XML 24 R47.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Note 13 - Acquisition of Aurizon Mines Ltd. (Detail) In Millions, except Share data, unless otherwise specified | 0 Months Ended | 1 Months Ended
--- | --- | ---
May 07, 2013 USD ($) | May 07, 2013 CAD | Mar. 31, 2013 CAD | Mar. 31, 2013 In The Money Stock Options [Member]
Business Acquisition, Share Price (in Dollars per share) |  |  | 4.75 |
Business Acquisition Per Share Issued |  |  | 0.9953 |
Business Acquisition, Cost of Acquired Entity, Cash Paid (in Dollars) |  |  | 513.6 |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares |  |  | 57,000,000 | 747,132
Potentail Business Acquisition Per Share Price (in Dollars per share) |  |  | 3.11 |
Potentail Business Acquitision Shares Issued |  |  | 0.34462 |
Business Acquisition Shares Outstanding of Entity Acquired |  |  | 164,838,377 |
Business Acquisition Shares Issued And Outstanding of Acquired Entity |  |  | 165,585,509 |
Share Price (in Dollars per share) |  |  | 3.29 |
Exchange Rate |  |  | 0.9923% |
Business Acquisition, Cost of Acquired Entity, Purchase Price (in Dollars and Dollars) | 695.5 | 700.9 | 513.6 |
Business Acquisition Cost Sensitivity To Change In Share Price (in Dollars and Dollars) | $ 18.6 | 18.7 |  |

X
- Definition Business acquisition cost sensitivity to change in share price. + References No definition available. + Details
Name: | hl_BusinessAcquisitionCostSensitivityToChangeInSharePrice
Namespace Prefix: | hl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Business Acquisition Per Share Issued + References No definition available. + Details
Name: | hl_BusinessAcquisitionPerShareIssued
Namespace Prefix: | hl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | hl_BusinessAcquisitionSharesIssuedAndOutstandingOfAcquiredEntity
Namespace Prefix: | hl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | hl_BusinessAcquisitionSharesOutstandingOfEntityAcquired
Namespace Prefix: | hl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | hl_ExchangeRate
Namespace Prefix: | hl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | hl_PotentailBusinessAcquisitionPerSharePrice
Namespace Prefix: | hl_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | hl_PotentailBusinessAcquitisionSharesIssued
Namespace Prefix: | hl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of cash paid to acquire the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph f(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_BusinessAcquisitionCostOfAcquiredEntityCashPaid
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_BusinessAcquisitionCostOfAcquiredEntityPurchasePrice
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of shares of equity interests issued or issuable to acquire entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition For an acquired entity, price of a single share of a number of saleable stocks of a company. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionSharePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Price of a single share of a number of saleable stocks of a company. + 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 (e) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_SharePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant