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Note 6. Business Segments (Detail) - Information About Reportable Segments (USD $) In Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 | Sep. 30, 2010
Net sales from operations to customers: |  |  |  |
Net sales from operations to customers | $ 120,543 | $ 115,847 | $ 374,767 | $ 284,353
Income (loss) from operations: |  |  |  |
Income (loss) from operations | 43,489 | 41,501 | 166,015 | 81,747
Greens Creek [Member] |  |  |  |
Net sales from operations to customers: |  |  |  |
Net sales from operations to customers | 77,031 | 88,843 | 260,650 | 212,326
Income (loss) from operations: |  |  |  |
Income (loss) from operations | 37,098 | 39,493 | 140,661 | 83,279
Lucky Friday [Member] |  |  |  |
Net sales from operations to customers: |  |  |  |
Net sales from operations to customers | 43,512 | 27,004 | 114,117 | 72,027
Income (loss) from operations: |  |  |  |
Income (loss) from operations | 27,662 | 12,550 | 68,170 | 30,856
Other Segment Income(Loss) [Member] |  |  |  |
Income (loss) from operations: |  |  |  |
Income (loss) from operations | $ (21,271) | $ (10,542) | $ (42,816) | $ (32,388)

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- Definition This element represents the income or loss from continuing operations attributable to the parent which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 29 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6921628&loc=SL4613673-111683 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph b(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.13) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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