Loan Agreement (Details) (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Credit Facility (Textual) [Abstract]
Eligible accounts receivables percentage	80.00%
Eligible accounts receivables past due days	60 days
Eligible inventory percentage	50.00%
Eligible inventory expected to be sold period	18 months
Maximum borrowing amount based on inventory	$ 20,000,000
Secured Debt, Current	0us-gaap_SecuredDebtCurrent
Credit Facility, remaining borrowing capacity	33,400,000
Interest Paid	100,000us-gaap_InterestPaid	300,000us-gaap_InterestPaid
Weighted average interest rate	3.25%us-gaap_DebtWeightedAverageInterestRate
Maximum
Credit Facility (Textual) [Abstract]
Spread on LIBOR	1.85%
Restricted Dividends	7.0
Minimum
Credit Facility (Textual) [Abstract]
Spread on LIBOR	1.50%
Revolving Credit Facility [Member]
Credit Facility (Textual) [Abstract]
Credit facility, borrowing capacity	40,000,000
Letter of Credit [Member]
Credit Facility (Textual) [Abstract]
Credit facility, borrowing capacity	$ 10,000,000

Name:	laws_CreditFacilityTextualAbstract
Namespace Prefix:	laws_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

New credit facility accounts receivable base past due days.

+ References

No definition available.

+ Details

Name:	laws_NewCreditFacilityAccountsReceivableBasePastDueDays
Namespace Prefix:	laws_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

New credit facility accounts receivable base percentage.

+ References

No definition available.

+ Details

Name:	laws_NewCreditFacilityAccountsReceivableBasePercentage
Namespace Prefix:	laws_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

New credit facility inventory base percentage.

+ References

No definition available.

+ Details

Name:	laws_NewCreditFacilityInventoryBasePercentage
Namespace Prefix:	laws_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

New credit facility inventory base selling period.

+ References

No definition available.

+ Details

Name:	laws_NewCreditFacilityInventoryBaseSellingPeriod
Namespace Prefix:	laws_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The maximum borrowings available based on inventory balance under the new credit facility.

+ References

No definition available.

+ Details

Name:	laws_NewCreditFacilityMaximumBorrowingsBasedOnInventory
Namespace Prefix:	laws_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Restricted dividends.

+ References

No definition available.

+ Details

Name:	laws_RestrictedDividends
Namespace Prefix:	laws_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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

- Definition

The amount of cash paid for interest during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3536-108585

+ Details

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

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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

- Definition

Carrying value as of the balance sheet date of the portion of long-term, collateralized debt obligations due within one year or the operating cycle, if longer. Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

+ 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 210.5-02.20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20

-Article 5

+ Details

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

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
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_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: