Discontinued Operations in India (Details Textual) (USD $) In Millions, unless otherwise specified	9 Months Ended
Oct. 31, 2013
Disposal Group, Including Discontinued Operation, Reduction in Value of Total Assets	$ 0.2

Amount of reduction in value of total assets as a result of sales of inventory and one of the three plots of real estate owned of disposal group, including a component of the entity (discontinued operation).

No definition available.

Name:	lake_DisposalGroupIncludingDiscontinuedOperationReductionInValueOfTotalAssets
Namespace Prefix:	lake_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration