XML 28 R47.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Note 11 - Derivative Instruments (Details) - Summary of Forward Sales Contracts (USD $) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2014 oz | Dec. 31, 2013 oz
Silver [Member] | 2014 Settlements [Member] |  |
Contracts on provisional sales |  |
Ounces Under Contract (in Ounces) | 786,000 | 673,000
Average Price Per Ounce | $ 18.90 | $ 19.50
Average Price Per Pound | 18.90 | 19.50
Contracts on forecasted sales |  |
Average Price Per Pound |  |
Average Price Per Ounce |  |
Silver [Member] | 2015 Settlements [Member] |  |
Contracts on forecasted sales |  |
Average Price Per Pound |  |
Average Price Per Ounce |  |
Silver [Member] | 2016 Settlements [Member] |  |
Contracts on forecasted sales |  |
Average Price Per Pound |  |
Average Price Per Ounce |  |
Silver [Member] | 2017 Settlements [Member] |  |
Contracts on forecasted sales |  |
Average Price Per Pound |  |
Average Price Per Ounce |  |
Gold [Member] | 2014 Settlements [Member] |  |
Contracts on provisional sales |  |
Ounces Under Contract (in Ounces) | 4,000 | 3,000
Average Price Per Ounce | 1,263 | 1,205
Average Price Per Pound | 1,263 | 1,205
Contracts on forecasted sales |  |
Average Price Per Pound |  |
Average Price Per Ounce |  |
Gold [Member] | 2015 Settlements [Member] |  |
Contracts on forecasted sales |  |
Average Price Per Pound |  |
Average Price Per Ounce |  |
Gold [Member] | 2016 Settlements [Member] |  |
Contracts on forecasted sales |  |
Average Price Per Pound |  |
Average Price Per Ounce |  |
Gold [Member] | 2017 Settlements [Member] |  |
Contracts on forecasted sales |  |
Average Price Per Pound |  |
Average Price Per Ounce |  |
Zinc [Member] | 2014 Settlements [Member] |  |
Contracts on provisional sales |  |
Pounds Under Contract (in Pounds) | 12,236,000 | 11,188,000
Average Price Per Ounce | 0.95 | 0.89
Average Price Per Pound | 0.95 | 0.89
Contracts on forecasted sales |  |
Pounds Under Contract (in Pounds) | 19,566,000 | 31,967,000
Average Price Per Pound | 1.01 | 1.00
Average Price Per Ounce | 1.01 | 1.00
Zinc [Member] | 2015 Settlements [Member] |  |
Contracts on forecasted sales |  |
Pounds Under Contract (in Pounds) | 49,604,000 | 39,683,000
Average Price Per Pound | 0.96 | 0.96
Average Price Per Ounce | 0.96 | 0.96
Zinc [Member] | 2016 Settlements [Member] |  |
Contracts on forecasted sales |  |
Pounds Under Contract (in Pounds) | 32,022,000 | 3,803,000
Average Price Per Pound | 0.97 | 0.93
Average Price Per Ounce | 0.97 | 0.93
Zinc [Member] | 2017 Settlements [Member] |  |
Contracts on forecasted sales |  |
Pounds Under Contract (in Pounds) | 661,000 |
Average Price Per Pound | 0.99 |
Average Price Per Ounce | 0.99 |
Lead [Member] | 2014 Settlements [Member] |  |
Contracts on provisional sales |  |
Pounds Under Contract (in Pounds) | 6,449,000 | 3,472,000
Average Price Per Ounce | 0.95 | 1.00
Average Price Per Pound | 0.95 | 1.00
Contracts on forecasted sales |  |
Pounds Under Contract (in Pounds) | 14,330,000 | 34,282,000
Average Price Per Pound | 1.09 | 1.04
Average Price Per Ounce | 1.09 | 1.04
Lead [Member] | 2015 Settlements [Member] |  |
Contracts on forecasted sales |  |
Pounds Under Contract (in Pounds) | 40,179,000 | 36,982,000
Average Price Per Pound | 1.07 | 1.07
Average Price Per Ounce | 1.07 | 1.07
Lead [Member] | 2016 Settlements [Member] |  |
Contracts on forecasted sales |  |
Pounds Under Contract (in Pounds) | 32,132,000 | 30,589,000
Average Price Per Pound | 1.03 | 1.03
Average Price Per Ounce | 1.03 | 1.03
Lead [Member] | 2017 Settlements [Member] |  |
Contracts on forecasted sales |  |
Average Price Per Pound |  |
Average Price Per Ounce |  |

X
- Definition Average settlement price in forward contracts on forecasted sales + References No definition available. + Details
Name: | hl_ContractsOnForcastedSales
Namespace Prefix: | hl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | hl_ContractsOnForecastedSalesAbstract
Namespace Prefix: | hl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Average settlement price in forward contracts on provisional sales + References No definition available. + Details
Name: | hl_ContractsOnProvisionalSales
Namespace Prefix: | hl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | hl_ContractsOnProvisionalSalesAbstract
Namespace Prefix: | hl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Ounces included in open forward contracts on provisional sales + References No definition available. + Details
Name: | hl_OuncesUnderContractionPoundsAndOunces
Namespace Prefix: | hl_
Data Type: | num:weightItemType
Balance Type: | na
Period Type: | instant

X
- Definition Pounds included in open forward contracts on foretasted sales + References No definition available. + Details
Name: | hl_PoundsUnderContractForecastedSales
Namespace Prefix: | hl_
Data Type: | num:weightItemType
Balance Type: | na
Period Type: | instant

X
- Definition Pounds included in open forward contracts on provisional sales + References No definition available. + Details
Name: | hl_PoundsUnderContractProvisionalSales
Namespace Prefix: | hl_
Data Type: | num:weightItemType
Balance Type: | na
Period Type: | instant