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Discontinued Operations in India (Details Textual) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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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

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

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- 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