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Note 13 - Acquisition of Aurizon Mines Ltd. (Tables) | 9 Months Ended
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Sep. 30, 2013
Business Combinations [Abstract] |
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] |
Consideration: |  |  |  |
Cash payments |  | $ | 496,211 |
Hecla stock issued (56,997,790 shares at $3.83 per share) |  |  | 218,302 |
Total consideration |  | $ | 714,513 |
Fair value of net assets acquired: |  |  |  |
Assets: |  |  |  |
Cash |  | $ | 177,587 |
Accounts receivable |  |  | 14,307 |
Inventory - bullion and stockpiled ore |  |  | 8,090 |
Inventory - supplies |  |  | 5,704 |
Other current assets |  |  | 7,036 |
Properties, plants, equipment and mineral interests, net |  |  | 715,391 |
Non-current restricted cash and investments |  |  | 4,471 |
Other non-current assets |  |  | 795 |
Total assets |  |  | 933,381 |
Liabilities: |  |  |  |
Accounts payable |  |  | 22,227 |
Accrued payroll and related benefits |  |  | 7,613 |
Accrued taxes |  |  | 509 |
Non-current deferred tax liability |  |  | 177,016 |
Non-current reclamation |  |  | 11,113 |
Other non-current liabilities |  |  | 390 |
Total liabilities |  |  | 218,868 |
Net assets |  | $ | 714,513 |
Business Acquisition, Pro Forma Information [Table Text Block] |
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
(in thousands, except per share amounts) |  | 2013 |  | 2012 |  | 2013 |  | 2012
Sales of products |  | $ | 106,629 |  |  | $ | 131,903 |  |  | $ | 344,575 |  |  | $ | 406,963 |
Net income (loss) |  | (8,458 | ) |  | (3,348 | ) |  | (6,631 | ) |  | 18,661 |
Income (loss) applicable to common shareholders |  | (8,596 | ) |  | (3,486 | ) |  | (7,045 | ) |  | 18,247 |
Basic and diluted income (loss) per common share |  | (0.03 | ) |  | (0.01 | ) |  | (0.02 | ) |  | 0.05 |

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- Definition Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition Tabular disclosure of the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed. May include but not limited to the following: (a) acquired receivables; (b) contingencies recognized at the acquisition date; and (c) the fair value of noncontrolling interests in the acquiree. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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