XML 41 R48.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Note 13 - Acquisition of Aurizon Mines Ltd. (Details) | 1 Months Ended | 3 Months Ended | 6 Months Ended |  | 1 Months Ended |  | 3 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Apr. 30, 2013 USD ($) | Jun. 30, 2013 USD ($) | Jun. 30, 2013 CAD | Jun. 30, 2013 USD ($) | Mar. 31, 2013 | Mar. 31, 2013 In The Money Stock Options [Member] | Apr. 30, 2013 Asset Retirement Obligation [Member] USD ($) | Apr. 30, 2013 Plant and Equipment [Member] USD ($) | Apr. 30, 2013 Development and Other Mineral Interests [Member] USD ($) | Jun. 30, 2013 Aurizon Mines Ltd [Member] USD ($) | Jun. 30, 2013 Aurizon Mines Ltd [Member] CAD
Note 13 - Acquisition of Aurizon Mines Ltd. (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition Per Share Consideration (in Dollars per share and Dollars per share) |  | $ 3.83 |  | $ 3.83 |  |  |  |  |  | $ 4.32 | 4.47
Business Acquisition, Share Price (in Dollars per share) |  |  |  |  |  |  |  |  |  |  | 4.75
Business Acquisition Per Share Issued (in Shares) |  |  |  |  |  |  |  |  |  | 0.9953 | 0.9953
Potentail Business Acquisition Per Share Price (in Dollars per share) |  |  |  |  |  |  |  |  |  |  | 3.11
Business Acquisition Cost Sensitivity To Change In Share Price |  | $ 3.00 |  |  |  |  |  |  |  |  |
Potentail Business Acquitision Shares Issued (in Shares) |  | 0.3442 | 0.3442 | 0.3442 |  |  |  |  |  |  |
Business Acquisition Shares Outstanding of Entity Acquired (in Shares) |  | 164,838,377 | 164,838,377 | 164,838,377 |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares) |  | 56,997,790 | 56,997,790 |  |  | 747,132 |  |  |  |  |
Business Acquisition Shares Issued And Outstanding of Acquired Entity (in Shares) |  |  |  |  | 165,585,509 |  |  |  |  |  |
Payments to Acquire Businesses, Gross (in Dollars) |  | 496,400,000 | 514,500,000 | 496,211,000 |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  | 496,400,000 | 514,500,000 | 496,211,000 |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable (in Dollars) |  | 218,300,000 | 226,300,000 | 218,302,000 |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable |  | 218,300,000 | 226,300,000 | 218,302,000 |  |  |  |  |  |  |
Business Combination, Consideration Transferred (in Dollars) |  |  | 740,800,000 | 714,513,000 |  |  |  |  |  |  |
Exchange Rate |  | 0.9645% | 0.9645% |  |  |  |  |  |  |  |
Share Price (in Dollars per share and Dollars per share) |  | $ 3.83 | 3.97 | $ 3.83 |  |  |  |  |  |  |
Proceeds from Notes Payable | 490,000,000 |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | $ 715,400,000 | $ 715,391,000 |  | $ 715,391,000 |  |  | $ 11.1 | $ 127,800,000 | $ 576,500,000 |  |

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 Consideration + References No definition available. + Details
Name: | hl_BusinessAcquisitionPerShareConsideration
Namespace Prefix: | hl_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

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
- Details
Name: | hl_Note13AcquisitionofAurizonMinesLtdDetailsLineItems
Namespace Prefix: | hl_
Data Type: | xbrli:stringItemType
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 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 Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
Name: | us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination. + 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 Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of property, plant, and equipment recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=25498275&loc=d3e2207-128464 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow from a borrowing supported by a written promise to pay an obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromNotesPayable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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=25499696&loc=d3e19207-110258 + Details
Name: | us-gaap_SharePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant