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Discontinued Operations in India (Details Textual) (USD $)	12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
Discontinued Operation Income Loss On Pretax Loss On Disposal		$ 1,700,000
Disposal Group Including Discontinued Operation Fixed Assets Write Downs	800,000	1,000,000
Disposal Group Including Discontinued Operation Inventory Write Downs	$ 69,000	$ 100,000

X

- Definition

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.

+ References

No definition available.

+ Details

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

X

- Definition

Amount of write downs attributable to the fixed assets of disposal group, including a component of the entity (discontinued operation).

+ References

No definition available.

+ Details

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

X

- Definition

Amount of write downs attributable to the inventory of disposal group, including a component of the entity (discontinued operation).

+ References

No definition available.

+ Details

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