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GOODWILL (10-Q) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended 12 Months Ended 9 Months Ended 12 Months Ended 9 Months Ended 12 Months Ended
Sep. 29, 2012
Sep. 29, 2012
Dec. 31, 2011
Dec. 31, 2010
Sep. 29, 2012
Siding, Fencing and Stone [Member]
Dec. 31, 2011
Siding, Fencing and Stone [Member]
Dec. 31, 2010
Siding, Fencing and Stone [Member]
Dec. 31, 2009
Siding, Fencing and Stone [Member]
Sep. 29, 2012
Windows and Doors [Member]
Dec. 31, 2011
Windows and Doors [Member]
Dec. 31, 2010
Windows and Doors [Member]
Dec. 31, 2009
Windows and Doors [Member]
Goodwill [Line Items]                        
Number of reporting units 2 2 2                  
2012 Activity         $ 877              
2012 Activity           0 0   373 (244) 595  
2012 Activity   1,250                    
Goodwill 392,717 392,717 391,467 393,433 320,984 320,107 320,107 320,107 71,733 71,360 73,326 72,731
Intangible asset in this asset purchase $ 100 $ 100