XML 79 R96.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Note 16 - Guarantor Subsidiaries (Details) - Condensed Consolidating Statements of Operations (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Condensed Income Statements, Captions [Line Items] |  |  |
Revenues | $ 500,781 us-gaap_SalesRevenueGoodsGross | $ 382,589 us-gaap_SalesRevenueGoodsGross | $ 321,143 us-gaap_SalesRevenueGoodsGross
Cost of sales | (304,446)us-gaap_CostOfGoodsSold | (235,316)us-gaap_CostOfGoodsSold | (134,105)us-gaap_CostOfGoodsSold
Depreciation, depletion, amortization | (111,134)us-gaap_CostOfGoodsSoldDepreciationAndAmortization | (81,127)us-gaap_CostOfGoodsSoldDepreciationAndAmortization | (43,522)us-gaap_CostOfGoodsSoldDepreciationAndAmortization
General and administrative | (31,538)us-gaap_GeneralAndAdministrativeExpense | (28,925)us-gaap_GeneralAndAdministrativeExpense | (21,253)us-gaap_GeneralAndAdministrativeExpense
Gain/(loss) on derivative contracts | 9,134 us-gaap_GainLossOnSaleOfDerivatives | 17,979 us-gaap_GainLossOnSaleOfDerivatives | (10,457)us-gaap_GainLossOnSaleOfDerivatives
Income (loss) before income taxes | 12,584 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | (34,925)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 23,833 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
(Provision) benefit from income taxes | 5,240 us-gaap_IncomeTaxExpenseBenefit | 9,795 us-gaap_IncomeTaxExpenseBenefit | (8,879)us-gaap_IncomeTaxExpenseBenefit
Net income (loss) | 17,824 us-gaap_NetIncomeLoss | (25,130)us-gaap_NetIncomeLoss | 14,954 us-gaap_NetIncomeLoss
Comprehensive income (loss) | 12,092 us-gaap_ComprehensiveIncomeNetOfTax | (27,511)us-gaap_ComprehensiveIncomeNetOfTax | 14,534 us-gaap_ComprehensiveIncomeNetOfTax
Preferred stock dividends | (552)us-gaap_DividendsPreferredStock | (552)us-gaap_DividendsPreferredStock | (552)us-gaap_DividendsPreferredStock
Income (loss) applicable to common stockholders | 17,272 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | (25,682)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 14,402 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Consolidation, Eliminations [Member] |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |
Equity in earnings (loss) of subsidiaries | (72,407)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | 15,807 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (21,246)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
Other (expense) income | (16,295)us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (16,922)us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (20,921)us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
Income (loss) before income taxes | (88,702)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (1,115)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (42,167)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
(Provision) benefit from income taxes | 16,295 us-gaap_IncomeTaxExpenseBenefit / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | 16,922 us-gaap_IncomeTaxExpenseBenefit / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | 20,923 us-gaap_IncomeTaxExpenseBenefit / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
Net income (loss) | (72,407)us-gaap_NetIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | 15,807 us-gaap_NetIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (21,244)us-gaap_NetIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
Changes in comprehensive income (loss) | 177 hl_ChangesInComprehensiveIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | 4,594 hl_ChangesInComprehensiveIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (527)hl_ChangesInComprehensiveIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
Comprehensive income (loss) | (72,230)us-gaap_ComprehensiveIncomeNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | 20,401 us-gaap_ComprehensiveIncomeNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (21,771)us-gaap_ComprehensiveIncomeNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
Income (loss) applicable to common stockholders | (72,407)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | 15,807 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember | (21,244)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
Consolidated [Member] |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |
Revenues | 500,781 us-gaap_SalesRevenueGoodsGross / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | 382,589 us-gaap_SalesRevenueGoodsGross / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | 321,143 us-gaap_SalesRevenueGoodsGross / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember
Cost of sales | (304,446)us-gaap_CostOfGoodsSold / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (235,316)us-gaap_CostOfGoodsSold / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (134,105)us-gaap_CostOfGoodsSold / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember
Depreciation, depletion, amortization | (111,134)us-gaap_CostOfGoodsSoldDepreciationAndAmortization / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (81,127)us-gaap_CostOfGoodsSoldDepreciationAndAmortization / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (43,522)us-gaap_CostOfGoodsSoldDepreciationAndAmortization / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember
General and administrative | (31,538)us-gaap_GeneralAndAdministrativeExpense / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (28,925)us-gaap_GeneralAndAdministrativeExpense / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (21,253)us-gaap_GeneralAndAdministrativeExpense / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember
Exploration and pre-development | (19,667)us-gaap_ExplorationExpenseMining / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (37,650)us-gaap_ExplorationExpenseMining / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (49,738)us-gaap_ExplorationExpenseMining / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember
Gain/(loss) on derivative contracts | 9,134 us-gaap_GainLossOnSaleOfDerivatives / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | 17,979 us-gaap_GainLossOnSaleOfDerivatives / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (10,457)us-gaap_GainLossOnSaleOfDerivatives / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember
Closed operations |  | (26,397)us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (4,652)us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember
Other (expense) income | (30,546)us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (26,078)us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (33,583)us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember
Income (loss) before income taxes | 12,584 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (34,925)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | 23,833 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember
(Provision) benefit from income taxes | 5,240 us-gaap_IncomeTaxExpenseBenefit / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | 9,795 us-gaap_IncomeTaxExpenseBenefit / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (8,879)us-gaap_IncomeTaxExpenseBenefit / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember
Net income (loss) | 17,824 us-gaap_NetIncomeLoss / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (25,130)us-gaap_NetIncomeLoss / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | 14,954 us-gaap_NetIncomeLoss / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember
Changes in comprehensive income (loss) | (5,732)hl_ChangesInComprehensiveIncomeLoss / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (2,381)hl_ChangesInComprehensiveIncomeLoss / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (420)hl_ChangesInComprehensiveIncomeLoss / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember
Comprehensive income (loss) | 12,092 us-gaap_ComprehensiveIncomeNetOfTax / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (27,511)us-gaap_ComprehensiveIncomeNetOfTax / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | 14,534 us-gaap_ComprehensiveIncomeNetOfTax / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember
Preferred stock dividends | (552)us-gaap_DividendsPreferredStock / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (552)us-gaap_DividendsPreferredStock / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (552)us-gaap_DividendsPreferredStock / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember
Income (loss) applicable to common stockholders | 17,272 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | (25,682)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember | 14,402 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / us-gaap_ConsolidationItemsAxis = hl_ConsolidatedMember
Parent Company [Member] |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |
Revenues | 1,473 us-gaap_SalesRevenueGoodsGross / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 3,044 us-gaap_SalesRevenueGoodsGross / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (1,346)us-gaap_SalesRevenueGoodsGross / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
General and administrative | (17,667)us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (14,441)us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (11,519)us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Exploration and pre-development | (252)us-gaap_ExplorationExpenseMining / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (576)us-gaap_ExplorationExpenseMining / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (1,262)us-gaap_ExplorationExpenseMining / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Gain/(loss) on derivative contracts | 9,134 us-gaap_GainLossOnSaleOfDerivatives / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 17,979 us-gaap_GainLossOnSaleOfDerivatives / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (10,457)us-gaap_GainLossOnSaleOfDerivatives / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Closed operations |  | (14,444)us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Equity in earnings (loss) of subsidiaries | 72,407 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (15,807)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 21,246 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Other (expense) income | (47,271)us-gaap_OtherOperatingIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (885)us-gaap_OtherOperatingIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 18,292 us-gaap_OtherOperatingIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Income (loss) before income taxes | 17,824 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (25,130)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 14,954 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net income (loss) | 17,824 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (25,130)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 14,954 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Changes in comprehensive income (loss) | (5,732)hl_ChangesInComprehensiveIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (2,381)hl_ChangesInComprehensiveIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (420)hl_ChangesInComprehensiveIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Comprehensive income (loss) | 12,092 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (27,511)us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 14,534 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Preferred stock dividends | (552)us-gaap_DividendsPreferredStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (552)us-gaap_DividendsPreferredStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (552)us-gaap_DividendsPreferredStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Income (loss) applicable to common stockholders | 17,272 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (25,682)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 14,402 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Guarantor Subsidiaries [Member] |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |
Revenues | 333,460 us-gaap_SalesRevenueGoodsGross / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 304,423 us-gaap_SalesRevenueGoodsGross / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 322,489 us-gaap_SalesRevenueGoodsGross / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Cost of sales | (194,600)us-gaap_CostOfGoodsSold / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (179,491)us-gaap_CostOfGoodsSold / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (134,105)us-gaap_CostOfGoodsSold / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Depreciation, depletion, amortization | (72,937)us-gaap_CostOfGoodsSoldDepreciationAndAmortization / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (63,097)us-gaap_CostOfGoodsSoldDepreciationAndAmortization / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (43,522)us-gaap_CostOfGoodsSoldDepreciationAndAmortization / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
General and administrative | (12,694)us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (13,174)us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (9,519)us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Exploration and pre-development | (7,088)us-gaap_ExplorationExpenseMining / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (24,990)us-gaap_ExplorationExpenseMining / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (38,700)us-gaap_ExplorationExpenseMining / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Closed operations |  |  | (2,259)us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Other (expense) income | 29,753 us-gaap_OtherOperatingIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 1,345 us-gaap_OtherOperatingIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (27,747)us-gaap_OtherOperatingIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Income (loss) before income taxes | 75,894 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 25,016 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 66,637 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
(Provision) benefit from income taxes | (10,565)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (14,171)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (29,802)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Net income (loss) | 65,329 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 10,845 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 36,835 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Changes in comprehensive income (loss) | (1,329)hl_ChangesInComprehensiveIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (7)hl_ChangesInComprehensiveIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | (911)hl_ChangesInComprehensiveIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Comprehensive income (loss) | 64,000 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 10,838 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 35,924 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Income (loss) applicable to common stockholders | 65,329 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 10,845 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 36,835 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Non-Guarantor Subsidiaries [Member] |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |
Revenues | 165,848 us-gaap_SalesRevenueGoodsGross / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 75,122 us-gaap_SalesRevenueGoodsGross / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
Cost of sales | (109,846)us-gaap_CostOfGoodsSold / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (55,825)us-gaap_CostOfGoodsSold / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
Depreciation, depletion, amortization | (38,197)us-gaap_CostOfGoodsSoldDepreciationAndAmortization / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (18,030)us-gaap_CostOfGoodsSoldDepreciationAndAmortization / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
General and administrative | (1,177)us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (1,310)us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (215)us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Exploration and pre-development | (12,327)us-gaap_ExplorationExpenseMining / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (12,084)us-gaap_ExplorationExpenseMining / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (9,776)us-gaap_ExplorationExpenseMining / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Closed operations |  | (11,953)us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (2,393)us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Other (expense) income | 3,267 us-gaap_OtherOperatingIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (9,616)us-gaap_OtherOperatingIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (3,207)us-gaap_OtherOperatingIncomeExpenseNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Income (loss) before income taxes | 7,568 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (33,696)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (15,591)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
(Provision) benefit from income taxes | (490)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 7,044 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |
Net income (loss) | 7,078 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (26,652)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (15,591)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Changes in comprehensive income (loss) | 1,152 hl_ChangesInComprehensiveIncomeLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (4,587)hl_ChangesInComprehensiveIncomeLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 1,438 hl_ChangesInComprehensiveIncomeLoss / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Comprehensive income (loss) | 8,230 us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (31,239)us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | (14,153)us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Income (loss) applicable to common stockholders | $ 7,078 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | $ (26,652)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | $ (15,591)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember

X
- Definition Changes in comprehensive income (loss). + References No definition available. + Details
Name: | hl_ChangesInComprehensiveIncomeLoss
Namespace Prefix: | hl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=6519514 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Comprehensive Income -URI http://asc.fasb.org/extlink&oid=35737396 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e557-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=6518256 + Details
Name: | us-gaap_ComprehensiveIncomeNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_CondensedIncomeStatementsCaptionsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total costs related to goods produced and sold during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 2 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_CostOfGoodsSold
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Depreciation of property, plant and equipment directly related to goods produced and sold during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_CostOfGoodsSoldDepreciationAndAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of gross profit attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b),(c) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
Name: | us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817 + Details
Name: | us-gaap_DividendsPreferredStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Exploration expenses (including prospecting) related to the mining industry would be included in operating expenses. Exploration costs include costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of mineral reserves. + References No definition available. + Details
Name: | us-gaap_ExplorationExpenseMining
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(h)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
Name: | us-gaap_GainLossOnSaleOfDerivatives
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
Name: | us-gaap_GeneralAndAdministrativeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.12) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 7 + Details
Name: | us-gaap_IncomeLossFromEquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
Name: | us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=6519514 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=6518256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.19) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.18) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.22) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 + Details
Name: | us-gaap_NetIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1377-109256 + Details
Name: | us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The net amount of other operating income and expenses, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operations. + References No definition available. + Details
Name: | us-gaap_OtherOperatingIncomeExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Aggregate revenue during the period from sale of goods in the normal course of business, before deducting returns, allowances and discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(a)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
Name: | us-gaap_SalesRevenueGoodsGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=us-gaap_GuarantorSubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=us-gaap_NonGuarantorSubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=us-gaap_ParentCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=hl_ConsolidatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_ConsolidationEliminationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |