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MANUFACTURING SEGMENT DATA (Details) (USD $)
 3 Months Ended 12 Months Ended
Jan. 31, 2015
Oct. 31, 2014
Jul. 31, 2014
Apr. 30, 2014
Jan. 31, 2014
Oct. 31, 2013
Jul. 31, 2013
Apr. 30, 2013
Jan. 31, 2015
Jan. 31, 2014
Segment Reporting Information [Line Items]                    
Net sales $ 26,524,000us-gaap_SalesRevenueGoodsNet $ 25,093,000us-gaap_SalesRevenueGoodsNet $ 24,610,000us-gaap_SalesRevenueGoodsNet $ 23,507,000us-gaap_SalesRevenueGoodsNet $ 22,222,000us-gaap_SalesRevenueGoodsNet $ 22,787,000us-gaap_SalesRevenueGoodsNet $ 24,639,000us-gaap_SalesRevenueGoodsNet $ 21,737,000us-gaap_SalesRevenueGoodsNet $ 99,733,744us-gaap_SalesRevenueGoodsNet $ 91,384,695us-gaap_SalesRevenueGoodsNet
Sales Revenue, Percentage                 100.00%us-gaap_ConcentrationRiskPercentage1 100.00%us-gaap_ConcentrationRiskPercentage1
Domestic [Member]                    
Segment Reporting Information [Line Items]                    
Net sales                 50,070,000us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementGeographicalAxis
= lake_DomesticMember		 46,730,000us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementGeographicalAxis
= lake_DomesticMember
Sales Revenue, Percentage                 50.21%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_StatementGeographicalAxis
= lake_DomesticMember		 51.14%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_StatementGeographicalAxis
= lake_DomesticMember
International [Member]                    
Segment Reporting Information [Line Items]                    
Net sales                 $ 49,660,000us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementGeographicalAxis
= lake_InternationalMember		 $ 44,650,000us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementGeographicalAxis
= lake_InternationalMember
Sales Revenue, Percentage                 49.79%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_StatementGeographicalAxis
= lake_InternationalMember		 48.86%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_StatementGeographicalAxis
= lake_InternationalMember