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Commitments and Contingencies (Details Textual) (USD $)
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Dec. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2007
Commitments and Contingencies (Textual) [Abstract]            
Minimum payments remaining under the Company's lease relating to its reconsidered corporate relocation for 2013 $ 6,124,000     $ 6,124,000    
Minimum payments remaining under the Company's lease relating to its reconsidered corporate relocation for 2014 6,206,000     6,206,000    
Minimum payments remaining under the Company's lease relating to its reconsidered corporate relocation for 2015 5,865,000     5,865,000    
Minimum payments remaining under the Company's lease relating to its reconsidered corporate relocation for 2016 5,027,000     5,027,000    
Minimum payments remaining under the Company's lease relating to its reconsidered corporate relocation for 2017 5,152,000     5,152,000    
Minimum payments remaining under the Company's lease relating to its reconsidered corporate relocation, thereafter 20,474,000     20,474,000    
Estimated contract termination costs       727,000    
Commitments and Contingencies (Additional Textual) [Abstract]            
Average period for PE material purchases under short-term supply contracts for which pricing is negotiated as needed       2 years    
Cash payments for related claims       8,845,000 8,103,000 28,000,000
Increase in warranty reserve   20,000,000 10,000,000 21,487,000 9,976,000  
Percentage change in warranty claims used as a threshold for disclosure       10.00%    
Change in warranty reserve for disclosure purposes only 3,000,000     3,000,000    
Expense related to legal claims 1,500,000          
Expected net cost related to legal claims 10,000,000     10,000,000    
Sublease [Member]
            
Commitments and Contingencies (Textual) [Abstract]            
Lease square feet 55,047     55,047    
Contract Termination [Member]
            
Commitments and Contingencies (Textual) [Abstract]            
Beginning date of corporate headquarters lease       Jan. 01, 2006    
Expiration date of reconsidered corporate headquarters lease       Jun. 30, 2019    
Lease square feet 55,047     55,047    
Minimum payments remaining under the Company's lease relating to its reconsidered corporate relocation for 2013 1,700,000     1,700,000    
Minimum payments remaining under the Company's lease relating to its reconsidered corporate relocation for 2014 1,700,000     1,700,000    
Minimum payments remaining under the Company's lease relating to its reconsidered corporate relocation for 2015 1,700,000     1,700,000    
Minimum payments remaining under the Company's lease relating to its reconsidered corporate relocation for 2016 1,800,000     1,800,000    
Minimum payments remaining under the Company's lease relating to its reconsidered corporate relocation for 2017 1,800,000     1,800,000    
Minimum payments remaining under the Company's lease relating to its reconsidered corporate relocation, thereafter 2,700,000     2,700,000    
Minimum receipts remaining under the Company's existing subleases for 2013 1,500,000     1,500,000    
Minimum receipts remaining under the Company's existing subleases for 2014 1,500,000     1,500,000    
Minimum receipts remaining under the Company's existing subleases for 2015 600,000     600,000    
Minimum receipts remaining under the Company's existing subleases for 2016 600,000     600,000    
Minimum receipts remaining under the Company's existing subleases for 2017 600,000     600,000    
Minimum receipts remaining under the Company's existing subleases, thereafter 1,000,000     1,000,000    
Minimum [Member]
            
Commitments and Contingencies (Textual) [Abstract]            
Expiration period of existing subleases       2013    
Maximum [Member]
            
Commitments and Contingencies (Textual) [Abstract]            
Expiration period of existing subleases       2019    
Waste Wood & PE Material Supply Contracts [Member]
            
Commitments and Contingencies (Textual) [Abstract]            
Purchase commitment 18,500,000     18,500,000    
Purchase commitment, due in second year 8,600,000     8,600,000    
Purchase commitment, due in third year 500,000     500,000    
Purchase commitment, due in fourth year 12,000     12,000    
Third-Party Manufacturing Contracts [Member]
            
Commitments and Contingencies (Textual) [Abstract]            
Purchase commitment 7,300,000     7,300,000    
Purchase commitment, due in second year 4,400,000     4,400,000    
Purchase commitment, due in third year $ 1,900,000     $ 1,900,000    
Residential use [Member]
            
Commitments and Contingencies (Textual) [Abstract]            
Warranty period       25 years    
Residential use [Member] | Transcend, Enhance and Universal Fascia Product [Member]
            
Commitments and Contingencies (Textual) [Abstract]            
Warranty period       25 years    
Commercial use [Member]
            
Commitments and Contingencies (Textual) [Abstract]            
Warranty period       10 years    
Commercial use [Member] | Transcend, Enhance and Universal Fascia Product [Member]
            
Commitments and Contingencies (Textual) [Abstract]            
Warranty period       10 years