Activity in Rationalization Plan Reserves (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Restructuring Cost and Reserve [Line Items]
Ending Balance	$ 4,600	$ 11,300
2010 Rationalization plans
Restructuring Cost and Reserve [Line Items]
Established	4,404	21,439
Utilized	(13,053)	(10,610)
Currency translation	447
Ending Balance	2,627	10,829
2010 Rationalization plans | Employee Severance and Benefits
Restructuring Cost and Reserve [Line Items]
Established	2,973	12,641
Utilized	(11,622)	(1,812)
Currency translation	447
Ending Balance	2,627	10,829
2010 Rationalization plans | Non-Cash Retirement Benefit Curtailment
Restructuring Cost and Reserve [Line Items]
Established	(449)
Utilized	449
2010 Rationalization plans | Plant Exit Costs
Restructuring Cost and Reserve [Line Items]
Established	1,267	542
Utilized	(1,267)	(542)
2010 Rationalization plans | Non-Cash Asset Write-Down
Restructuring Cost and Reserve [Line Items]
Established	613	8,256
Utilized	$ (613)	$ (8,256)