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Related Party Transactions - Additional Information (Detail) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Related Party Transaction [Line Items] |  |  |
Dividends on preferred stocks | $ 300,000 us-gaap_DividendsPreferredStockCash | $ 300,000 us-gaap_DividendsPreferredStockCash | $ 300,000 us-gaap_DividendsPreferredStockCash
Golsen Group [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Dividends on preferred stocks | $ 300,000 us-gaap_DividendsPreferredStockCash / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = lxu_GolsenGroupMember | $ 300,000 us-gaap_DividendsPreferredStockCash / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = lxu_GolsenGroupMember | $ 300,000 us-gaap_DividendsPreferredStockCash / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = lxu_GolsenGroupMember

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- Definition Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |