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Executive Benefits Agreements and Employees Savings Plans - Executive Benefit Expenses (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Compensation Related Costs [Abstract] |  |  |
Costs (recovery of costs) associated with executive benefits included in SG&A, net | $ (561) | $ 166 | $ (2)

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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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- References No definition available. + Details
Name: | us-gaap_CompensationRelatedCostsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration