XML 76 R45.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Note 4 - Environmental and Reclamation Activities (Details) - Liabilities Accrued for Reclamation and Closure Costs (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Note 4 - Environmental and Reclamation Activities (Details) - Liabilities Accrued for Reclamation and Closure Costs [Line Items] |  |
Operating and Non Operating Properties | $ 105,191 | $ 113,215
Reclamation and closure costs, current | (58,425) | (19,845)
Reclamation and closure costs, long-term | 46,766 | 93,370
Operating Properties [Member] | Greens Creek [Member] |  |
Note 4 - Environmental and Reclamation Activities (Details) - Liabilities Accrued for Reclamation and Closure Costs [Line Items] |  |
Operating and Non Operating Properties | 34,530 | 32,856
Operating Properties [Member] | Lucky Friday [Member] |  |
Note 4 - Environmental and Reclamation Activities (Details) - Liabilities Accrued for Reclamation and Closure Costs [Line Items] |  |
Operating and Non Operating Properties | 919 | 1,469
Operating Properties [Member] | Casa Berardi [Member] |  |
Note 4 - Environmental and Reclamation Activities (Details) - Liabilities Accrued for Reclamation and Closure Costs [Line Items] |  |
Operating and Non Operating Properties | 7,795 |
Non Operating Properties [Member] | San Sebastian [Member] |  |
Note 4 - Environmental and Reclamation Activities (Details) - Liabilities Accrued for Reclamation and Closure Costs [Line Items] |  |
Operating and Non Operating Properties | 200 | 200
Non Operating Properties [Member] | Grouse Creek [Member] |  |
Note 4 - Environmental and Reclamation Activities (Details) - Liabilities Accrued for Reclamation and Closure Costs [Line Items] |  |
Operating and Non Operating Properties | 1,000 | 2,484
Non Operating Properties [Member] | Coeurd Alene Basin [Member] |  |
Note 4 - Environmental and Reclamation Activities (Details) - Liabilities Accrued for Reclamation and Closure Costs [Line Items] |  |
Operating and Non Operating Properties | 55,499 | 70,786
Non Operating Properties [Member] | Republic [Member] |  |
Note 4 - Environmental and Reclamation Activities (Details) - Liabilities Accrued for Reclamation and Closure Costs [Line Items] |  |
Operating and Non Operating Properties | 3,023 | 3,538
Non Operating Properties [Member] | All Other Sites [Member] |  |
Note 4 - Environmental and Reclamation Activities (Details) - Liabilities Accrued for Reclamation and Closure Costs [Line Items] |  |
Operating and Non Operating Properties | $ 2,225 | $ 1,882

X
- Definition Net change during the period in reclamation and closure costs accrued at period end. + References No definition available. + Details
Name: | hl_AccruedReclamationAndClosureCosts
Namespace Prefix: | hl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | hl_Note4EnvironmentalandReclamationActivitiesDetailsLiabilitiesAccruedforReclamationandClosureCostsLineItems
Namespace Prefix: | hl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reclamation and closure costs current. + References No definition available. + Details
Name: | hl_ReclamationAndClosureCostsCurrent
Namespace Prefix: | hl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Reclamation and closure costs long term. + References No definition available. + Details
Name: | hl_ReclamationAndClosureCostsLongterm
Namespace Prefix: | hl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration