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CONSOLIDATED STATEMENTS OF OPERATIONS [Parenthetical] (USD $)	12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013
Disposal Group Including Discontinued Operation Shutdown Expenses Accrual	$ 0	$ 800,000

X

- Definition

Amount of operating expenses accrual or loss attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

+ References

No definition available.

+ Details

Name:	lake_DisposalGroupIncludingDiscontinuedOperationShutdownExpensesAccrual
Namespace Prefix:	lake_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration