Discontinued Operations in India (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
Jan. 31, 2013	Jan. 31, 2012
Discontinued Operation Income Loss On Pretax Loss On Disposal		$ 1.7
Disposal Group Including Discontinued Operation Fixed Assets Write Downs	0.8	1.0
Disposal Group Including Discontinued Operation Inventory Write Downs	$ 0.6	$ 0.1

Overall income (loss) from a disposal group that is classified as a component of the entity, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

No definition available.

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