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Note 7 - Business Segments and Sales of Products - Identifiable Assets by Reporting Segments (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Identifiable assets | $ 2,710,258 | $ 2,345,158
Greens Creek [Member] |  |
Identifiable assets | 651,814 | 671,960
Lucky Friday [Member] |  |
Identifiable assets | 429,334 | 432,400
Casa Berardi [Member] |  |
Identifiable assets | 758,415 | 784,706
San Sebastian [Member] |  |
Identifiable assets | 47,352 | 62,198
Nevada Operations [Member] |  |
Identifiable assets | 539,410 |
Other Segments [Member] |  |
Identifiable assets | $ 283,933 | $ 393,894

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