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Business Segments (Table) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Apr. 04, 2015
Mar. 29, 2014
Revenue from External Customer [Line Items]    
Revenues $ 220,366us-gaap_Revenues $ 196,589us-gaap_Revenues
Vinyl Windows [Member]    
Revenue from External Customer [Line Items]    
Revenues 82,254us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= side_VinylWindowsMember		 69,640us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= side_VinylWindowsMember
Vinyl Siding Products [Member]    
Revenue from External Customer [Line Items]    
Revenues 35,165us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= side_VinylSidingProductsMember		 34,094us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= side_VinylSidingProductsMember
Metal Products [Member]    
Revenue from External Customer [Line Items]    
Revenues 28,407us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= side_MetalProductsMember		 27,307us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= side_MetalProductsMember
Third-Party Payor [Member]    
Revenue from External Customer [Line Items]    
Revenues 47,499us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= side_ThirdPartyManufacturedProductsMember		 42,912us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= side_ThirdPartyManufacturedProductsMember
Other Products and Services [Member]    
Revenue from External Customer [Line Items]    
Revenues $ 27,041us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= side_OtherProductsAndServicesMember		 $ 22,636us-gaap_Revenues
/ us-gaap_ProductOrServiceAxis
= side_OtherProductsAndServicesMember