MAJOR SUPPLIER (Details Textual)	12 Months Ended
Jan. 31, 2016	Jan. 31, 2015
Major Supplier [Line Items]
Entity Wide Purchases Major Supplier Percentage	10.00%	10.00%
Precision Fabrics Group [Member]
Major Supplier [Line Items]
Entity Wide Purchases Major Supplier Percentage	9.50%	7.80%

Percentage of purchases from a single external supplier that accounts for 10 percent or more of an entity's purchases.

No definition available.

Name:	lake_EntityWidePurchasesMajorSupplierPercentage
Namespace Prefix:	lake_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration