	186,005
Property, plant, and equipment	60,286	60,828
Mining Royalty Tax	11,797	6,359
Capital loss carryforwards	19,881	6,770
Asset retirement obligation	25,309	26,951
Foreign subsidiaries - unremitted earnings	1,842	3,685
Unrealized foreign currency loss and other	218	7,413
Accrued expenses	13,512	15,193
Tax credit carryforwards	45,277	29,227
Gross deferred tax assets	333,634	342,431
Valuation allowance	(282,868)	(338,539)
Deferred tax assets, net of valuation allowance	50,766	3,892
Net deferred tax liabilities	$ 103,013	$ 69,621

Income and Mining Taxes - Valua

Income and Mining Taxes - Valuation Allowance (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Income Tax Examination [Line Items]
Valuation allowance	$ 282,868	$ 338,539
United States
Income Tax Examination [Line Items]
Valuation allowance	235,395	292,446
Argentina
Income Tax Examination [Line Items]
Valuation allowance	3,914	6,197
Canada
Income Tax Examination [Line Items]
Valuation allowance	2,455	1,296
Mexico
Income Tax Examination [Line Items]
Valuation allowance	17,087	13,033
New Zealand
Income Tax Examination [Line Items]
Valuation allowance	23,792	23,717
Other
Income Tax Examination [Line Items]
Valuation allowance	$ 225	$ 1,850

Income and Mining Taxes - Summa

Income and Mining Taxes - Summary of Tax Credit Carryforwards (Details) $ in Thousands	Dec. 31, 2017USD ($)
Tax Credit Carryforward [Line Items]
Regular net operating losses	$ 565,365
Alternative minimum tax net operating losses	179,882
Capital losses	86,790
Alternative minimum tax credits	1,654
Foreign tax credits	41,730
United States
Tax Credit Carryforward [Line Items]
Regular net operating losses	369,973
Alternative minimum tax net operating losses	179,882
Capital losses	72,772
Alternative minimum tax credits	1,654
Foreign tax credits	41,730
Canada
Tax Credit Carryforward [Line Items]
Regular net operating losses	39,833
Alternative minimum tax net operating losses	0
Capital losses	14,018
Alternative minimum tax credits	0
Foreign tax credits	0
Mexico
Tax Credit Carryforward [Line Items]
Regular net operating losses	56,958
Alternative minimum tax net operating losses	0
Capital losses	0
Alternative minimum tax credits	0
Foreign tax credits	0
New Zealand
Tax Credit Carryforward [Line Items]
Regular net operating losses	86,165
Alternative minimum tax net operating losses	0
Capital losses	0
Alternative minimum tax credits	0
Foreign tax credits	0
Other
Tax Credit Carryforward [Line Items]
Regular net operating losses	12,436
Alternative minimum tax net operating losses	0
Capital losses	0
Alternative minimum tax credits	0
Foreign tax credits	$ 0

Income and Mining Taxes - Rec73

Income and Mining Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Beginning unrecognized tax benefits	$ 7,157	$ 2,131
Gross increase to current period tax positions	202	239
Gross increase to prior period tax positions	316	5,187
Reductions in unrecognized tax benefits resulting from a lapse of the applicable statute of limitations	(2,351)	(400)
Ending unrecognized tax benefits	$ 5,324	$ 7,157

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Gain (Loss) Derivative Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) on derivative instruments	$ (864)	$ (11,581)	$ 5,202
Rochester Royalty Obligation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) on derivative instruments	(864)	(4,133)	818
Palmarejo gold production royalty
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) on derivative instruments	0	(5,866)	3,101
Silver and gold options
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) on derivative instruments	$ 0	$ (1,582)	$ 1,283

Reclamation (Details)

Reclamation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Asset retirement obligation
Asset retirement obligation - Beginning	$ 86,754	$ 71,763
Accretion	8,769	7,030
Additions and changes in estimates	25,370	9,389
Settlements	(2,094)	(1,428)
Asset retirement obligation - Ending	118,799	86,754
Property, Plant and Equipment [Line Items]
Additions and changes in estimates	25,370	9,389
Accrued reclamation liabilities	2,000	$ 1,900
Palmarejo [Member]
Asset retirement obligation
Additions and changes in estimates	17,100
Property, Plant and Equipment [Line Items]
Additions and changes in estimates	17,100
Rochester [Member]
Asset retirement obligation
Additions and changes in estimates	1,200
Property, Plant and Equipment [Line Items]
Additions and changes in estimates	1,200
Silvertip [Member]
Asset retirement obligation
Additions and changes in estimates	7,100
Property, Plant and Equipment [Line Items]
Additions and changes in estimates	$ 7,100

Fair Value Measurements - Sum76

Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Assets:
Assets	$ 35,088	$ 4,488
Liabilities:
Total liabilities	48,187	10,049
Other derivative instruments, net
Assets:
Other derivative instruments, net	251
Liabilities:
Fair value of derivative liability	222	762
Silvertip Mine
Liabilities:
Fair value of derivative liability	47,965
Rochester Royalty Obligation
Liabilities:
Fair value of derivative liability		9,287
Equity and debt securities
Assets:
Equity and debt securities	28,245	4,488
Level 1
Assets:
Assets	27,946	4,209
Liabilities:
Total liabilities	0	0
Level 1 | Other derivative instruments, net
Assets:
Other derivative instruments, net	0
Liabilities:
Fair value of derivative liability	0	0
Level 1 | Silvertip Mine
Liabilities:
Fair value of derivative liability	0
Level 1 | Rochester Royalty Obligation
Liabilities:
Fair value of derivative liability		0
Level 1 | Equity and debt securities
Assets:
Equity and debt securities	27,946	4,209
Level 2
Assets:
Assets	251	0
Liabilities:
Total liabilities	222	762
Level 2 | Other derivative instruments, net
Assets:
Other derivative instruments, net	251
Liabilities:
Fair value of derivative liability	222	762
Level 2 | Silvertip Mine
Liabilities:
Fair value of derivative liability	0
Level 2 | Rochester Royalty Obligation
Liabilities:
Fair value of derivative liability		0
Level 2 | Equity and debt securities
Assets:
Equity and debt securities	0	0
Level 3
Assets:
Assets	6,891	279
Liabilities:
Total liabilities	47,965	9,287
Level 3 | Other derivative instruments, net
Assets:
Other derivative instruments, net	0
Liabilities:
Fair value of derivative liability	0	0
Level 3 | Rochester Royalty Obligation
Liabilities:
Fair value of derivative liability		9,287
Level 3 | Equity and debt securities
Assets:
Equity and debt securities	6,891	279
Silvertip Mine
Liabilities:
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value	$ 47,965	$ 0

Fair Value Measurements - Sum77

Fair Value Measurements - Summary of Level 3 Financial Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Available-for-sale Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at the start of the period	$ 279	$ 10
Asset Purchases	6,677	0
Revaluation	(65)	272
Settlements	0	3
Asset Sales	0	0
Balance at the end of the period	6,891	279
Palmarejo royalty obligation
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at the start of the period	0	4,957
Liability Purchases		0
Revaluation		5,866
Settlements		(10,823)
Liability Sales		0
Balance at the end of the period		0
Rochester Royalty Obligation
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at the start of the period	9,287	9,593
Liability Purchases	0	0
Revaluation	864	4,133
Settlements	(7,819)	(4,439)
Liability Sales	(2,332)	0
Balance at the end of the period	0	9,287
Silvertip Mine
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at the start of the period	0
Liability Purchases	47,705
Revaluation	260
Settlements	0
Liability Sales	0
Balance at the end of the period	$ 47,965	$ 0

Fair Value Measurements - Sum78

Fair Value Measurements - Summary of Assets and Liabilities Carried at Book Value (Details) - USD ($) $ in Thousands		Dec. 31, 2017		Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Book value		$ 380,569		$ 198,682
Senior Notes due 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Book value	[1]	245,088		0
Senior Notes due 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Book value	[2]	0		175,991
Revolving Credit Facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Book value		100,000	[1]	0	[2]
Portion at Other than Fair Value Measurement | Senior Notes due 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt		243,913
Portion at Other than Fair Value Measurement | Senior Notes due 2024 | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt		0
Portion at Other than Fair Value Measurement | Senior Notes due 2024 | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt		243,913
Portion at Other than Fair Value Measurement | Senior Notes due 2024 | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt		0
Portion at Other than Fair Value Measurement | Senior Notes due 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt	[3]			184,373
Portion at Other than Fair Value Measurement | Senior Notes due 2021 | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt	[3]			0
Portion at Other than Fair Value Measurement | Senior Notes due 2021 | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt	[3]			184,373
Portion at Other than Fair Value Measurement | Senior Notes due 2021 | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt	[3]			$ 0
Portion at Other than Fair Value Measurement | Revolving Credit Facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt		100,000
Portion at Other than Fair Value Measurement | Revolving Credit Facility | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt		0
Portion at Other than Fair Value Measurement | Revolving Credit Facility | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt		100,000
Portion at Other than Fair Value Measurement | Revolving Credit Facility | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of long-term debt		$ 0
[1]	Net of unamortized debt issuance costs of $4.9 million at December 31, 2017.
[2]	Net of unamortized debt issuance costs and premium received of $2.0 million at December 31, 2016.
[3]	Net of unamortized debt issuance costs and premium received of $2.0 million.

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	9 Months Ended	12 Months Ended
	Oct. 31, 2017	Sep. 30, 2016	Dec. 31, 2017	Dec. 31, 2015	Sep. 30, 2017	Jul. 31, 2017	May 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain on repurchase of the Rochester royalty obligation		$ 0	$ 2,332	$ 0
Ownership in Metalla Royalty & Streaming Ltd.					19.90%
Senior Notes due 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net unamortized debt issuance costs			$ 4,900
Stated interest rate							5.875%
Senior Notes due 2024 | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stated interest rate			5.875%
Senior Notes due 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net unamortized debt issuance costs								$ 2,000
Senior Notes due 2021 | Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stated interest rate			7.875%
Rochester Royalty Obligation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Transfer of financial assets accounted for as sales, amount							$ 5,000
Non-core three royalties and stream
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total consideration						$ 13,000
Convertible debenture						$ 6,700
Debt Securities | Metalla Royalty & Streaming Ltd.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Stated interest rate			5.00%
Silvertip Mine
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration payment	$ 25,000
Permitting payment, estimated discount rate (percentage)	2.50%
Resource declaration payment, estimated discount rate (percentage)	2.90%

Derivative Financial Instrume80

Derivative Financial Instruments - Summary of Provisionally Priced Sales $ in Thousands	Dec. 31, 2017USD ($)oz$ / oz
Silver concentrate sales agreements | 2018
Derivative instruments Settlement
Derivative, notional amount | $	$ 383
Derivative average price | $ / oz	16.61
Outstanding Provisionally Priced Sales Consists of Silver | oz	23,065
Silver concentrate sales agreements | Thereafter
Derivative instruments Settlement
Derivative, notional amount | $	$ 0
Derivative average price | $ / oz	0
Outstanding Provisionally Priced Sales Consists of Silver | oz	0
Gold concentrates sales agreements | 2018
Derivative instruments Settlement
Derivative, notional amount | $	$ 53,214
Derivative average price | $ / oz	1,283.11
Outstanding Provisionally Priced Sales Consists of Gold | oz	41,476
Gold concentrates sales agreements | Thereafter
Derivative instruments Settlement
Derivative, notional amount | $	$ 0
Derivative average price | $ / oz	0
Outstanding Provisionally Priced Sales Consists of Gold | oz	0

Derivative Financial Instrume81

Derivative Financial Instruments - Summary of Classification of Fair Value of Derivative Instruments - Silver and Gold Concentrate Sales Agreements - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Prepaid expenses and other
Fair value of the derivative instruments
Other derivative instruments, net	$ 251
Accrued liabilities and other
Fair value of the derivative instruments
Fair value of derivative liability	222	$ 762
Non-current portion of royalty obligation
Fair value of the derivative instruments
Fair value of derivative liability	$ 0	$ 0

Derivative Financial Instrume82

Derivative Financial Instruments - Summary of Mark-to-Market Gain (Losses) on Derivative Instruments - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Fair value adjustments, net, pretax	$ (864)	$ (11,581)	$ 5,202
Fair value adjustments, net	631	(7,687)	4,598
Provisional silver and gold sales contracts
Derivative Instruments, Gain (Loss) [Line Items]
Provisional gain (loss) on derivatives and commodity contracts	631	(239)	214
Palmarejo gold production royalty
Derivative Instruments, Gain (Loss) [Line Items]
Fair value adjustments, net, pretax	0	(5,866)	3,101
Silver and gold options
Derivative Instruments, Gain (Loss) [Line Items]
Fair value adjustments, net, pretax	$ 0	$ (1,582)	$ 1,283

Derivative Financial Instrume83

Derivative Financial Instruments - Narrative (Details) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2016USD ($)	Sep. 30, 2016USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Jan. 21, 2009oz
Palmarejo gold production royalty
Derivative [Line Items]
Production to be sold, percent						50.00%
Payment made for gold on the end of royalty obligation | oz						4,167
Palmarejo gold production royalty | Maximum
Derivative [Line Items]
Payable ounces under royalty obligation | oz						400,000
Franco-Nevada warrant
Derivative [Line Items]
Market-to-market adjustment	$ 5,900	$ 17,000
Realized losses	$ 10,800	$ 13,900
Concentrate Sales Contracts
Derivative [Line Items]
Provisional gain (loss) on derivatives and commodity contracts			$ 631	$ (239)	$ 214
Silver and gold options
Derivative [Line Items]
Net derivative gain (loss)				$ 1,600	$ 1,300

Acquisitions - JDS Silver (Deta

Acquisitions - JDS Silver (Details) - JDS Silver Holdings, Ltd. shares in Thousands	1 Months Ended
	Oct. 31, 2017USD ($)shares
Business Acquisition [Line Items]
Shares issued | shares	4,200
Transaction advisory fees and other acquisition costs	$ 3,300,000
Cash	156,247,000
Contingent consideration, liability	47,705,000
Cash consideration	100,000,000
Total purchase price	239,959,000
Assets:
Receivables and other assets	9,881,000
Property, plant, and equipment	29,943,000
Mining properties, net	288,464,000
Total assets acquired	328,288,000
Liabilities:
Accounts payable and accrued liabilities	13,077,000
Asset retirement obligation	6,982,000
Debt and capital lease	20,149,000
Deferred income taxes	48,121,000
Total liabilities assumed	88,329,000
Net assets acquired	239,959,000
Common Stock
Business Acquisition [Line Items]
Common shares issued (value)	$ 36,007,000
Common shares issued (in shares) | shares	4,191,679
Price per common share issued (UDS per share)	$ 8,590

Acquisitions - Paramount (Detai

Acquisitions - Paramount (Details) - Paramount Gold and Silver Corp. shares in Thousands	Apr. 17, 2015USD ($)shares
Business Acquisition [Line Items]
Common stock conversion ratio	0.2016
Common shares issued (value)	$ 188,817,000
Cash	8,530,000
Transaction advisory fees and other acquisition costs	4,020,000
Total purchase price	201,367,000
Total assets acquired	307,193,000
Total liabilities assumed	105,826,000
Net assets acquired	201,367,000
Payments to acquire additional interests	$ 1,500,000
Ownership percentage acquired	4.90%
Common Stock
Business Acquisition [Line Items]
Common shares issued (in shares) | shares	32,667,327
Price per common share issued (UDS per share)	$ 5,780

Acquisitions - Wharf Gold Mine

Acquisitions - Wharf Gold Mine (Details) - Wharf Gold Mine $ in Thousands	Feb. 20, 2015USD ($)
Business Acquisition [Line Items]
Payments to acquire businesses, gross	$ 99,400
Transaction advisory fees and other acquisition costs	2,100
Total assets acquired	133,269
Total liabilities assumed	33,873
Net assets acquired	$ 99,396

Retirement Savings Plan (Detail

Retirement Savings Plan (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Postemployment Benefits [Abstract]
Percentage of maximum limit for employees to contribute their cash compensation	75.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	4.00%
Total plan expenses		$ 7.3	$ 5.4	$ 2.9

Other, Net (Details)

Other, Net (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Income and Expenses [Abstract]
Foreign exchange gain (loss)	$ (11,456)	$ 1,281		$ (16,021)
Gain (loss) on sale of assets and investments	11,334	(1,037)		(352)
Gain on sale of the Joaquin project	0	21,138	$ 0	0
Gain on repurchase of the Rochester royalty obligation	0	2,332		0
Gain (loss) on the sale of the Endeavor stream and other royalties	0	1,036		0
Impairment of equity securities	(703)	(426)	(700)	(2,346)
Other	$ 923	2,319		1,052
Other, net		$ 26,643	$ 98	$ (17,667)

Assets and Liabilities Held F89

Assets and Liabilities Held For Sale - Statements (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CURRENT ASSETS
Current assets	$ 91,421				$ 71,442				$ 91,421	$ 71,442
CURRENT LIABILITIES
Current liabilities	50,677				15,470				50,677	15,470
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Write-downs									3,390
Income (loss) from discontinued operations.	(6,724)	$ (4,924)	$ (960)	$ 364	2,020	$ 23,436	$ 6,217	$ 1,244	(12,244)	32,917	$ (79,372)
Cash provided by (used in) operating activities, discontinued operations									11,296	29,356	26,130
Cash provided by (used in) investing activities, discontinued operations									(1,392)	(6,631)	(6,220)
Held-for-sale
CURRENT ASSETS
Cash and cash equivalents	32,931				43,870				32,931	43,870
Receivables	7,295				7,016				7,295	7,016
Inventory	10,655				12,590				10,655	12,590
Prepaid expenses and other	13,415				7,966				13,415	7,966
Property, plant and equipment, net	20,240				0				20,240	0
Mining properties, net	6,885				0				6,885	0
Current assets	91,421				71,442				91,421	71,442
NON-CURRENT ASSETS
Property, plant and equipment, net	0				23,373				0	23,373
Mining properties, net	0				8,165				0	8,165
Receivables	0				17,225				0	17,225
TOTAL ASSETS	91,421				120,205				91,421	120,205
CURRENT LIABILITIES
Accounts payable	10,974				8,675				10,974	8,675
Accrued liabilities and other	5,161				6,382				5,161	6,382
Reclamation	15,179				413				15,179	413
Other	19,363				0				19,363	0
Current liabilities	50,677				15,470				50,677	15,470
NON-CURRENT LIABILITIES
Reclamation	0				10,212				0	10,212
Deferred tax liabilities	0				4,987				0	4,987
Other	0				18,558				0	18,558
TOTAL LIABILITIES	$ 50,677				$ 49,227				50,677	49,227
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Revenue									73,065	93,880	84,679
Costs applicable to sales									74,074	74,166	75,827
Amortization									5,899	6,633	17,798
General and administrative									172	101	198
Exploration									23	0	126
Write-downs									3,390	0	66,712
Pre-development, reclamation, and other									4,664	2,808	1,589
Interest expense, net of capitalized interest									(27)	(24)	(725)
Other, net									1,763	1,777	1,736
Pretax profit or loss of discontinued operations related to major classes of pretax profit (loss)									(13,421)	11,925	(76,560)
Pretax gain or loss on the disposal of the discontinued operation									0	0	0
Total pretax gain or loss on discontinued operations									(13,421)	11,925	(76,560)
Income and mining tax (expense) benefit									1,177	20,992	(2,812)
Cash provided by (used in) operating activities, discontinued operations									11,296	29,356	26,130
Cash provided by (used in) investing activities, discontinued operations									$ (1,392)	$ (6,631)	$ (6,220)

Assets and Liabilities Held F90

Assets and Liabilities Held For Sale - Narrative (Details) - USD ($) $ in Thousands	Dec. 22, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Write-down of assets		$ 3,400
Cash provided by (used in) operating activities, discontinued operations		11,296	$ 29,356	$ 26,130
Cash provided by (used in) investing activities, discontinued operations		(1,392)	(6,631)	(6,220)
Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net smelter returns royalty (percentage)	2.00%
Net smelter returns royalty, estimated value	$ 5,000
Value added tax receivable, outstanding	13,000
Promissory note receivable	28,000
Expected post-closing obligations	$ 6,000
Cash provided by (used in) operating activities, discontinued operations		11,296	29,356	26,130
Cash provided by (used in) investing activities, discontinued operations		$ (1,392)	$ (6,631)	$ (6,220)

Net Income (Loss) Per Share (De

Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net Income (Loss) Attributable to Coeur Stockholders
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	$ 14,349	$ (11,728)	$ (9,995)	$ 18,299	$ (10,328)	$ 46,123	$ 8,280	$ (21,640)	$ 10,925	$ 22,435	$ (287,811)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	(6,724)	(4,924)	(960)	364	2,020	23,436	6,217	1,244	(12,244)	32,917	(79,372)
Net income (loss)	$ 7,625	$ (16,652)	$ (10,955)	$ 18,663	$ (8,308)	$ 69,559	$ 14,497	$ (20,396)	$ (1,319)	$ 55,352	$ (367,183)
Weighted Average Number of Shares Outstanding
Weighted Average Number of Shares Outstanding, Basic									180,096,000	159,853,000	129,639,000
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements									4,048,000	3,606,000	0
Weighted Average Number of Shares Outstanding, Diluted									184,144,000	163,459,000	129,639,000
Basic EPS
Income (Loss) from Continuing Operations, Per Basic Share	$ 0.08	$ (0.06)	$ (0.05)	$ 0.10	$ (0.06)	$ 0.29	$ 0.05	$ (0.15)	$ 0.06	$ 0.14	$ (2.22)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	(0.04)	(0.03)	(0.01)	0	0.01	0.14	0.04	0.01	(0.07)	0.21	(0.61)
Basic (in dollars per share)	0.04	(0.09)	(0.06)	0.10	(0.05)	0.43	0.09	(0.14)	(0.01)	0.35	(2.83)
Diluted EPS
Income (Loss) from Continuing Operations, Per Diluted Share	0.04	(0.09)	(0.06)	0.10	(0.05)	0.42	0.09	(0.14)	0.06	0.14	(2.22)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	0.08	(0.06)	(0.05)	0.10	(0.06)	0.28	0.05	(0.15)	(0.07)	0.20	(0.61)
Diluted (in dollars per share)	$ (0.04)	$ (0.03)	$ (0.01)	$ 0	$ 0.01	$ 0.14	$ 0.04	$ 0.01	$ (0.01)	$ 0.34	$ (2.83)
Convertible Senior Notes Due March 2028 [Member]
Earnings Per Share (Textual) [Abstract]
Stated interest rate											3.25%
Stock Options [Member]
Earnings Per Share (Textual) [Abstract]
Number of shares of common stock equivalents related to convertible debt									653,354	386,771	3,239,425

Investments (Details)

Investments (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Investment in Marketable Securities (Textual) [Abstract]
Impairment of equity securities	$ 703	$ 426	$ 700	$ 2,346
Held-to-maturity Securities, Restricted		20,800	17,600
Equity securities
Available-for-sale Securities
Cost		21,771	3,107
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax		(881)	0
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax		7,355	1,381
Available-for-sale Securities		28,245	4,488
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		881
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		5,662
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		5,662
Debt Securities
Available-for-sale Securities
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax		(85)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		85
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		6,592
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		6,592
Equity and debt securities
Available-for-sale Securities
Cost		28,448
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax		(966)
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax		7,355
Available-for-sale Securities		34,837
Metalla Royalty & Streaming Ltd. | Equity securities
Available-for-sale Securities
Cost		6,294
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax		0
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax		1,354
Available-for-sale Securities		7,648
Metalla Royalty & Streaming Ltd. | Debt Securities
Available-for-sale Securities
Cost		6,677
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax		(85)
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax		0
Available-for-sale Securities		6,592
Corvus Gold Inc. [Member] | Equity securities
Available-for-sale Securities
Cost		3,582
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax		0
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax		4,518
Available-for-sale Securities		8,100
Almaden Minerals, Ltd. [Member] | Equity securities
Available-for-sale Securities
Cost		3,125
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax		(235)
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax		0
Available-for-sale Securities		2,890
Northern Empire Resources Corp. [Member] | Equity securities
Available-for-sale Securities
Cost		4,489
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax		0
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax		1,077
Available-for-sale Securities		5,566
Rockhaven Resources, Ltd. [Member] | Equity securities
Available-for-sale Securities
Cost		2,064
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax		(193)
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax		0
Available-for-sale Securities		1,871
Kootenay Silver, Inc. [Member] | Equity securities
Available-for-sale Securities
Cost		738	2,645
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax		0	0
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax		1	0
Available-for-sale Securities		739	2,645
Silver Bull Resources, Inc. [Member] | Equity securities
Available-for-sale Securities
Cost			233
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax			0
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax			783
Available-for-sale Securities			1,016
Other Investments [Member] | Equity securities
Available-for-sale Securities
Cost		1,479	229
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax		(453)	0
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax		405	598
Available-for-sale Securities		$ 1,431	$ 827

Receivables (Details)

Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Receivables - current portion
Accounts receivable - trade	$ 5,883	$ 5,973
Refundable income tax	7	1,038
Refundable value added tax	10,982	44,150
Accounts receivable - other	2,197	2,254
Receivables, net current portion	19,069	53,415
Receivables - non-current portion
Refundable value added tax	28,750	2,088
Income Taxes Receivable, Noncurrent	0	11,657
Accounts Receivable, Net, Noncurrent	28,750	13,745
Total receivables	$ 47,819	$ 67,160

Receivables (Details Textual)

Receivables (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Value Added Tax Receivable, Noncurrent	$ 28,750	$ 2,088
Palmarejo [Member]
Property, Plant and Equipment [Line Items]
Value Added Tax Receivable, Noncurrent	$ 26,800

Inventory and Ore on Leach Pa95

Inventory and Ore on Leach Pads (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Inventory, Finished Goods, Net of Reserves	$ 6,831	$ 17,994
Other Inventory, Net of Reserves	18,803	41,955
Inventory, Supplies, Net of Reserves	32,596	33,487
Inventory	58,230	93,436
Ore on Leach Pad, Current	73,752	64,167
Ore on leach pads, noncurrent	65,393	67,231
Inventory, Ore Stockpiles on Leach Pads, Gross	139,145	131,398
Inventory and Ore on Leach Pads	$ 197,375	$ 224,834

Property, Plant and Equipment96

Property, Plant and Equipment (Details) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Property, plant and equipment
Land		$ 9,408	$ 7,869
Building improvements		554,160	532,122
Capitalized leases for machinery, equipment and buildings		82,753	54,297
Property, plant and equipment, gross		646,321	594,288
Accumulated depreciation and amortization	[1]	(448,001)	(423,361)
Property Plant and Equipment Net before Construction in Progress		198,320	170,927
Construction in Progress		56,417	22,496
Property, plant and equipment, net		$ 254,737	$ 193,423
[1]	Includes $28.2 million and $14.8 million of accumulated amortization related to assets under capital leases at December 31, 2017 and 2016, respectively.

Property, Plant and Equipment97

Property, Plant and Equipment (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ 28.2	$ 14.8
Operating Leases, Rent Expense, Net	$ 18	$ 16.8	$ 14.3

Mining Properties (Details)

Mining Properties (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Mining Properties
Operational mining properties:	$ 804,845	$ 648,780
Accumulated depletion	(485,368)	(439,682)
Operational mining properties, net	319,477	209,098
Mineral interest	969,341	771,497
Accumulated depletion	(459,249)	(430,305)
Mineral interest, net	510,092	341,192
Total mining properties	829,569	550,290
Palmarejo [Member]
Mining Properties
Operational mining properties:	214,383	174,890
Accumulated depletion	(146,598)	(134,995)
Operational mining properties, net	67,785	39,895
Mineral interest	629,303	629,303
Accumulated depletion	(435,215)	(381,686)
Mineral interest, net	194,088	247,617
Total mining properties	261,873	287,512
Rochester [Member]
Mining Properties
Operational mining properties:	193,881	165,230
Accumulated depletion	(144,390)	(138,244)
Operational mining properties, net	49,491	26,986
Mineral interest	0	0
Accumulated depletion	0	0
Mineral interest, net	0	0
Total mining properties	49,491	26,986
Silvertip [Member]
Mining Properties
Operational mining properties:	57,214
Accumulated depletion	0
Operational mining properties, net	57,214
Mineral interest	245,116
Accumulated depletion	0
Mineral interest, net	245,116
Total mining properties	302,330
Kensington [Member]
Mining Properties
Operational mining properties:	298,749	271,175
Accumulated depletion	(178,632)	(154,744)
Operational mining properties, net	120,117	116,431
Mineral interest	0	0
Accumulated depletion	0	0
Mineral interest, net	0	0
Total mining properties	120,117	116,431
Wharf [Member]
Mining Properties
Operational mining properties:	40,618	37,485
Accumulated depletion	(15,748)	(11,699)
Operational mining properties, net	24,870	25,786
Mineral interest	45,837	45,837
Accumulated depletion	(24,034)	(19,249)
Mineral interest, net	21,803	26,588
Total mining properties	46,673	52,374
La Preciosa [Member]
Mining Properties
Operational mining properties:	0	0
Accumulated depletion	0	0
Operational mining properties, net	0	0
Mineral interest	49,085	49,085
Accumulated depletion	0	0
Mineral interest, net	49,085	49,085
Total mining properties	$ 49,085	49,085
Joaquin Project - Argentina
Mining Properties
Operational mining properties:		0
Accumulated depletion
Operational mining properties, net		0
Mineral interest		10,000
Accumulated depletion		0
Mineral interest, net		10,000
Total mining properties		10,000
Other Mining Properties [Member]
Mining Properties
Operational mining properties:		0
Accumulated depletion		0
Operational mining properties, net		0
Mineral interest		37,272
Accumulated depletion		(29,370)
Mineral interest, net		7,902
Total mining properties		$ 7,902

Mining Properties (Details Text

Mining Properties (Details Textual) - USD ($) $ in Thousands	1 Months Ended		9 Months Ended		12 Months Ended
	Jul. 31, 2017	Feb. 28, 2017	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Gain (loss) on sale of assets and investments				$ 0	$ 21,138	$ 0	$ 0
Joaquin Project - Argentina
Property, Plant and Equipment [Line Items]
Transfer of financial assets accounted for as sales, amount		$ 27,400
Net Smelter Return Percentage Paid		2.00%
Gain (loss) on sale of assets and investments			$ 21,100
Non-core three royalties and stream
Property, Plant and Equipment [Line Items]
Gain (loss) on sale of assets and investments	$ 1,200
Transfers of Financial Assets Accounted for as Sale, Initial Fair Value of Assets Obtained as Proceeds	13,000
Certain Loans Acquired in Transfer Accounted for as Available-for-sale Debt Securities, Outstanding Balance	$ 6,700

Debt (Details)

Debt (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015	Sep. 30, 2017
Long term debt and capital lease obligations
Current		$ 30,753		$ 11,955
Debt		380,569		198,682
Interest paid on Revolving Credit Facility		885		0		$ 0
Interest Paid on Convertible Notes due 2028		0		13		54
Interest expenses incurred for various debt instruments
Interest paid on Senior Notes due 2024		8,608		0		0
Interest Paid on Senior Notes due 2021		6,221		28,871		33,437
Interest paid on term loan due 2020		0		4,939		4,715
Interest Paid on Capital Leases		1,621		1,422		999
Accretion of Franco Nevada royalty obligation		0		1,211		6,567
Debt Issuance Cost (Deprecated 2016-01-31)		809		1,933		2,257
Amortization of debt issuance costs		(71)		(345)		(409)
Accretion		260		0		0
Interest Expense, Debt		42		58		350
Capitalized interest		(1,935)		(1,206)		(2,992)
Total interest expense, net of capitalized interest		16,440		36,896		$ 44,978
Revolving Credit Facility
Long term debt and capital lease obligations
Debt		100,000	[1]	0	[2]
Silvertip Debt Obligation [Member]
Long term debt and capital lease obligations
Debt		0		0
Senior Notes due 2024
Long term debt and capital lease obligations
Debt	[1]	245,088		0
Senior Notes due 2021
Long term debt and capital lease obligations
Debt	[2]	0		175,991
Stated interest rate							7.875%
Capital Lease Obligations [Member]
Long term debt and capital lease obligations
Debt		35,481		22,691
Revolving Credit Facility
Long term debt and capital lease obligations
Current	[2]	0		0
Silvertip Debt Obligation [Member]
Long term debt and capital lease obligations
Current		14,194		0
Senior Notes due 2024
Long term debt and capital lease obligations
Current	[1]	0		0
Senior Notes due 2021
Long term debt and capital lease obligations
Current	[2]	0		0
Capital Lease Obligations [Member]
Long term debt and capital lease obligations
Current		$ 16,559		$ 11,955
Revolving Credit Facility
Long term debt and capital lease obligations
Stated interest rate		3.70%
[1]	Net of unamortized debt issuance costs of $4.9 million at December 31, 2017.
[2]	Net of unamortized debt issuance costs and premium received of $2.0 million at December 31, 2016.

Debt (Details Textual)

Debt (Details Textual) - USD ($)	1 Months Ended		12 Months Ended
	Sep. 30, 2017	May 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Jun. 30, 2017
Debt Instrument [Line Items]
Gain (Loss) on Extinguishment of Debt			$ 9,342,000	$ 21,365,000	$ (15,916,000)
Senior Notes due 2021
Debt Instrument [Line Items]
Stated interest rate	7.875%
Silvertip Debt Obligation [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			5,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Net unamortized debt issuance costs			1,900,000
Senior Notes due 2024
Debt Instrument [Line Items]
Net unamortized debt issuance costs			4,900,000
Debt Instrument, Face Amount		$ 250,000,000
Proceeds from Debt		$ 245,000,000
Stated interest rate		5.875%
Debt Instrument, Redemption Price, Percentage		100.00%
Senior Notes due 2021
Debt Instrument [Line Items]
Net unamortized debt issuance costs				$ 2,000,000
Debt Instrument, Repurchase Amount		$ 178,000,000
Gain (Loss) on Extinguishment of Debt			9,300,000
Debt Instrument, Redemption, Equity Offering [Member] | Senior Notes due 2024
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed		35.00%
Debt Instrument, Redemption Price, Percentage		105.875%
Debt Instrument, Tender [Member] | Senior Notes due 2021
Debt Instrument [Line Items]
Debt Instrument, Repurchase Amount		$ 118,100,000
Debt Instrument, Redemption Price, Per $1,000 Principal		$ 1,043.88
Debt Instrument, Redeemed [Member] | Senior Notes due 2021
Debt Instrument [Line Items]
Debt Instrument, Repurchase Amount						$ 59,900,000
Debt Instrument, Redemption Price, Per $1,000 Principal						$ 1,039.38
Letter of Credit [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			12,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 200,000,000
Line of Credit Facility, Additional Borrowing Capacity	$ 50,000,000
Debt Instrument, Term	4 years
Line of Credit Facility, Current Borrowing Capacity			$ 88,000,000
Stated interest rate			3.70%
Silvertip [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount			$ 100,000,000
Base Rate [Member] | Minimum | Revolving Credit Facility
Debt Instrument [Line Items]
Stated interest rate	1.00%
Base Rate [Member] | Maximum | Revolving Credit Facility
Debt Instrument [Line Items]
Stated interest rate	1.75%
London Interbank Offered Rate (LIBOR) [Member] | Silvertip Debt Obligation [Member]
Debt Instrument [Line Items]
Silvertip Debt Obligation, Interest Rate, Two of Three Tranches			5.50%
Silvertip Debt Obligation, Interest Rate, One of Three Tranches			6.675%
London Interbank Offered Rate (LIBOR) [Member] | Minimum | Revolving Credit Facility
Debt Instrument [Line Items]
Stated interest rate	2.00%
London Interbank Offered Rate (LIBOR) [Member] | Maximum | Revolving Credit Facility
Debt Instrument [Line Items]
Stated interest rate	2.75%

Debt - Schedule of Future Minim

Debt - Schedule of Future Minimum Lease Payments (Details) $ in Thousands	Dec. 31, 2017USD ($)
Operating leases
Operating leases, 2018	$ 5,220
Operating leases, 2019	5,154
Operating leases, 2020	4,669
Operating leases, 2021	3,798
Operating leases, 2022	2,646
Operating leases, thereafter	4,099
Operating leases, total	25,586
Operating leases, less: imputed interest	0
Capital leases, net lease obligation	25,586
Capital leases
Capital leases, 2018	18,758
Capital leases, 2019	13,938
Capital leases, 2020	11,018
Capital leases, 2021	9,646
Capital leases, 2022	3,510
Capital leases, thereafter	40
Capital leases, total	56,910
Capital leases, less: imputed interest	(4,696)
Capital leases, net lease obligation	$ 52,214

Supplemental Guarantor Infor103

Supplemental Guarantor Information Condensed Consolidated Statements of Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Revenues	$ 214,585	$ 159,919	$ 149,540	$ 185,554	$ 139,204	$ 148,762	$ 156,822	$ 127,109	$ 709,598		$ 571,897		$ 561,407
Costs applicable to sales	121,982	101,559	102,229	114,490	84,903	84,594	81,820	84,058	440,260	[1]	335,375	[1]	403,827	[1]
Amortization	44,722	32,401	30,733	38,693	28,625	26,040	35,653	26,210	146,549		116,528		125,953
General and Administrative Expense									33,616		29,275		32,636
Exploration	7,454	9,792	7,813	5,252	5,260	3,706	2,233	1,731	30,311		12,930		11,521
Write-downs									0		4,446		246,625
Pre-development, reclamation, and other									18,936		14,411		16,204
Total costs and expenses									669,672		512,965		836,766
Gain (Loss) on Extinguishment of Debt									(9,342)		(21,365)		15,916
Gain (loss) on derivative instruments									(864)		(11,581)		5,202
Other, net									26,643		98		(17,667)
Interest expense, net									(16,440)		(36,896)		(44,978)
Total other income (expense), net									(3)		(69,744)		(41,527)
Total									39,923		(10,812)		(316,886)
Income and mining tax benefit (expense)									(28,998)		33,247		29,075
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest									10,925		22,435		(287,811)
Income (Loss) from Equity Method Investments									0		0		0
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	(6,724)	(4,924)	(960)	364	2,020	23,436	6,217	1,244	(12,244)		32,917		(79,372)
Net income (loss)	$ 7,625	$ (16,652)	$ (10,955)	$ 18,663	$ (8,308)	$ 69,559	$ 14,497	$ (20,396)	(1,319)		55,352		(367,183)
Unrealized gain (loss) on available for sale securities									3,227		3,222		(4,154)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax									426		703		2,346
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax									1,354		(2,691)		894
Other comprehensive income (loss)									5,007		1,234		(914)
COMPREHENSIVE INCOME (LOSS)									3,688		56,586		(368,097)
Revenue									709,598		568,617		554,557
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Revenues									433,050		423,488		378,278
Costs applicable to sales									293,340		252,836		261,830
Amortization									71,340		77,392		83,325
General and Administrative Expense									28		250		35
Exploration									13,689		6,127		3,931
Write-downs											0		1,630
Pre-development, reclamation, and other									7,497		5,839		5,920
Total costs and expenses									385,894		342,444		356,671
Gain (Loss) on Extinguishment of Debt									0		0		0
Gain (loss) on derivative instruments									(864)		(4,133)		818
Other, net									2,936		2,139		(3,106)
Interest expense, net									(975)		(861)		(966)
Total other income (expense), net									1,097		(2,855)		(3,254)
Total									48,253		78,189		18,353
Income and mining tax benefit (expense)									(5,758)		(7,517)		(2,354)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest									42,495		70,672		15,999
Income (Loss) from Equity Method Investments									(577)		(4,353)		(14,814)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent									0		0		0
Net income (loss)									41,918		66,319		1,185
Unrealized gain (loss) on available for sale securities									915		3,156		(3,118)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax									426		703		2,346
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax									486		(3,181)		894
Other comprehensive income (loss)									1,827		678		122
COMPREHENSIVE INCOME (LOSS)									43,745		66,997		1,307
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Revenues									276,548		148,409		183,129
Costs applicable to sales									146,920		82,539		141,997
Amortization									74,052		37,578		40,637
General and Administrative Expense									209		321		196
Exploration									15,030		5,207		5,325
Write-downs											4,446		244,995
Pre-development, reclamation, and other									6,734		6,528		6,201
Total costs and expenses									242,945		136,619		439,351
Gain (Loss) on Extinguishment of Debt									0		0		0
Gain (loss) on derivative instruments									0		(5,813)		3,160
Other, net									10,179		(1,314)		(15,121)
Interest expense, net									(8,534)		(5,961)		(7,921)
Total other income (expense), net									1,645		(13,088)		(19,882)
Total									35,248		(1,298)		(276,104)
Income and mining tax benefit (expense)									(25,410)		29,031		29,602
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest									9,838		27,733		(246,502)
Income (Loss) from Equity Method Investments									4,416		0		0
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent									(12,244)		32,917		(79,372)
Net income (loss)									2,010		60,650		(325,874)
Unrealized gain (loss) on available for sale securities									0		0		0
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax									0		0		0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax									0		0		0
Other comprehensive income (loss)									0		0		0
COMPREHENSIVE INCOME (LOSS)									2,010		60,650		(325,874)
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues									0		0		0
Costs applicable to sales									0		0		0
Amortization									1,157		1,558		1,991
General and Administrative Expense									33,379		28,704		32,405
Exploration									1,592		1,596		2,265
Write-downs											0		0
Pre-development, reclamation, and other									4,705		2,044		4,083
Total costs and expenses									40,833		33,902		40,744
Gain (Loss) on Extinguishment of Debt									(9,342)		(21,365)		15,916
Gain (loss) on derivative instruments									0		(1,635)		1,224
Other, net									21,254		4,357		4,336
Interest expense, net									(14,657)		(35,158)		(39,867)
Total other income (expense), net									(2,745)		(53,801)		(18,391)
Total									(43,578)		(87,703)		(59,135)
Income and mining tax benefit (expense)									2,170		11,733		1,827
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest									(41,408)		(75,970)		(57,308)
Income (Loss) from Equity Method Investments									40,089		131,322		(309,875)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent									0		0		0
Net income (loss)									(1,319)		55,352		(367,183)
Unrealized gain (loss) on available for sale securities									3,227		3,222		(4,154)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax									426		703		2,346
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax									1,354		(2,691)		894
Other comprehensive income (loss)									5,007		1,234		(914)
COMPREHENSIVE INCOME (LOSS)									3,688		56,586		(368,097)
Eliminations
Condensed Financial Statements, Captions [Line Items]
Revenues									0		0		0
Costs applicable to sales									0		0		0
Amortization									0		0		0
General and Administrative Expense									0		0		0
Exploration									0		0		0
Write-downs											0		0
Pre-development, reclamation, and other									0		0		0
Total costs and expenses									0		0		0
Gain (Loss) on Extinguishment of Debt									0		0		0
Gain (loss) on derivative instruments									0		0		0
Other, net									(7,726)		(5,084)		(3,776)
Interest expense, net									7,726		5,084		3,776
Total other income (expense), net									0		0		0
Total									0		0		0
Income and mining tax benefit (expense)									0		0		0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest									0		0		0
Income (Loss) from Equity Method Investments									(43,928)		(126,969)		324,689
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent									0		0		0
Net income (loss)									(43,928)		(126,969)		324,689
Unrealized gain (loss) on available for sale securities									(915)		(3,156)		3,118
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax									(426)		(703)		(2,346)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax									(486)		3,181		(894)
Other comprehensive income (loss)									(1,827)		(678)		(122)
COMPREHENSIVE INCOME (LOSS)									$ (45,755)		$ (127,647)		$ 324,567
[1]	Excludes amortization.

Supplemental Guarantor Infor104

Supplemental Guarantor Information Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities, Continuing Operations										$ 197,160	$ 96,461	$ 87,412
Cash Provided by (Used in) Operating Activities, Discontinued Operations										11,296	29,356	26,130
Cash provided by (used in) operating activities		$ 91,811	$ 37,308	$ 24,103	$ 43,938	$ 21,423	$ 39,201	$ 34,752	$ 1,085	208,456	125,817	113,542
Capital expenditures		(47,054)	$ (28,982)	$ (37,107)	(23,591)	(28,134)	$ (22,626)	$ (21,971)	(21,651)	(136,734)	(94,382)	(88,973)
Payments to Acquire Businesses, Net of Cash Acquired										(156,248)	(1,417)	(110,846)
Proceeds from the sale of assets										16,705	16,296	607
Purchase of short term investments and equity securities										(15,058)	(178)	(1,880)
Sales and maturities of short-term investments										11,321	7,077	605
Payments for (Proceeds from) Other Investing Activities										(217)	(4,208)	(4,586)
Payments to Acquire Interest in Subsidiaries and Affiliates										0	0	0
Net Cash Provided by (Used in) Investing Activities, Continuing Operations										(280,231)	(76,812)	(205,073)
Cash Provided by (Used in) Investing Activities, Discontinued Operations										(1,392)	(6,631)	(6,220)
CASH USED IN INVESTING ACTIVITIES										(281,623)	(83,443)	(211,293)
Proceeds from Issuance of Unsecured Debt										342,620	0	150,000
Proceeds from Issuance of Common Stock										0	269,556	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities										(203,045)	(318,153)	(70,603)
Cash payments on gold production royalty										0	(27,155)	(39,235)
Proceeds From Repayment Intercompany Borrowings										0	0	0
Proceeds from (Payments for) Other Financing Activities										(3,746)	172	(542)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations										135,829	(75,580)	39,620
Cash Provided by (Used in) Financing Activities, Discontinued Operations										(84)	(4,648)	(10,612)
Net Cash Provided by (Used in) Financing Activities										135,745	(80,228)	29,008
Effect of exchange rate changes on cash and cash equivalents										203	(678)	(1,404)
Net Cash Provided by (Used in) Discontinued Operations	[1]									(10,939)	1,576	11,552
CashAndCashEquivalentsPeriodIncreaseDecreaseExcludingNetCashProvidedByUsedInDiscontinuedOperationsAssetsHeldForSale										73,720	(40,108)	(81,699)
Cash and cash equivalents at beginning of period					118,312				158,420	118,312	158,420	240,119
Cash and cash equivalents at end of period		192,032				118,312				192,032	118,312	158,420
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities, Continuing Operations										(8,470)	62,207	(377,091)
Cash Provided by (Used in) Operating Activities, Discontinued Operations										0	0	0
Cash provided by (used in) operating activities										(8,470)	62,207	(377,091)
Capital expenditures										(1,941)	(246)	(514)
Payments to Acquire Businesses, Net of Cash Acquired										(156,248)	0	(110,846)
Proceeds from the sale of assets										8,917	0	0
Purchase of short term investments and equity securities										(15,057)	(178)	(1,880)
Sales and maturities of short-term investments										9,157	501	2
Payments for (Proceeds from) Other Investing Activities										(3,020)	(4,396)	(4,710)
Payments to Acquire Interest in Subsidiaries and Affiliates										(34,419)	(107,855)	282,041
Net Cash Provided by (Used in) Investing Activities, Continuing Operations										(192,611)	(112,174)	164,093
Cash Provided by (Used in) Investing Activities, Discontinued Operations										0	0	0
CASH USED IN INVESTING ACTIVITIES										(192,611)	(112,174)	164,093
Proceeds from Issuance of Unsecured Debt										342,620		150,000
Proceeds from Issuance of Common Stock											269,556
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities										(185,538)	(303,686)	(62,930)
Cash payments on gold production royalty											0	0
Proceeds From Repayment Intercompany Borrowings										(34,359)	(45,850)	(12,232)
Proceeds from (Payments for) Other Financing Activities										(3,746)	172	(542)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations										187,695	11,892	98,760
Cash Provided by (Used in) Financing Activities, Discontinued Operations										0	0	0
Net Cash Provided by (Used in) Financing Activities										187,695	11,892	98,760
Effect of exchange rate changes on cash and cash equivalents										0	0	0
Net Cash Provided by (Used in) Discontinued Operations										0	0	0
CashAndCashEquivalentsPeriodIncreaseDecreaseExcludingNetCashProvidedByUsedInDiscontinuedOperationsAssetsHeldForSale										(13,386)	(38,075)	(114,238)
Cash and cash equivalents at beginning of period					58,048				96,123	58,048	96,123	210,361
Cash and cash equivalents at end of period		44,662				58,048				44,662	58,048	96,123
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities, Continuing Operations										118,667	134,892	86,486
Cash Provided by (Used in) Operating Activities, Discontinued Operations										0	0	0
Cash provided by (used in) operating activities										118,667	134,892	86,486
Capital expenditures										(85,967)	(58,084)	(52,376)
Payments to Acquire Businesses, Net of Cash Acquired										0	0	0
Proceeds from the sale of assets										6,902	4,800	289
Purchase of short term investments and equity securities										(1)	0	0
Sales and maturities of short-term investments										2,164	6,576	532
Payments for (Proceeds from) Other Investing Activities										0	368	234
Payments to Acquire Interest in Subsidiaries and Affiliates										12,911	25,047	20,239
Net Cash Provided by (Used in) Investing Activities, Continuing Operations										(63,991)	(21,293)	(31,082)
Cash Provided by (Used in) Investing Activities, Discontinued Operations										0	0	0
CASH USED IN INVESTING ACTIVITIES										(63,991)	(21,293)	(31,082)
Proceeds from Issuance of Unsecured Debt										0		0
Proceeds from Issuance of Common Stock											0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities										(7,926)	(10,894)	(7,428)
Cash payments on gold production royalty											0	0
Proceeds From Repayment Intercompany Borrowings										44,540	86,914	19,518
Proceeds from (Payments for) Other Financing Activities										0	0	0
Net Cash Provided by (Used in) Financing Activities, Continuing Operations										(52,466)	(97,808)	(26,946)
Cash Provided by (Used in) Financing Activities, Discontinued Operations										0	0	0
Net Cash Provided by (Used in) Financing Activities										(52,466)	(97,808)	(26,946)
Effect of exchange rate changes on cash and cash equivalents										6	4	(11)
Net Cash Provided by (Used in) Discontinued Operations										0	0	0
CashAndCashEquivalentsPeriodIncreaseDecreaseExcludingNetCashProvidedByUsedInDiscontinuedOperationsAssetsHeldForSale										2,216	15,795	28,447
Cash and cash equivalents at beginning of period					50,023				34,228	50,023	34,228	5,781
Cash and cash equivalents at end of period		52,239				50,023				52,239	50,023	34,228
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities, Continuing Operations										130,491	26,331	53,328
Cash Provided by (Used in) Operating Activities, Discontinued Operations										11,296	29,356	26,130
Cash provided by (used in) operating activities										141,787	55,687	79,458
Capital expenditures										(48,826)	(36,052)	(36,083)
Payments to Acquire Businesses, Net of Cash Acquired										0	(1,417)	0
Proceeds from the sale of assets										886	11,496	318
Purchase of short term investments and equity securities										0	0	0
Sales and maturities of short-term investments										0	0	71
Payments for (Proceeds from) Other Investing Activities										2,803	(180)	(110)
Payments to Acquire Interest in Subsidiaries and Affiliates										(881)	0	120
Net Cash Provided by (Used in) Investing Activities, Continuing Operations										(46,018)	(26,153)	(35,684)
Cash Provided by (Used in) Investing Activities, Discontinued Operations										(1,392)	(6,631)	(6,220)
CASH USED IN INVESTING ACTIVITIES										(47,410)	(32,784)	(41,904)
Proceeds from Issuance of Unsecured Debt										0		0
Proceeds from Issuance of Common Stock											0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities										(9,581)	(3,573)	(245)
Cash payments on gold production royalty											(27,155)	(39,235)
Proceeds From Repayment Intercompany Borrowings										(9,801)	(13,404)	(27,321)
Proceeds from (Payments for) Other Financing Activities										0	0	0
Net Cash Provided by (Used in) Financing Activities, Continuing Operations										220	(17,324)	(12,159)
Cash Provided by (Used in) Financing Activities, Discontinued Operations										(20,843)	(21,149)	(8,358)
Net Cash Provided by (Used in) Financing Activities										(20,623)	(38,473)	(20,517)
Effect of exchange rate changes on cash and cash equivalents										197	(682)	(1,393)
Net Cash Provided by (Used in) Discontinued Operations										(10,939)	1,576	11,552
CashAndCashEquivalentsPeriodIncreaseDecreaseExcludingNetCashProvidedByUsedInDiscontinuedOperationsAssetsHeldForSale										84,890	(17,828)	4,092
Cash and cash equivalents at beginning of period					10,241				28,069	10,241	28,069	23,977
Cash and cash equivalents at end of period		95,131				10,241				95,131	10,241	28,069
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities, Continuing Operations										(43,528)	(126,969)	324,689
Cash Provided by (Used in) Operating Activities, Discontinued Operations										0	0	0
Cash provided by (used in) operating activities										(43,528)	(126,969)	324,689
Capital expenditures										0	0	0
Payments to Acquire Businesses, Net of Cash Acquired										0	0	0
Proceeds from the sale of assets										0	0	0
Purchase of short term investments and equity securities										0	0	0
Sales and maturities of short-term investments										0	0	0
Payments for (Proceeds from) Other Investing Activities										0	0	0
Payments to Acquire Interest in Subsidiaries and Affiliates										22,389	82,808	(302,400)
Net Cash Provided by (Used in) Investing Activities, Continuing Operations										22,389	82,808	(302,400)
Cash Provided by (Used in) Investing Activities, Discontinued Operations										0	0	0
CASH USED IN INVESTING ACTIVITIES										22,389	82,808	(302,400)
Proceeds from Issuance of Unsecured Debt										0		0
Proceeds from Issuance of Common Stock											0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities										0	0	0
Cash payments on gold production royalty											0	0
Proceeds From Repayment Intercompany Borrowings										380	27,660	(20,035)
Proceeds from (Payments for) Other Financing Activities										0	0	0
Net Cash Provided by (Used in) Financing Activities, Continuing Operations										380	27,660	(20,035)
Cash Provided by (Used in) Financing Activities, Discontinued Operations										20,759	16,501	(2,254)
Net Cash Provided by (Used in) Financing Activities										21,139	44,161	(22,289)
Effect of exchange rate changes on cash and cash equivalents										0	0	0
Net Cash Provided by (Used in) Discontinued Operations										0	0	0
CashAndCashEquivalentsPeriodIncreaseDecreaseExcludingNetCashProvidedByUsedInDiscontinuedOperationsAssetsHeldForSale										0	0	0
Cash and cash equivalents at beginning of period					$ 0				$ 0	0	0	0
Cash and cash equivalents at end of period		$ 0				$ 0				$ 0	$ 0	$ 0
[1]	Less net cash provided by (used in) discontinued operations includes the following cash transactions: net subsidiary payments to parent company of $20,759, $16,501 during the years ended December 31, 2017, 2016, respectively, and net parent company payments to subsidiary of $2,254 during the year ended December 31, 2015.

Supplemental Guarantor Infor105

Supplemental Guarantor Information Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 192,032	$ 118,312
Receivables	19,069	53,415
Ore on leach pads	73,752	64,167
Inventory, Net	58,230	93,436
Prepaid expenses and other	15,053	10,015
Disposal Group, Including Discontinued Operation, Assets, Current	91,421	71,442
Current assets	449,557	410,787
Property, plant and equipment, net	254,737	193,423
Mining properties, net	829,569	550,290
Ore on leach pads	65,393	67,231
Restricted assets	20,847	17,597
Equity and debt securities	34,837	4,488
Receivables	28,750	13,745
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	0	0
Other Assets, Noncurrent	17,485	12,585
Disposal Group, Including Discontinued Operation, Assets, Noncurrent	0	48,763
TOTAL ASSETS	1,701,175	1,318,909
Accounts payable	48,592	44,660
Accrued liabilities and other	94,930	36,445
Debt	30,753	11,955
Royalty obligations	0	4,995
Reclamation	3,777	3,109
Disposal Group, Including Discontinued Operation, Liabilities, Current	50,677	15,470
Liabilities, Current	228,729	116,634
Debt	380,569	198,682
Royalty obligations	0	4,292
Reclamation	117,055	85,592
Deferred tax liabilities	105,148	69,811
Other long-term liabilities	54,697	41,654
Intercompany Payable Receivable	0	0
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent	0	33,757
Non-current liabilities	657,469	433,788
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 185,637,724 at December 31, 2017 and 180,933,287 at December 31, 2016	1,856	1,809
Additional paid-in capital	3,357,345	3,314,590
Accumulated deficit	(2,546,743)	(2,545,424)
Accumulated other comprehensive income (loss)	2,519	(2,488)
Stockholders' equity	814,977	768,487	$ 421,476	$ 554,328
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,701,175	1,318,909
Accrued Income Taxes, Current	25,788	3,721
Interest Payable, Current	1,513	5,892
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	44,662	58,048
Receivables	137	12
Ore on leach pads	0	0
Inventory, Net	0	0
Prepaid expenses and other	7,824	3,803
Disposal Group, Including Discontinued Operation, Assets, Current	0	0
Current assets	52,623	61,863
Property, plant and equipment, net	4,007	3,222
Mining properties, net	0	0
Ore on leach pads	0	0
Restricted assets	13,251	10,170
Equity and debt securities	33,569	0
Receivables	0	0
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	422,074	273,056
Other Assets, Noncurrent	320,335	221,381
Disposal Group, Including Discontinued Operation, Assets, Noncurrent		0
TOTAL ASSETS	845,859	569,692
Accounts payable	3,607	2,153
Accrued liabilities and other	13,205	12,881
Debt	0	0
Royalty obligations	0	0
Reclamation	0	0
Disposal Group, Including Discontinued Operation, Liabilities, Current	0	0
Liabilities, Current	16,812	15,034
Debt	345,088	175,991
Royalty obligations		0
Reclamation	0	0
Deferred tax liabilities	4,110	13,810
Other long-term liabilities	2,311	1,993
Intercompany Payable Receivable	(337,439)	(405,623)
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent		0
Non-current liabilities	14,070	(213,829)
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 185,637,724 at December 31, 2017 and 180,933,287 at December 31, 2016	1,856	1,809
Additional paid-in capital	3,357,345	3,314,590
Accumulated deficit	(2,546,743)	(2,545,424)
Accumulated other comprehensive income (loss)	2,519	(2,488)
Stockholders' equity	814,977	768,487
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	845,859	569,692
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	52,239	50,023
Receivables	7,922	6,865
Ore on leach pads	73,752	64,167
Inventory, Net	29,769	49,393
Prepaid expenses and other	2,816	1,459
Disposal Group, Including Discontinued Operation, Assets, Current	0	0
Current assets	166,498	171,907
Property, plant and equipment, net	161,487	139,885
Mining properties, net	216,281	195,791
Ore on leach pads	65,393	67,231
Restricted assets	227	226
Equity and debt securities	1,268	4,488
Receivables	0	0
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	223	11,650
Other Assets, Noncurrent	11,040	9,263
Disposal Group, Including Discontinued Operation, Assets, Noncurrent		0
TOTAL ASSETS	622,417	600,441
Accounts payable	24,534	24,921
Accrued liabilities and other	19,262	13,664
Debt	9,215	6,516
Royalty obligations	0	4,995
Reclamation	2,313	2,672
Disposal Group, Including Discontinued Operation, Liabilities, Current	0	0
Liabilities, Current	55,324	52,768
Debt	28,313	15,214
Royalty obligations		4,292
Reclamation	82,021	75,183
Deferred tax liabilities	5,127	6,179
Other long-term liabilities	3,063	4,750
Intercompany Payable Receivable	317,759	336,813
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent		0
Non-current liabilities	436,283	442,431
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 185,637,724 at December 31, 2017 and 180,933,287 at December 31, 2016	19,630	250
Additional paid-in capital	149,194	181,009
Accumulated deficit	(34,551)	(73,529)
Accumulated other comprehensive income (loss)	(3,463)	(2,488)
Stockholders' equity	130,810	105,242
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	622,417	600,441
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	95,131	10,241
Receivables	11,010	46,538
Ore on leach pads	0	0
Inventory, Net	28,461	44,043
Prepaid expenses and other	4,413	4,753
Disposal Group, Including Discontinued Operation, Assets, Current	91,421	71,442
Current assets	230,436	177,017
Property, plant and equipment, net	89,243	50,316
Mining properties, net	613,288	354,499
Ore on leach pads	0	0
Restricted assets	7,369	7,201
Equity and debt securities	0	0
Receivables	28,750	13,745
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	(18)	0
Other Assets, Noncurrent	2,854	3,500
Disposal Group, Including Discontinued Operation, Assets, Noncurrent		48,763
TOTAL ASSETS	971,922	655,041
Accounts payable	20,451	17,586
Accrued liabilities and other	62,463	9,900
Debt	21,538	5,439
Royalty obligations	0	0
Reclamation	1,464	437
Disposal Group, Including Discontinued Operation, Liabilities, Current	50,677	15,470
Liabilities, Current	156,593	48,832
Debt	323,912	229,036
Royalty obligations		0
Reclamation	35,034	10,409
Deferred tax liabilities	95,911	49,822
Other long-term liabilities	49,323	34,911
Intercompany Payable Receivable	19,680	68,810
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent		33,757
Non-current liabilities	523,860	426,745
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 185,637,724 at December 31, 2017 and 180,933,287 at December 31, 2016	195,020	197,913
Additional paid-in capital	1,885,046	1,864,261
Accumulated deficit	(1,788,597)	(1,882,710)
Accumulated other comprehensive income (loss)	0	0
Stockholders' equity	291,469	179,464
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	971,922	655,041
Eliminations
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	0	0
Receivables	0	0
Ore on leach pads	0	0
Inventory, Net	0	0
Prepaid expenses and other	0	0
Disposal Group, Including Discontinued Operation, Assets, Current	0	0
Current assets	0	0
Property, plant and equipment, net	0	0
Mining properties, net	0	0
Ore on leach pads	0	0
Restricted assets	0	0
Equity and debt securities	0	0
Receivables	0	0
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	(422,279)	(284,706)
Other Assets, Noncurrent	(316,744)	(221,559)
Disposal Group, Including Discontinued Operation, Assets, Noncurrent		0
TOTAL ASSETS	(739,023)	(506,265)
Accounts payable	0	0
Accrued liabilities and other	0	0
Debt	0	0
Royalty obligations	0	0
Reclamation	0	0
Disposal Group, Including Discontinued Operation, Liabilities, Current	0	0
Liabilities, Current	0	0
Debt	(316,744)	(221,559)
Royalty obligations		0
Reclamation	0	0
Deferred tax liabilities	0	0
Other long-term liabilities	0	0
Intercompany Payable Receivable	0	0
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent		0
Non-current liabilities	(316,744)	(221,559)
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 185,637,724 at December 31, 2017 and 180,933,287 at December 31, 2016	(214,650)	(198,163)
Additional paid-in capital	(2,034,240)	(2,045,270)
Accumulated deficit	1,823,148	1,956,239
Accumulated other comprehensive income (loss)	3,463	2,488
Stockholders' equity	(422,279)	(284,706)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ (739,023)	$ (506,265)

Commitments and Contigencies (D

Commitments and Contigencies (Details Textual)	12 Months Ended
	Dec. 31, 2017USD ($)t	Oct. 31, 2017USD ($)	Oct. 02, 2014USD ($)
Palmarejo gold production royalty
Business Acquisition [Line Items]
Production to be sold, percent			50.00%
Price per ounce under agreement			$ 800
Aggregate deposit to be received			$ 22,000,000
Palmarejo Gold Stream Agreement, Deferred Revenue Unamortized Balance	$ 14,900,000
JDS Silver Holdings, Ltd.
Business Acquisition [Line Items]
Silvertip acquisition contingent consideration		$ 50,000,000
Number of milestones	2
JDS Silver Holdings, Ltd. | First Milestone
Business Acquisition [Line Items]
Silvertip acquisition contingent consideration		25,000,000
Sustained minim and milling per day (in tones) | t	1,000
JDS Silver Holdings, Ltd. | Second Milestone
Business Acquisition [Line Items]
Silvertip acquisition contingent consideration		25,000,000
Maximum payment		$ 25,000,000
Tonnes of Resource Added | t	3,700,000
Amount of resource required (in tonnes) | t	300,000
Commitment amount per resource amount reached	$ 5,000,000
Minimum Resource Tonnes Milestone | t	2,500,000

Additional Balance Sheet Det107

Additional Balance Sheet Detail and Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Supplemental Cash Flow Information [Abstract]
Other Significant Noncash Transaction, Value of Consideration Given	$ 34,604	$ 32,243	$ 4,123
Extinguishment of Debt, Amount	0	10,616	53,373
Noncash or Part Noncash Acquisition, Other Assets Acquired	131,833	0	297,821
Interest Paid	21,943	41,919	41,442
Income Taxes Paid	$ 13,000	$ 17,181	$ 1,937

Additional Balance Sheet Det108

Additional Balance Sheet Detail and Supplemental Cash Flow Information (Details 2) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other Liabilities Disclosure [Abstract]
Other Accrued Liabilities	$ 12,323	$ 3,199
Accrued Income Taxes, Current	25,788	3,721
Accrual for Taxes Other than Income Taxes, Current	4,354	2,738
Interest Payable, Current	1,513	5,892
Accrued Salaries, Current	26,559	20,895
Business Combination, Contingent Consideration, Liability, Current	24,393	0
Accrued liabilities and other	$ 94,930	$ 36,445

Summary of Quarterly Financi109

Summary of Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 214,585	$ 159,919	$ 149,540	$ 185,554	$ 139,204	$ 148,762	$ 156,822	$ 127,109	$ 709,598		$ 571,897		$ 561,407
Costs applicable to sales	121,982	101,559	102,229	114,490	84,903	84,594	81,820	84,058	440,260	[1]	335,375	[1]	403,827	[1]
Amortization	44,722	32,401	30,733	38,693	28,625	26,040	35,653	26,210	146,549		116,528		125,953
Exploration	7,454	9,792	7,813	5,252	5,260	3,706	2,233	1,731	30,311		12,930		11,521
Other Cost and Expense, Operating	15,106	12,374	11,110	13,962	10,370	10,439	10,688	16,635
Income (loss) from continuing operations	14,349	(11,728)	(9,995)	18,299	(10,328)	46,123	8,280	(21,640)	10,925		22,435		(287,811)
Income (loss) from discontinued operations.	(6,724)	(4,924)	(960)	364	2,020	23,436	6,217	1,244	(12,244)		32,917		(79,372)
Net income (loss)	7,625	(16,652)	(10,955)	18,663	(8,308)	69,559	14,497	(20,396)	(1,319)		55,352		(367,183)
Cash provided by (used in) operating activities	91,811	37,308	24,103	43,938	21,423	39,201	34,752	1,085	208,456		125,817		113,542
Capital expenditures	$ (47,054)	$ (28,982)	$ (37,107)	$ (23,591)	$ (28,134)	$ (22,626)	$ (21,971)	$ (21,651)	$ (136,734)		$ (94,382)		$ (88,973)
Basic net income (loss) from continuing operations (USD per share)	$ 0.08	$ (0.06)	$ (0.05)	$ 0.10	$ (0.06)	$ 0.29	$ 0.05	$ (0.15)	$ 0.06		$ 0.14		$ (2.22)
Basic net income (loss) from discontinued operations (USD per share)	(0.04)	(0.03)	(0.01)	0	0.01	0.14	0.04	0.01	(0.07)		0.21		(0.61)
Basic (in dollars per share)	0.04	(0.09)	(0.06)	0.10	(0.05)	0.43	0.09	(0.14)	(0.01)		0.35		(2.83)
Diluted net income (loss) from continuing operations (USD per share)	0.04	(0.09)	(0.06)	0.10	(0.05)	0.42	0.09	(0.14)	0.06		0.14		(2.22)
Diluted net income (loss) from discontinued operations (USD per share)	0.08	(0.06)	(0.05)	0.10	(0.06)	0.28	0.05	(0.15)	(0.07)		0.20		(0.61)
Diluted (in dollars per share)	$ (0.04)	$ (0.03)	$ (0.01)	$ 0	$ 0.01	$ 0.14	$ 0.04	$ 0.01	$ (0.01)		$ 0.34		$ (2.83)
[1]	Excludes amortization.