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v2.4.0.6

Major Supplier (Details Textual) | 3 Months Ended
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Apr. 30, 2013
Entity Wide Purchases Major Supplier Percentage | 5.00%

X
- Definition Percentage of purchases from a single external supplier that accounts for 10 percent or more of an entity's purchases. + References No definition available. + Details
Name: | lake_EntityWidePurchasesMajorSupplierPercentage
Namespace Prefix: | lake_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration