Activity in Rationalization Reserves (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended								6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012 Prior Years' Rationalization plans	Jun. 30, 2012 2012 Rationalization Plans	Jun. 30, 2012 Employee Severance and Benefits	Jun. 30, 2012 Employee Severance and Benefits Prior Years' Rationalization plans	Jun. 30, 2012 Employee Severance and Benefits 2012 Rationalization Plans	Jun. 30, 2012 Plant Exit Costs	Dec. 31, 2011 Plant Exit Costs	Jun. 30, 2012 Plant Exit Costs Prior Years' Rationalization plans	Jun. 30, 2012 Plant Exit Costs 2012 Rationalization Plans	Jun. 30, 2012 Non-Cash Asset Write-Down Prior Years' Rationalization plans	Jun. 30, 2012 Non-Cash Asset Write-Down 2012 Rationalization Plans
Restructuring Cost and Reserve [Line Items]
Balance at December 31	$ 4,596			$ 4,385			$ 211	$ 211
Rationalization Plan Reserves Established		240	3,521		460	2,257			(249)	752	29	512
Rationalization Plan Reserves Utilized		(2,144)	(1,844)		(2,364)	(580)			249	(752)	(29)	(512)
Currency translation	(97)			(97)
Total activity	(324)			(324)
Balance at June 30, 2012	$ 4,272			$ 4,061			$ 211	$ 211