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Other Expense, Income and Non-Operating Other Income, Net - Schedule of Other Income and Non-Operating Other Income, Net (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Other expense: |  |  |
Realized and unrealized losses on contractual obligations associated with carbon credits | $ 2,799 lxu_RealizedAndUnrealizedLossOnContractualObligationsAssociatedWithCarbonCredits | $ 1,233 lxu_RealizedAndUnrealizedLossOnContractualObligationsAssociatedWithCarbonCredits | $ 721 lxu_RealizedAndUnrealizedLossOnContractualObligationsAssociatedWithCarbonCredits
Losses on sales and disposals of property and equipment | 1,312 us-gaap_GainLossOnSaleOfPropertyPlantEquipment | 737 us-gaap_GainLossOnSaleOfPropertyPlantEquipment | 996 us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Dismantle and demolition expense | 559 lxu_DismantleAndDemolitionExpense | 2,578 lxu_DismantleAndDemolitionExpense |
Miscellaneous penalties | 18 lxu_MiscellaneousPenaltyExpenseOperating | 824 lxu_MiscellaneousPenaltyExpenseOperating | 112 lxu_MiscellaneousPenaltyExpenseOperating
Miscellaneous expense | 197 lxu_MiscellaneousExpenseOperating | 302 lxu_MiscellaneousExpenseOperating | 289 lxu_MiscellaneousExpenseOperating
Total other expense | 4,885 us-gaap_OtherCostAndExpenseOperating | 5,674 us-gaap_OtherCostAndExpenseOperating | 2,118 us-gaap_OtherCostAndExpenseOperating
Other income: |  |  |
Realized and unrealized gains on carbon credits | 3,089 lxu_RealizedAndUnrealizedGainOnCarbonCredits | 1,233 lxu_RealizedAndUnrealizedGainOnCarbonCredits | 876 lxu_RealizedAndUnrealizedGainOnCarbonCredits
Settlements of litigation and potential litigation |  | 545 us-gaap_LitigationSettlementAmount | 2,303 us-gaap_LitigationSettlementAmount
Miscellaneous income | 676 lxu_MiscellaneousIncomeOperating | 545 lxu_MiscellaneousIncomeOperating | 632 lxu_MiscellaneousIncomeOperating
Total other income | 3,765 us-gaap_OtherIncome | 2,323 us-gaap_OtherIncome | 3,811 us-gaap_OtherIncome
Other expense (income), net | 1,120 lxu_OtherIncomeExpenseNet | 3,351 lxu_OtherIncomeExpenseNet | (1,693)lxu_OtherIncomeExpenseNet
Non-operating other expense (income), net: |  |  |
Interest income | (301)us-gaap_InvestmentIncomeInterest | (165)us-gaap_InvestmentIncomeInterest | (87)us-gaap_InvestmentIncomeInterest
Miscellaneous income |  | (1)lxu_MiscellaneousIncomeNonOperating | (263)lxu_MiscellaneousIncomeNonOperating
Miscellaneous expense | 20 lxu_MiscellaneousExpenseNonOperating | 66 lxu_MiscellaneousExpenseNonOperating | 69 lxu_MiscellaneousExpenseNonOperating
Total non-operating other income, net | $ (281)us-gaap_OtherNonoperatingIncomeExpense | $ (100)us-gaap_OtherNonoperatingIncomeExpense | $ (281)us-gaap_OtherNonoperatingIncomeExpense

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- Definition Expenses charged against earnings during the period relating to dismantle and demolition activities. + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

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- Definition Miscellaneous non-operating expense items resulting from ancillary business-related activities. + References No definition available. + Details
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- Definition Miscellaneous operating cost and expense items that are associated with the entity's normal revenue producing operation. + References No definition available. + Details
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- Definition Miscellaneous non-operating income items resulting from ancillary business-related activities. + References No definition available. + Details
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- Definition Miscellaneous operating income items that are associated with the entity's normal revenue producing operations. + References No definition available. + Details
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- Definition The amount of miscellaneous penalties recognized in the period associated with the entities revenue producing operations. + References No definition available. + Details
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- Definition The net total of all other revenue and income recognized in the current period and other operating cost and expenses of the entity's revenue producing operation not otherwise specified in the income statement + References No definition available. + Details
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- Details
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- Definition Gains recognized (realized and/or unrealized) from sales of carbon credits occurring during the reporting period. + References No definition available. + Details
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- Definition Losses incurred (realized and/or unrealized) from contractual obligations related to carbon credits during the reporting period. + References No definition available. + Details
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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. + 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 + Details
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- Definition Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -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 210.5-03.7(b)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation. + 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 210.5-03.3) -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 3 -Article 5 + Details
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- Definition Reflects the sum of all other revenue and income recognized by the entity in the period not otherwise specified in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.4) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 4 -Article 7 + Details
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- Definition The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -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 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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