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Executive Benefits Agreements and Employees Savings Plans - Life Insurance Premiums (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Compensation Related Costs [Abstract] |  |  |
Cost of life insurance premiums | $ 1,114 | $ 1,224 | $ 1,159
Increases in cash surrender values | (632) | (752) | (745)
Net cost of life insurance premiums included in SG&A | $ 482 | $ 472 | $ 414

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- Definition Gross cost of life insurance premiums included in SG&A during the reporting period. + References No definition available. + Details
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Namespace Prefix: | lxu_
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Period Type: | instant

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- Definition Net cost of life insurance premiums included in SG&A during the reporting period. + References No definition available. + Details
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Namespace Prefix: | lxu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_CompensationRelatedCostsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition The change in cash surrender or contract value during the period which adjusted the amount of premiums paid in determining the expense or income recognized under the contract for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 30 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6384439&loc=d3e42048-111605 + Details
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