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Property and Business Interruption Insurance Claims and Recoveries - Additional Information (Detail) (USD $) | 6 Months Ended | 1 Months Ended | 3 Months Ended | 1 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended |  | 1 Months Ended | 6 Months Ended
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Jun. 30, 2014 | Jan. 31, 2014 Cherokee Facility [Member] | Jun. 30, 2013 Cherokee Facility [Member] Cost of sales [Member] | Mar. 31, 2013 Cherokee Facility [Member] Cost of sales [Member] | Jan. 31, 2014 Cherokee Facility [Member] Property Insurance [Member] | Jun. 30, 2014 Cherokee Facility [Member] Property Insurance [Member] | Mar. 31, 2013 Cherokee Facility [Member] Business Interruption Insurance [Member] | Jun. 30, 2014 Cherokee Facility [Member] Business Interruption Insurance [Member] | Jun. 30, 2013 Cherokee Facility [Member] Business Interruption Insurance [Member] | Dec. 31, 2013 Cherokee Facility [Member] Business Interruption Insurance [Member] | Jan. 31, 2014 Cherokee Facility [Member] Business Interruption Insurance [Member] Cost of sales [Member] | Jun. 30, 2013 Cherokee Facility [Member] Business Interruption Insurance [Member] Cost of sales [Member]
Property And Or Business Interruption Insurance Claims [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Deductible property damage under insurance |  |  |  |  |  | $ 2,500,000 |  |  |  |  |  |
Waiting period for business interruption coverage |  |  |  |  |  |  |  | 30 days |  |  |  |
Insurance claim recoverable costs |  |  | 2,900,000 | 10,100,000 |  | 1,900,000 |  |  |  |  |  | 13,000,000
Insurance recoveries in excess of recoverable costs not recognized |  |  |  |  |  |  |  |  | 2,000,000 |  |  |
Approved insurance payments |  | 43,500,000 |  |  | 7,000,000 |  |  |  |  |  | 21,500,000 |
Approved insurance payments received |  | 28,500,000 |  |  |  |  |  |  |  |  |  |
Approved insurance payments received prior to conclusion |  |  |  |  |  |  | 15,000,000 |  |  |  |  |
Property insurance recoveries in excess of losses incurred | 5,147,000 |  |  |  |  | 5,100,000 |  |  |  |  |  |
Deferred gain on insurance recovery |  |  |  |  |  |  |  |  |  | $ 1,400,000 |  |

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- Definition Amount approved by an insurance company in settlement or partial settlement of a claim for reimbursement when the Company has suffered a loss covered under an insurance policy. + References No definition available. + Details
Name: | lxu_AmountApprovedUnderInsuranceClaim
Namespace Prefix: | lxu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Deductible for property damage. + References No definition available. + Details
Name: | lxu_DeductibleForPropertyDamage
Namespace Prefix: | lxu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Amount of gain contingency relating to an insurance recovery that was deferred as of the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | lxu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of recoverable costs included in an insurance claim. + References No definition available. + Details
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Namespace Prefix: | lxu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The amount of insurance recoveries in excess of recoverable costs, which did not meet the criteria for recognition. + References No definition available. + Details
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- Definition Proceeds from insurance recoveries. + References No definition available. + Details
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Namespace Prefix: | lxu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Proceeds from insurance recoveries prior to conclusion of claims. + References No definition available. + Details
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Namespace Prefix: | lxu_
Data Type: | xbrli:monetaryItemType
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- Details
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Namespace Prefix: | lxu_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition The amount of property insurance recoveries in excess of losses incurred. + References No definition available. + Details
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Namespace Prefix: | lxu_
Data Type: | xbrli:monetaryItemType
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- Definition Waiting period before costs can be included in a claim for business interruption insurance coverage. + References No definition available. + Details
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