XML 51 R36.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Revolving Line of Credit (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Debt Disclosure [Abstract] |
Debt covenants [Table Text Block] |
Quarterly Financial Covenants |  | Requirement |  | Actual
EBITDA to fixed charges ratio |  | 1.10 : 1.00 |  | 3.62 : 1.00

X
- Definition Debt covenants [Table Text Block] + References No definition available. + Details
Name: | laws_DebtcovenantsTableTextBlock
Namespace Prefix: | laws_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DebtDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration