Restructuring Impairment Charges - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended	6 Months Ended					3 Months Ended	12 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Jun. 30, 2012 High Performance Foams	Jun. 30, 2012 High Performance Foams	Jun. 30, 2012 High Performance Foams Contract Termination [Member]	Jun. 30, 2012 High Performance Foams Employee Severance	Jun. 30, 2012 High Performance Foams Asset impairments [Member]	Jun. 30, 2012 High Performance Foams Facility Closing	Jun. 30, 2012 Other Non-woven composite materials products	Dec. 31, 2011 Other Non-woven composite materials products	Sep. 30, 2012 High Performance Foams	Sep. 30, 2012 High Performance Foams
Restructuring Cost and Reserve [Line Items]
Expenses and charges related to the termination of the operations						$ 3,100,000	$ 900,000	$ 800,000	$ 400,000	$ 300,000
Restructuring and related costs					1,500,000								1,400,000	2,900,000
Net sales	$ 130,248,000	$ 147,344,000	$ 378,292,000	$ 426,773,000							$ 1,400,000	$ 4,800,000