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Note 6 - Business Segments - Identifiable Assets by Reporting Segments (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Identifiable assets: |  |
Identifiable assets | $ 2,398,091 | $ 2,364,957
Greens Creek [Member] |  |
Identifiable assets: |  |
Identifiable assets | 669,042 | 671,960
Lucky Friday [Member] |  |
Identifiable assets: |  |
Identifiable assets | 432,369 | 432,400
Casa Berardi [Member] |  |
Identifiable assets: |  |
Identifiable assets | 802,017 | 804,505
San Sebastian [Member] |  |
Identifiable assets: |  |
Identifiable assets | 67,576 | 62,198
Other Segments [Member] |  |
Identifiable assets: |  |
Identifiable assets | $ 427,087 | $ 393,894

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(11)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(12)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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