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Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions	Jul. 02, 2016 USD ($)
Climate Control Group [Member]
Summary Of Significant Accounting Policies [Line Items]
Purchase price of outstanding shares of stock to be sold under Stock Purchase Agreement	$ 364

X

- Definition

Sale of stock, consideration to be received.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Summary of significant accounting policies.

+ References

No definition available.

+ Details

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Namespace Prefix:	lxu_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=lxu_ClimateControlGroupMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: