XML 47 R81.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Note 11 - Business Segments and Significant Customers (Details) - Long-lived Assets by Geographic Area (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Note 11 - Business Segments and Significant Customers (Details) - Long-lived Assets by Geographic Area [Line Items] |  |
Long-lived assets | $ 1,831,564 us-gaap_PropertyPlantAndEquipmentNet | $ 1,791,601 us-gaap_PropertyPlantAndEquipmentNet
UNITED STATES |  |
Note 11 - Business Segments and Significant Customers (Details) - Long-lived Assets by Geographic Area [Line Items] |  |
Long-lived assets | 1,081,699 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_US | 1,053,374 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_US
CANADA |  |
Note 11 - Business Segments and Significant Customers (Details) - Long-lived Assets by Geographic Area [Line Items] |  |
Long-lived assets | 749,810 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_CA | 738,172 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_CA
MEXICO |  |
Note 11 - Business Segments and Significant Customers (Details) - Long-lived Assets by Geographic Area [Line Items] |  |
Long-lived assets | $ 55 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_MX | $ 55 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = country_MX

X
- Details
Name: | hl_Note11BusinessSegmentsandSignificantCustomersDetailsLonglivedAssetsbyGeographicAreaLineItems
Namespace Prefix: | hl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 + Details
Name: | us-gaap_PropertyPlantAndEquipmentNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_StatementGeographicalAxis=country_CA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=country_MX
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |