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Supplemental Cash Flow Information - Additional Information Relating to Cash Flow Activities (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Supplemental Cash Flow Elements [Abstract] |  |
Cash refunds for income taxes, net | $ (3,786)us-gaap_IncomeTaxesPaidNet | $ (6,895)us-gaap_IncomeTaxesPaidNet
Noncash investing and financing activities: |  |
Accounts payable and long-term debt associated with additions of property, plant and equipment | 44,618 us-gaap_CapitalExpendituresIncurredButNotYetPaid | 13,601 us-gaap_CapitalExpendituresIncurredButNotYetPaid
Accounts payable, long-term debt associated with additions of capitalized internal-use software and software development | $ 1,299 lxu_NoncashCapitalizedSoftwareAdditions | $ 1,239 lxu_NoncashCapitalizedSoftwareAdditions

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- Definition Noncash additions of capitalized internal-use software and software development. + References No definition available. + Details
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- Definition Future cash outflow to pay for purchases of fixed assets that have occurred. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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- Details
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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586 + Details
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- Details
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