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Accounts Receivable - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017 Customer
Receivables [Abstract]
Number of customers accounted as percentage of accounts receivable	6
Percentage of net receivables	36.00%

X

- Definition

Number of customers accounted as percentage of accounts receivable.

+ References

No definition available.

+ Details

Name:	lxu_NumberOfCustomersAccountedAsPercentageOfAccountsReceivable
Namespace Prefix:	lxu_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of net receivables.

+ References

No definition available.

+ Details

Name:	lxu_PercentageOfNetReceivables
Namespace Prefix:	lxu_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_ReceivablesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration