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VAT Tax Issue in Brazil (Details Textual) |  | 3 Months Ended | 12 Months Ended | 3 Months Ended
--- | --- | --- | --- | ---
Apr. 30, 2014 USD ($) | Apr. 30, 2014 BRL | Apr. 30, 2014 After State Amnesty Accepted [Member] USD ($) | Apr. 30, 2014 After State Amnesty Accepted [Member] BRL | Jan. 31, 2014 Claim December 2013 By State of Sao Paulo [Member] USD ($) | Apr. 30, 2014 Maximum [Member] | Apr. 30, 2014 Minimum [Member]
Vat Tax Issue In Brazil [Line Items] |  |  |  |  |  |  |
Value Added Tax Examination Claims Incurred In Period |  |  |  |  | $ 45,000 |  |
Value Added Tax Examination Penalties and Interest Expense |  |  |  |  | 200,000 |  |
Value Added Tax, Judicial Tax Claim Percentage | 20.00% | 20.00% |  |  |  |  |
Value Added Tax, Judicial Tax Claim Amount | 6,700,000 | 15,000,000 |  |  |  |  |
Formal Judicial Process Period |  |  |  |  |  | 10 years | 5 years
Value Added Tax Claims, Accepted Amnesty for Smaller Claim, Frequency of Periodic Payment |  |  | monthly | monthly |  |  |
Value Added Tax Claims, Accepted Amnesty for Smaller Claim, Number of Periodic Payment |  |  | 8 Installments | 8 Installments |  |  |
Value Added Tax Claims, Accepted Amnesty for Smaller Claim, Periodic Payment |  |  | 19,000 | 42,000 |  |  |
Value Added Tax Claims, Percentage of Abatement for Penalty and Interest |  |  | 80.00% | 80.00% |  |  |
Value Added Tax Claims, Penalty and Interest, Accrued |  |  | $ 153,000 |  |  |  |

X
- Definition This element represents the number of years of judicial process. + References No definition available. + Details
Name: | lake_FormalJudicialProcessPeriod
Namespace Prefix: | lake_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents that, the description of the frequency of periodic payments (monthly, quarterly, annual) for accepted amnesty for smaller claim under value added tax claims. + References No definition available. + Details
Name: | lake_ValueAddedTaxClaimsAcceptedAmnestyForSmallerClaimFrequencyOfPeriodicPayment
Namespace Prefix: | lake_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition This element represents that, the description of the number of periodic payments for accepted amnesty for smaller claim under value added tax claims. + References No definition available. + Details
Name: | lake_ValueAddedTaxClaimsAcceptedAmnestyForSmallerClaimNumberOfPeriodicPayment
Namespace Prefix: | lake_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition This element represents that, the amount of periodic payments for accepted amnesty for smaller claim under value added tax claims. + References No definition available. + Details
Name: | lake_ValueAddedTaxClaimsAcceptedAmnestyForSmallerClaimPeriodicPayment
Namespace Prefix: | lake_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents that, the amount of accrued penalty and interest under value added tax claims. + References No definition available. + Details
Name: | lake_ValueAddedTaxClaimsPenaltyAndInterestAccrued
Namespace Prefix: | lake_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This element represents that, the percentage of abatement for penalty and interest under value added tax claims. + References No definition available. + Details
Name: | lake_ValueAddedTaxClaimsPercentageOfAbatementForPenaltyAndInterest
Namespace Prefix: | lake_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The claims Incurred in Period resulting from the income tax examination that has been recorded during the period. + References No definition available. + Details
Name: | lake_ValueAddedTaxExaminationClaimsIncurredInPeriod
Namespace Prefix: | lake_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The sum of the amounts of estimated penalties and interest recognized in the period arising from tax examinations. + References No definition available. + Details
Name: | lake_ValueAddedTaxExaminationPenaltiesAndInterestExpense
Namespace Prefix: | lake_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This element represents the amount of judicial tax claim filed against the company. + References No definition available. + Details
Name: | lake_ValueaddedtaxJudicialTaxClaimAmount
Namespace Prefix: | lake_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This element represents the percentage of judicial tax claim filed against the company. + References No definition available. + Details
Name: | lake_ValueAddedTaxJudicialTaxClaimPercentage
Namespace Prefix: | lake_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | lake_VatTaxIssueInBrazilLineItems
Namespace Prefix: | lake_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration