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Contingencies (Details) | 12 Months Ended
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Dec. 31, 2015 processingFacility mine
Loss Contingencies [Line Items] |
Loss contingency, number of processing facilities | processingFacility | 3
IDAHO |
Loss Contingencies [Line Items] |
Loss contingency, number of mines | mine | 18

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- Definition Loss contingency, number of processing facilities + References No definition available. + Details
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- Definition Loss contingency, number of mines + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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