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Supplemental Guarantor Information Condensed Consolidated Statements of Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Revenue |  | $ 154,870 |  | $ 163,267
Pre-development, reclamation, and other |  | 4,434 |  | 4,225
Amortization |  | 41,876 |  | 30,777
General and administrative |  | 9,474 |  | 8,804
Loss on debt extinguishments |  |  |  | 0
Fair value adjustments, net |  | 9,120 |  | 4,654
Other, net |  | 60 |  | 513
Interest expense, net of capitalized interest |  | (6,454) |  | (5,965)
Total other income (expense), net |  | 2,726 |  | (798)
Total |  | (33,552) |  | 12,640
Income and mining tax (expense) benefit |  | 8,658 |  | (11,949)
Income (loss) from continuing operations |  | (24,894) |  | 691
Equity income (loss) in consolidated subsidiaries |  | 0 |  | 0
Income (loss) from discontinued operations |  | 5,693 |  | 550
NET INCOME (LOSS) |  | (19,201) |  | 1,241
Unrealized gain (loss) on debt securities, net of tax |  | 59 |  | (278)
Reclassification adjustments for impairment of equity securities, net of tax |  |  |  | 0
Other comprehensive income (loss) |  | 59 |  | (278)
COMPREHENSIVE INCOME (LOSS) |  | (19,142) |  | 963
Operating Expenses |  | 191,148 |  | 149,829
Eliminations |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Revenue |  | 0 |  | 0
Pre-development, reclamation, and other |  | 0 |  | 0
Amortization |  | 0 |  | 0
General and administrative |  | 0 |  | 0
Fair value adjustments, net |  | 0 |  | 0
Other, net |  | (4,303) |  | (3,719)
Interest expense, net of capitalized interest |  | 4,303 |  | 3,719
Total other income (expense), net |  | 0 |  | 0
Total |  | 0 |  | 0
Income and mining tax (expense) benefit |  | 0 |  | 0
Income (loss) from continuing operations |  | 0 |  | 0
Equity income (loss) in consolidated subsidiaries |  | 21,150 |  | (3,956)
Income (loss) from discontinued operations |  | 0 |  | 0
NET INCOME (LOSS) |  | 21,150 |  | (3,956)
Unrealized gain (loss) on debt securities, net of tax |  | 0 |  | 0
Reclassification adjustments for impairment of equity securities, net of tax |  |  |  | 0
COMPREHENSIVE INCOME (LOSS) |  | 21,150 |  | (3,956)
Operating Expenses |  | 0 |  | 0
Coeur Mining, Inc. |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Revenue |  | 0 |  | 0
Pre-development, reclamation, and other |  | 160 |  | 406
Amortization |  | 221 |  | 246
General and administrative |  | 9,474 |  | 8,797
Fair value adjustments, net |  | 9,120 |  | 4,946
Other, net |  | 4,998 |  | 4,475
Interest expense, net of capitalized interest |  | (5,729) |  | (5,083)
Total other income (expense), net |  | 8,389 |  | 4,338
Total |  | (1,802) |  | (5,570)
Income and mining tax (expense) benefit |  | (2,077) |  | 1,638
Income (loss) from continuing operations |  | (3,879) |  | (3,932)
Equity income (loss) in consolidated subsidiaries |  | (21,015) |  | 4,164
Income (loss) from discontinued operations |  | 5,693 |  | 1,009
NET INCOME (LOSS) |  | (19,201) |  | 1,241
Unrealized gain (loss) on debt securities, net of tax |  | 59 |  | (278)
Reclassification adjustments for impairment of equity securities, net of tax |  |  |  | 0
COMPREHENSIVE INCOME (LOSS) |  | (19,142) |  | 963
Operating Expenses |  | 10,191 |  | 9,908
Guarantor Subsidiaries |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Revenue |  | 90,699 |  | 93,230
Pre-development, reclamation, and other |  | 1,943 |  | 1,947
Amortization |  | 18,445 |  | 14,205
General and administrative |  | 0 |  | 3
Fair value adjustments, net |  | 0 |  | (292)
Other, net |  | 165 |  | (137)
Interest expense, net of capitalized interest |  | (392) |  | (353)
Total other income (expense), net |  | (227) |  | (782)
Total |  | (3,062) |  | 5,803
Income and mining tax (expense) benefit |  | (32) |  | (1,120)
Income (loss) from continuing operations |  | (3,094) |  | 4,683
Equity income (loss) in consolidated subsidiaries |  | (418) |  | (38)
Income (loss) from discontinued operations |  | 0 |  | (284)
NET INCOME (LOSS) |  | (3,512) |  | 4,361
Unrealized gain (loss) on debt securities, net of tax |  | 0 |  | 0
Reclassification adjustments for impairment of equity securities, net of tax |  |  |  | 0
COMPREHENSIVE INCOME (LOSS) |  | (3,512) |  | 4,361
Operating Expenses |  | 93,534 |  | 86,645
Non-Guarantor Subsidiaries |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Revenue |  | 64,171 |  | 70,037
Pre-development, reclamation, and other |  | 2,331 |  | 1,872
Amortization |  | 23,210 |  | 16,326
General and administrative |  | 0 |  | 4
Fair value adjustments, net |  | 0 |  | 0
Other, net |  | (800) |  | (106)
Interest expense, net of capitalized interest |  | (4,636) |  | (4,248)
Total other income (expense), net |  | (5,436) |  | (4,354)
Total |  | (28,688) |  | 12,407
Income and mining tax (expense) benefit |  | 10,767 |  | (12,467)
Income (loss) from continuing operations |  | (17,921) |  | (60)
Equity income (loss) in consolidated subsidiaries |  | 283 |  | (170)
Income (loss) from discontinued operations |  | 0 |  | (175)
NET INCOME (LOSS) |  | (17,638) |  | (405)
Unrealized gain (loss) on debt securities, net of tax |  | 0 |  | 0
Reclassification adjustments for impairment of equity securities, net of tax |  |  |  | 0
COMPREHENSIVE INCOME (LOSS) |  | (17,638) |  | (405)
Operating Expenses |  | 87,423 |  | 53,276
Product [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Costs applicable to sales | [1] | 131,650 |  | 99,340
Product [Member] | Eliminations |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Costs applicable to sales | [1] | 0 |  | 0
Product [Member] | Coeur Mining, Inc. |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Costs applicable to sales |  | 0 | [1] | 0
Product [Member] | Guarantor Subsidiaries |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Costs applicable to sales |  | 72,022 | [1] | 68,245
Product [Member] | Non-Guarantor Subsidiaries |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Costs applicable to sales |  | 59,628 | [1] | 31,095
Mineral, Exploration [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Costs applicable to sales |  | 3,714 |  | 6,683
Mineral, Exploration [Member] | Eliminations |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Costs applicable to sales |  | 0 |  | 0
Mineral, Exploration [Member] | Coeur Mining, Inc. |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Costs applicable to sales |  | 336 |  | 459
Mineral, Exploration [Member] | Guarantor Subsidiaries |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Costs applicable to sales |  | 1,124 |  | 2,245
Mineral, Exploration [Member] | Non-Guarantor Subsidiaries |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Costs applicable to sales |  | $ 2,254 |  | $ 3,979
[1] | Excludes amortization.

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