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Discontinued Operations in India (Details Textual) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Oct. 31, 2012
Discontinued Operation Income Loss On Pretax Loss On Disposal	$ 1.4
Disposal Group Including Discontinued Operation Fixed Assets Write Downs	0.9
Disposal Group Including Discontinued Operation Inventory Write Downs	0.4
Disposal Group Including Discontinued Operation Professional Fees	0.1
Disposal Group Including Discontinued Operation Shutdown Expenses	$ 0.3

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

X

- Definition

Amount of professional fees attributable to the disposal group, including a component of the entity (discontinued operation).

+ References

No definition available.

+ Details

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

X

- Definition

Amount of shutdown expenses attributable to the disposal group, including a component of the entity (discontinued operation).

+ References

No definition available.

+ Details

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