Income Tax Audit/Change in Accounting Estimate (Details Textual )		3 Months Ended
Apr. 30, 2013 USD ($)	Apr. 30, 2013 China Tax Authority [Member] USD ($)	Apr. 30, 2013 China Tax Authority [Member] CNY	Apr. 30, 2013 Argentina Subsidiary [Member] China Tax Authority [Member] USD ($)
Deferred Tax Assets, Goodwill and Intangible Assets Net	$ 0
Deferred Tax Liability Maximum Additional Tax Liability		16,000	100,000
Investment In Subsidiary For Tax Avoidance				$ 500,000

Amount net of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill.

No definition available.

Name:	lake_DeferredTaxAssetsGoodwillAndIntangibleAssetsNet
Namespace Prefix:	lake_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant