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Loan Agreement Covenant (Details)	3 Months Ended
	Mar. 31, 2018
Loan Agreement [Line Items]
Minimum Debt Service Coverage Ratio	1.25
Maximum [Member] | Actual Value [Member]
Loan Agreement [Line Items]
Minimum Debt Service Coverage Ratio	3.61
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

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

X

- 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

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

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	laws_DebtCovenantValueAxis=laws_ActualValueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	laws_DebtCovenantValueAxis=laws_RequiredMinimumValueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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