Restructuring - Additional Information (Detail) (USD $)	3 Months Ended				9 Months Ended				12 Months Ended		33 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011		Dec. 31, 2011	Dec. 31, 2010	Sep. 30, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring charges (credits)	$ 1,460,000	[1]	$ 2,625,000	[1]	$ 15,805,000	[1]	$ 6,588,000	[1]	$ 8,584,000	$ 2,196,000	$ 26,585,000
Restructuring Fiscal 2011 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges (credits)	33,000				1,100,000				8,600,000
Restructuring Fiscal 2012 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges (credits)	1,400,000				14,700,000
Headcount reduction, percentage					7.00%
Number of production facilities closed	4				4						4
Restructuring Fiscal 2012 Plan | Facility Closing
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs					9,400,000
Restructuring Fiscal 2012 Plan | Termination Benefits | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs					60,000,000
Restructuring Fiscal 2012 Plan | Termination Benefits | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs					65,000,000
Restructuring Fiscal 2012 Plan | Other | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs					15,000,000
Restructuring Fiscal 2012 Plan | Other | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs					20,000,000
Restructuring Fiscal 2012 Plan | Fixed Asset Impairment | Minimum
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs					10,000,000
Restructuring Fiscal 2012 Plan | Fixed Asset Impairment | Maximum
Restructuring Cost and Reserve [Line Items]
Expected restructuring costs					$ 15,000,000
Restructuring Fiscal 2012 Plan | UNITED STATES
Restructuring Cost and Reserve [Line Items]
Number of production facilities closed	2				2						2
Restructuring Fiscal 2012 Plan | SWEDEN
Restructuring Cost and Reserve [Line Items]
Number of production facilities closed	1				1						1
Restructuring Fiscal 2012 Plan | UNITED KINGDOM
Restructuring Cost and Reserve [Line Items]
Number of production facilities closed	1				1						1

[1] See Note 3 "Restructuring."