Commitments and Contingencies (Details Textual) (USD $)	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Dec. 31, 2007
Commitments and Contingencies (Additional Textual) [Abstract]
Estimated contract termination costs		$ 127,000
Cash payments for related claims		6,252,000	5,949,000	8,000,000	28,000,000
Increase in warranty reserve	20,000,000	21,487,000
Percentage change in warranty claims used as a threshold for disclosure		10.00%
Change in warranty reserve for disclosure purposes only	3,200,000	3,200,000
Sublease [Member]
Commitments and Contingencies (Textual) [Abstract]
Lease square feet	55,047	55,047
Contract Termination [Member]
Commitments and Contingencies (Textual) [Abstract]
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 remainder of 2012	400,000	400,000
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, thereafter	4,500,000	4,500,000
Minimum receipts remaining under the Company's existing subleases for remainder of 2012	400,000	400,000
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	1,200,000	1,200,000
Minimum receipts remaining under the Company's existing subleases for 2015	300,000	300,000
Minimum receipts remaining under the Company's existing subleases for 2016	300,000	300,000
Minimum receipts remaining under the Company's existing subleases, thereafter	$ 900,000	$ 900,000
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
Residential use [Member]
Commitments and Contingencies (Textual) [Abstract]
Warranty period		25 years
Residential use [Member] | Transcend product [Member]
Commitments and Contingencies (Textual) [Abstract]
Warranty period		25 years
Residential use [Member] | Enhance product [Member]
Commitments and Contingencies (Textual) [Abstract]
Warranty period		20 years
Commercial use [Member]
Commitments and Contingencies (Textual) [Abstract]
Warranty period		10 years
Commercial use [Member] | Transcend and Enhance product [Member]
Commitments and Contingencies (Textual) [Abstract]
Warranty period		10 years