Long-Term Debt - Schedule of Long-Term Debt (Parenthetical) (Detail) (USD $)		1 Months Ended	12 Months Ended		12 Months Ended
	Dec. 31, 2012	May 26, 2011 Secured Term Loan [Member]	Dec. 31, 2012 Secured Term Loan [Member]	Mar. 29, 2011 Secured Term Loan [Member]	Dec. 31, 2012 Working Capital Revolver Loan [Member]	Dec. 31, 2012 Other, with current weighted-average interest rate of 6.85%, most of which is secured by machinery, equipment and real estate [Member]	Dec. 31, 2011 Other, with current weighted-average interest rate of 6.85%, most of which is secured by machinery, equipment and real estate [Member]	Dec. 31, 2012 5.5% Convertible debentures [Member]
Debt Instrument [Line Items]
Weighted-average interest rate of other debt	3.92%					6.85%
Maximum amount of revolving credit facility					$ 50,000,000
Description of interest rate of Revolving Credit Facility					Interest at a base rate (generally equivalent to the prime rate) plus .50% if borrowing availability is greater than $25 million, otherwise plus .75% or, at our option, accrues interest at LIBOR plus 1.50% if borrowing availability is greater than $25 million, otherwise plus 1.75%
Line of credit facility, interest rate					3.75%
Amended Working Capital Revolver Loan maturity date					Mar. 29, 2016
Working Capital Revolver Loan amendment date					Apr. 04, 2012
Amended Working Capital Revolver Loan maturity date conditional extension					Apr. 13, 2017
Letters of credit maximum capacity					15,000,000
Remaining borrowing under Working Capital Revolver Loan					48,400,000
Fees expressed as percentage for unused letters of credit					1.00%
Fees expressed as percentage for unused revolving credit facility					0.25%
Carrying value of the pledged assets			103,000,000		232,000,000
Working Capital Revolver Loan requirements					The Working Capital Revolver Loan requires ThermaClime to meet a minimum fixed charge coverage ratio of not less than 1.10 to 1 measured on an annual basis.
Original principal amount of secured term loan			50,000,000
Modified principal amount of secured term loan				60,000,000
Amended additional principal amount of secured term loan		15,000,000
Amended principal amount of secured loan		75,000,000
Maturity date of original Secured Term Loan			November 2, 2012
Maturity date of amended secured term loan			March 29, 2016
Periodic principal payments of secured loan			900,000
Interest and final balloon payment of secured loan			56,300,000
Secured term loan variable interest rate basis			Three-month LIBOR plus 300 basis points, which rate is adjusted quarterly
Borrowing interest rate basis spread			3.00%
Period for LIBOR			3 months
Carrying value of restricted net assets			122,000,000
Secured Term Loan agreement requirements			Borrowers are also subject to a minimum fixed charge coverage ratio of not less than 1.10 to 1 and a maximum leverage ratio of not greater than 4.50 to 1.
Percentage of principal amount as prepayment premium			1.00%
End date of prepayment premium period			Mar. 29, 2014
Capital lease obligations						$ 370,000	$ 749,000
Debt instrument, interest rate								5.50%