XML 113 R83.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Investments (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2016
Investment in Marketable Securities (Textual) [Abstract] |  |  |  |
Impairment of equity securities | $ 703 | $ 2,346 | $ 6,593 |
Equity Securities [Member] |  |  |  |
Available-for-sale Securities |  |  |  |
Cost |  | 3,386 |  | $ 3,107
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax |  | (1,179) |  | 0
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax |  | 559 |  | 1,381
Available-for-sale Securities, Estimated Fair Value | $ 4,488 | 2,766 |  |
Paramount Gold Nevada Corp. [Member] | Equity Securities [Member] |  |  |  |
Available-for-sale Securities |  |  |  |
Cost |  | 1,470 |  |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax |  | (1,036) |  |
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax |  | 0 |  |
Available-for-sale Securities, Estimated Fair Value |  | 434 |  |
Northair Silver Corp. [Member] | Equity Securities [Member] |  |  |  |
Available-for-sale Securities |  |  |  |
Cost |  | 725 |  |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax |  | 0 |  |
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax |  | 9 |  |
Available-for-sale Securities, Estimated Fair Value |  | 734 |  |
Agnico- Eagle Mines Ltd. [Member] | Equity Securities [Member] |  |  |  |
Available-for-sale Securities |  |  |  |
Cost |  | 420 |  |
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax |  | 0 |  |
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax |  | 518 |  |
Available-for-sale Securities, Estimated Fair Value |  | 938 |  |
Kootenay Silver, Inc. [Member] | Equity Securities [Member] |  |  |  |
Available-for-sale Securities |  |  |  |
Cost |  |  |  | 2,645
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax |  |  |  | 0
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax |  |  |  | 0
Available-for-sale Securities, Estimated Fair Value |  |  |  | 2,645
Silver Bull Resources, Inc. [Member] | Equity Securities [Member] |  |  |  |
Available-for-sale Securities |  |  |  |
Cost |  | 305 |  | 233
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax |  | 0 |  | 0
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax |  | 0 |  | 783
Available-for-sale Securities, Estimated Fair Value |  | 305 |  | 1,016
Other Investments [Member] | Equity Securities [Member] |  |  |  |
Available-for-sale Securities |  |  |  |
Cost |  | 466 |  | 229
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax |  | (143) |  | 0
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax |  | 32 |  | 598
Available-for-sale Securities, Estimated Fair Value |  | $ 355 |  | $ 827

X
- Definition Investments in marketable securities. + References No definition available. + Details
Name: | cde_InvestmentInMarketableSecuritiesTextualAbstract
Namespace Prefix: | cde_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in equity securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in equity securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=51813488&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26610-111562 + Details
Name: | us-gaap_AvailableForSaleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_AvailableForSaleSecuritiesAmortizedCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesBalanceSheetReportedAmountsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 35 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e25351-111560 + Details
Name: | us-gaap_ImpairmentOfInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=cde_ParamountGoldNevadaCorp.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=cde_NorthairSilverCorp.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=cde_AgnicoEagleMinesLtd.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=cde_KootenaySilverInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=cde_SilverBullResourcesInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=us-gaap_OtherInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |