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