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Loan Agreement Covenant (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014
Actual Value [Member]
Loan Agreement [Line Items]
MinTangibleNetWorth	$ 56,668
Required Minimum Value [Member]
Loan Agreement [Line Items]
MinTangibleNetWorth	$ 45,000
Maximum [Member] | Actual Value [Member]
Loan Agreement [Line Items]
Minimum Debt Service Coverage Ratio	2.73
Maximum [Member] | Required Minimum Value [Member]
Loan Agreement [Line Items]
Minimum Debt Service Coverage Ratio	1.10
Minimum [Member] | Actual Value [Member]
Loan Agreement [Line Items]
Minimum Debt Service Coverage Ratio	1.00
Minimum [Member] | Required Minimum Value [Member]
Loan Agreement [Line Items]
Minimum Debt Service Coverage Ratio	1.00

X

- Definition

Minimum debt service coverage ratio.

+ References

No definition available.

+ Details

Name:	laws_MinimumDebtServiceCoverageRatio
Namespace Prefix:	laws_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Minimum Tangible Net Worth

+ References

No definition available.

+ Details

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

X

- Details

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