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Property and Business Interruption Insurance Claims and Recoveries - Additional Information (Detail) (USD $) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2013
Property And Or Business Interruption Insurance Claims [Line Items] |  |  |  |  |
Deferred gain on insurance recovery | $ 25,417,000 |  |  |  | $ 25,417,000
Insurance claim receivable | 2,602,000 |  |  | 10,059,000 | 2,602,000
El Dorado Facility [Member] |  |  |  |  |
Property And Or Business Interruption Insurance Claims [Line Items] |  |  |  |  |
Insurance payments received with reservation of rights |  |  |  |  | 40,000,000
Approved insurance payments |  |  |  |  | 60,000,000
El Dorado Facility [Member] | Property Insurance [Member] |  |  |  |  |
Property And Or Business Interruption Insurance Claims [Line Items] |  |  |  |  |
Deductible property damage under insurance |  |  |  |  | 1,000,000
Approved insurance payments |  |  |  |  | 48,000,000
Insurance claim recoverable costs |  |  |  |  | 24,600,000
Deferred gain on insurance recovery | 23,400,000 |  |  |  | 23,400,000
El Dorado Facility [Member] | Business Interruption Insurance [Member] |  |  |  |  |
Property And Or Business Interruption Insurance Claims [Line Items] |  |  |  |  |
Waiting period for business interruption coverage |  |  |  |  | 30 days
Approved insurance payments |  |  |  |  | 12,000,000
Insurance claim receivable | 700,000 |  |  |  | 700,000
El Dorado Facility [Member] | Business Interruption Insurance [Member] | Cost of sales [Member] |  |  |  |  |
Property And Or Business Interruption Insurance Claims [Line Items] |  |  |  |  |
Insurance claim recoverable costs | 4,200,000 | 500,000 | 700,000 | 7,300,000 | 12,700,000
Cherokee Facility [Member] | Property Insurance [Member] |  |  |  |  |
Property And Or Business Interruption Insurance Claims [Line Items] |  |  |  |  |
Deductible property damage under insurance |  |  |  |  | 2,500,000
Cherokee Facility [Member] | Business Interruption Insurance [Member] |  |  |  |  |
Property And Or Business Interruption Insurance Claims [Line Items] |  |  |  |  |
Waiting period for business interruption coverage |  |  |  |  | 30 days
Insurance payments received with reservation of rights |  |  |  |  | 15,000,000
Deferred gain on insurance recovery | 2,000,000 |  |  |  | 2,000,000
Insurance claim receivable | 1,900,000 |  |  |  | 1,900,000
Cherokee Facility [Member] | Business Interruption Insurance [Member] | Cost of sales [Member] |  |  |  |  |
Property And Or Business Interruption Insurance Claims [Line Items] |  |  |  |  |
Insurance claim recoverable costs |  | $ 2,900,000 | $ 10,100,000 |  | $ 13,000,000

X
- 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

X
- 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

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

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

X
- Definition Amounts due for claims covered under insurance policies and to be paid by our insurance companies. + References No definition available. + Details
Name: | lxu_InsuranceClaimsReceivable
Namespace Prefix: | lxu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Proceeds from insurance recoveries with reservation of rights. + References No definition available. + Details
Name: | lxu_ProceedsFromInsuranceRecoveriesWithReservationOfRights
Namespace Prefix: | lxu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | lxu_PropertyAndOrBusinessInterruptionInsuranceClaimsLineItems
Namespace Prefix: | lxu_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Waiting period before costs can be included in a claim for business interruption insurance coverage. + References No definition available. + Details
Name: | lxu_WaitingPeriodForBusinessInterruptionInsuranceCoverage
Namespace Prefix: | lxu_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration