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Note 16 - Acquisitions - Preliminary Purchase Price Allocation (Details) - USD ($) $ in Thousands |  |  | 1 Months Ended |
--- | --- | --- | --- | ---
Jul. 20, 2018 | Sep. 13, 2016 | Jun. 30, 2015 | Dec. 31, 2018
Klondex Mines Ltd [Member] |  |  |  |
Payments to Acquire Businesses, Gross | $ 161,704 |  |  |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable | 242,389 |  |  |
Hecla warrants issued | 10,155 |  |  |
Total consideration | 414,248 |  |  |
Cash | 12,874 |  |  |
Accounts receivable | 3,453 |  |  |
Inventory - supplies | 6,564 |  |  |
Inventory - finished goods, in-process material and stockpiled ore | 10,302 |  |  |
Other current assets | 2,583 |  |  |
Properties, plants, equipment and mineral interests | 521,495 |  |  | $ 19,200
Non-current investments | 1,596 |  |  |
Non-current restricted cash and investments | 9,504 |  |  |
Total assets | 568,371 |  |  |
Accounts payable and accrued liabilities | 17,270 |  |  |
Accrued payroll and related benefits | 10,352 |  |  |
Accrued taxes | 421 |  |  |
Lease liability | 2,080 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt | 35,086 |  |  |
Asset retirement obligation | 19,571 |  |  |
Deferred tax liability | 69,343 |  |  |
Total liabilities | 154,123 |  |  |
Net assets | 414,248 |  |  |
Hecla stock issued (8,309,006 shares at $5.79 per share) | 242,389 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment, Total | $ 521,495 |  |  | $ 19,200
Revett Mining Company, Inc. [Member] |  |  |  |
Payments to Acquire Businesses, Gross |  | $ 4,025 | $ 4,000 |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable |  | 48,109 | 48,100 |
Total consideration |  | 52,134 |  |
Cash |  | 94 |  |
Properties, plants, equipment and mineral interests |  | 74,320 | 74,300 |
Total assets |  | 75,928 |  |
Accounts payable and accrued liabilities |  | 2,357 |  |
Total liabilities |  | 23,794 |  |
Net assets |  | 52,134 |  |
Hecla stock issued (8,309,006 shares at $5.79 per share) |  | 48,109 | 48,100 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment, Total |  | 74,320 | $ 74,300 |
Restricted cash |  | 1,185 |  |
Other assets |  | 329 |  |
Deferred tax liability |  | 20,313 |  |
Non-current reclamation liability |  | $ 1,124 |  |

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- Definition The amount of inventory, in-process material and stockpiled ore recognized as of the acquisition date. + References No definition available. + Details
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6578-128477 + Details
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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition Amount of long-term debt due within one year or within the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e31917-109318 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition Amount of deferred tax liability attributable to taxable temporary difference assumed at the acquisition date that are classified as noncurrent. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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