Advance rate for the amounts to be borrowed under the credit facility.

No definition available.

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

- Definition

This element represents the percentage of accounts receivable used in calculation of borrowing base.

+ References

No definition available.

+ Details

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

- Definition

Line Of Credit Facility Borrowing Base Commitment Amount

+ References

No definition available.

+ Details

Name:	lake_LineOfCreditFacilityBorrowingBaseCommitmentAmount
Namespace Prefix:	lake_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line Of Credit Facility Borrowing Base Commitment Percentage

+ References

No definition available.

+ Details

Name:	lake_LineOfCreditFacilityBorrowingBaseCommitmentPercentage
Namespace Prefix:	lake_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of Credit Facility Increase Limit

+ References

No definition available.

+ Details

Name:	lake_LineOfCreditFacilityIncreaseLimit
Namespace Prefix:	lake_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The service charge percentage as per the loan agreement.

+ References

No definition available.

+ Details

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

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

+ Details

Name:	us-gaap_DebtInstrumentPeriodicPayment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Date the first payment under the line of credit must be paid, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityDateOfFirstRequiredPayment1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The effective interest rate at the end of the reporting period.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityInterestRateDescription
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of the required periodic payments of both interest and principal.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityPeriodicPayment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_NotesPayable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585

+ Details

Name:	us-gaap_RepaymentsOfLongTermLinesOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
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-Section S99
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(1))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_ShortTermBorrowings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of a short-term obligation that has been excluded from current liabilities in the balance sheet because of a refinancing of the obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1927-112601

+ Details

Name:	us-gaap_ShortTermDebtRefinancedAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=lake_ArgentinaLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=lake_ArgentinaLoanOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=lake_ArgentinaSubsidiaryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=lake_BorrowingsInUkMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	lake_AgreementAxis=lake_AmendmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	lake_TypeOfLoanAgreementAxis=lake_SeniorLoanAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=lake_SunTrustBankMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=lake_AlostarBankOfCommerceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=lake_TermLoanMember
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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=lake_BusinessDevelopmentBankOfCanadaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
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Period Type:

Long-Term Debt (Details Textual)		1 Months Ended
Long-Term Debt (Details Textual)	May 10, 2017 USD ($)	Jan. 31, 2017	Dec. 31, 2016	Dec. 31, 2014 USD ($)	Sep. 30, 2013 USD ($)	Sep. 30, 2013 CAD ($)	Apr. 30, 2018 USD ($)	Apr. 30, 2018 ARS ($)	Feb. 26, 2018 USD ($)	Feb. 26, 2018 ARS ($)	Jan. 31, 2018 USD ($)	Jun. 28, 2017	May 19, 2017 USD ($)	May 19, 2017 ARS ($)	Jul. 01, 2016 USD ($)	Jul. 01, 2016 ARS ($)	Apr. 30, 2015 USD ($)	Dec. 31, 2014 GBP (£)	Jun. 28, 2013 USD ($)
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate Description	For that portion of the term loan that consists of Eurodollar loans, the term loan shall bear interest at the LIBOR Market Index Rate (LIBOR) plus 2.0% per annum, and for that portion of the term loan that consists of base rate loans, the term loan shall bear interest at the base rate then in effect plus 1.0% per annum. All principal and unpaid accrued interest under the revolver credit facility shall be due and payable on the maturity date of the revolver. For that portion of the revolver loan that consists of Eurodollar loans, the revolver shall bear interest at LIBOR plus a margin rate of 1.75% per annum for the first six months and thereafter between 1.5% and 2.0%, depending on the Companys availability calculation (as defined in the Loan Agreement) and, for that portion of the revolver that consists of base rate loans, the revolver shall bear interest at the base rate then in effect plus a margin rate of 0.75% per annum for the first six months and thereafter between 0.50% and 1.0%, depending on the availability calculation. As of the closing, the Company elected all borrowings under the Loan Agreement to accrue interest at LIBOR which, as of that date, was 0.99500%. As such, the initial rate of interest for the revolver is 2.745% per annum and the initial rate of interest for the term loan is 2.995% per annum. The Loan Agreement provides for payment of an unused line fee of between 0.25% and 0.50%, depending on the amount by which the revolving credit loan commitment exceeds the amount of the revolving credit loans outstanding (including letters of credit), which shall be payable monthly in arrears on the average daily unused portion of the revolver.
Short-term Debt							$ 177,000				$ 211,000
Argentina Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage									0.00%	0.00%			20.00%	20.00%	27.06%	27.06%
Long-term Line of Credit							7,000	$ 3,500,000	$ 215,000,000,000	$ 4,300,000			$ 112,000	$ 1,800,000	$ 38,000	$ 569,000
Argentina Loan One [Member]
Debt Instrument [Line Items]
Long-term Line of Credit								$ 200,000
Argentina Subsidiary [Member]
Debt Instrument [Line Items]
Long-term Line of Credit							177,000										$ 300,000
Borrowings In UK [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity				$ 1,900,000														£ 1,250,000
Line Of Credit Facility Advance Rate				3.46%
Short-term Debt							$ 0				$ 200,000
Notes Payable				$ 600,000														400,000
Service Charge Percentage		0.85%	0.90%
Borrowings In UK [Member] \| Amendment [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity				$ 2,300,000														£ 1,500,000
Line Of Credit Facility Advance Rate				3.00%
Senior Loan Agreement [Member]
Debt Instrument [Line Items]
Long-term Line of Credit																			$ 15,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate at Period End												4.25%
Revolving Credit Facility [Member] \| Sun Trust Bank [Member]
Debt Instrument [Line Items]
Line Of Credit Facility, Borrowing Base Calculation, Percentage Of Accounts Receivable	85.00%
Line of Credit Facility, Maximum Borrowing Capacity	$ 30,000,000
Long-term Line of Credit	20,000,000
Line of Credit Facility, Periodic Payment	13,125
Line of Credit Facility Increase Limit	10,000,000
Line Of Credit Facility Borrowing Base Commitment Amount	$ 1,500,000
Line Of Credit Facility Borrowing Base Commitment Percentage	7.50%
Line of Credit Facility, Date of First Required Payment	Jun. 01, 2017
Revolving Credit Facility [Member] \| AloStar Bank of Commerce [Member]
Debt Instrument [Line Items]
Repayments of Long-term Lines of Credit	$ 3,000,000
Term Loan [Member] \| Sun Trust Bank [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	1,575,000
Business Development Bank Of Canada [Member]
Debt Instrument [Line Items]
Short-term Debt, Refinanced, Amount					$ 1,100,000
Debt Instrument, Term					240 months	240 months
Debt Instrument, Interest Rate, Effective Percentage					6.45%	6.45%
Debt Instrument, Periodic Payment					$ 6,048	$ 8,169
Letter of Credit [Member] \| Sun Trust Bank [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	$ 5,000,000