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Segment Information (Details 2) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2015 segment | Mar. 31, 2014
Net sales and long-lived assets by geographical area |  |
Number of Reportable Segments | 3 us-gaap_NumberOfReportableSegments |
Net sales | $ 176,491 us-gaap_SalesRevenueNet | $ 168,288 us-gaap_SalesRevenueNet
Wood Construction Products |  |
Net sales and long-lived assets by geographical area |  |
Net sales | 151,379 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = ssd_WoodConstructionMember | 144,676 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = ssd_WoodConstructionMember
Concrete Construction Products |  |
Net sales and long-lived assets by geographical area |  |
Net sales | 25,010 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = ssd_ConcreteConstructionMember | 23,524 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = ssd_ConcreteConstructionMember
Other |  |
Net sales and long-lived assets by geographical area |  |
Net sales | $ 102 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = ssd_OtherProductsMember | $ 88 us-gaap_SalesRevenueNet / us-gaap_ProductOrServiceAxis = ssd_OtherProductsMember

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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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- Details
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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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- Details
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Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Balance Type: |
Period Type: |