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Executive Benefits Agreements and Employees Savings Plans - Executive Benefit Expenses (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Compensation Related Costs [Abstract] |  |  |
Costs associated with executive benefits included in SG&A, net | $ 166 lxu_ExecutiveBenefitCostsNet | $ (2)lxu_ExecutiveBenefitCostsNet | $ 186 lxu_ExecutiveBenefitCostsNet

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- Definition Net costs associated with executive benefits agreements included in SG&A during the reporting period. + References No definition available. + Details
Name: | lxu_ExecutiveBenefitCostsNet
Namespace Prefix: | lxu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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