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Note 13 - Acquisition of Klondex Mines Ltd. - Preliminary Purchase Price Allocation (Details) - Klondex Mines Ltd [Member] - USD ($) $ in Thousands | Jul. 20, 2018 | Sep. 30, 2019
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Payments to Acquire Businesses, Gross | $ 161,704 |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable | 242,389 |
Hecla warrants issued | 9,830 |
Total consideration | 413,923 |
Cash | 12,874 |
Accounts receivable | 3,453 |
Inventory - supplies | 6,565 |
Inventory - finished goods, in-process material and stockpiled ore | 10,075 |
Other current assets | 2,583 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment, Total | 510,015 | $ 524,800
Non-current investments | 1,596 |
Non-current restricted cash and investments | 9,504 |
Total assets | 556,665 |
Accounts payable and accrued liabilities | 17,799 |
Accrued payroll and related benefits | 8,245 |
Accrued taxes | 421 |
Lease liability | 2,080 |
Debt | 35,086 |
Asset retirement obligation | 19,571 |
Deferred tax liability | 59,540 |
Total liabilities | 142,742 |
Net assets | $ 413,923 |

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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=116869197&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/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
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