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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership interest in equity method investment	20.00%
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership interest in equity method investment	50.00%
Cash and Cash Equivalents [Member]
Summary Of Significant Accounting Policies [Line Items]
Balance in excess of FDIC-insured limits	$ 8
Noncurrent Restricted Cash and Cash Equivalents [Member]
Summary Of Significant Accounting Policies [Line Items]
Balance in excess of FDIC-insured limits	$ 122

X

- Definition

The balance of an asset deposited or invested that are in excess of the FDIC-insured limit.

+ References

No definition available.

+ Details

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

X

- Details

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

X

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
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