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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 | $ 26,524,000 us-gaap_SalesRevenueGoodsNet | $ 25,093,000 us-gaap_SalesRevenueGoodsNet | $ 24,610,000 us-gaap_SalesRevenueGoodsNet | $ 23,507,000 us-gaap_SalesRevenueGoodsNet | $ 22,222,000 us-gaap_SalesRevenueGoodsNet | $ 22,787,000 us-gaap_SalesRevenueGoodsNet | $ 24,639,000 us-gaap_SalesRevenueGoodsNet | $ 21,737,000 us-gaap_SalesRevenueGoodsNet | $ 99,733,744 us-gaap_SalesRevenueGoodsNet | $ 91,384,695 us-gaap_SalesRevenueGoodsNet
Sales Revenue, Percentage |  |  |  |  |  |  |  |  | 100.00%us-gaap_ConcentrationRiskPercentage1 | 100.00%us-gaap_ConcentrationRiskPercentage1
Domestic [Member] |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 50,070,000 us-gaap_SalesRevenueGoodsNet / us-gaap_StatementGeographicalAxis = lake_DomesticMember | 46,730,000 us-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 |  |  |  |  |  |  |  |  | $ 49,660,000 us-gaap_SalesRevenueGoodsNet / us-gaap_StatementGeographicalAxis = lake_InternationalMember | $ 44,650,000 us-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

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