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INVENTORIES, NET (Details Textual) (USD $) | 12 Months Ended
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Jan. 31, 2013
Increase Decrease In Slow Moving Inventory | $ 288,000

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- Definition The increase (decrease) during the reporting period in the aggregate value of slow moving inventory held by the reporting entity + References No definition available. + Details
Name: | lake_IncreaseDecreaseInSlowMovingInventory
Namespace Prefix: | lake_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration