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Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
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Hecla Mining Company Retirement Plan [Member] | Interest-bearing Deposits [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | $ 596 | $ 683
Hecla Mining Company Retirement Plan [Member] | Interest-bearing Deposits [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 596 | 683
Hecla Mining Company Retirement Plan [Member] | Common Stock [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 1,220 | 2,309
Hecla Mining Company Retirement Plan [Member] | Common Stock [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 1,220 | 2,309
Hecla Mining Company Retirement Plan [Member] | Real Estate Investments [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 10,797 | 9,611
Hecla Mining Company Retirement Plan [Member] | Real Estate Investments [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 10,797 | 9,611
Hecla Mining Company Retirement Plan [Member] | Common Collective Funds [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 9,654 | 10,095
Hecla Mining Company Retirement Plan [Member] | Common Collective Funds [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 7,970 | 7,251
Hecla Mining Company Retirement Plan [Member] | Common Collective Funds [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 17,624 | 17,346
Hecla Mining Company Retirement Plan [Member] | Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 23,252 | 24,183
Hecla Mining Company Retirement Plan [Member] | Mutual Funds [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 23,252 | 24,183
Hecla Mining Company Retirement Plan [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 25,068 | 27,175
Hecla Mining Company Retirement Plan [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 9,654 | 10,095
Hecla Mining Company Retirement Plan [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 18,767 | 16,862
Hecla Mining Company Retirement Plan [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 53,489 | 54,132
Lucky Friday Pension Plan [Member] | Interest-bearing Deposits [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 393 | 198
Lucky Friday Pension Plan [Member] | Interest-bearing Deposits [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 393 | 198
Lucky Friday Pension Plan [Member] | Common Stock [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 311 | 588
Lucky Friday Pension Plan [Member] | Common Stock [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 311 | 588
Lucky Friday Pension Plan [Member] | Real Estate Investments [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 2,865 | 2,513
Lucky Friday Pension Plan [Member] | Real Estate Investments [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 2,865 | 2,513
Lucky Friday Pension Plan [Member] | Common Collective Funds [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 2,982 | 2,469
Lucky Friday Pension Plan [Member] | Common Collective Funds [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 2,174 | 1,978
Lucky Friday Pension Plan [Member] | Common Collective Funds [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 5,156 | 4,447
Lucky Friday Pension Plan [Member] | Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 6,837 | 6,637
Lucky Friday Pension Plan [Member] | Mutual Funds [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 6,837 | 6,637
Lucky Friday Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 7,541 | 7,423
Lucky Friday Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 2,982 | 2,469
Lucky Friday Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | 5,039 | 4,491
Lucky Friday Pension Plan [Member] |  |
Note 8 - Employee Benefit Plans (Details) - Fair Value By Asset Category [Line Items] |  |
Assets, fair value | $ 15,562 | $ 14,383

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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