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Subsequent Events - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	1 Months Ended
	Mar. 31, 2013	Apr. 30, 2013 Subsequent Events [Member] Cherokee Facility [Member] Business Interruption [Member]
Subsequent Event [Line Items]
Approved insurance payments received		$ 15
Earliest date agreement can be terminated	Apr. 09, 2015

X

- Definition

The earliest date which the ammonium nitrate supply agreement can be terminated.

+ References

No definition available.

+ Details

Name:	lxu_AmmoniumNitrateSupplyAgreementEarliestTerminationDate
Namespace Prefix:	lxu_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Proceeds from insurance recoveries.

+ References

No definition available.

+ Details

Name:	lxu_ProceedsFromInsuranceRecoveries
Namespace Prefix:	lxu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration