Components of Net Periodic Benefit Cost for Defined Benefit Plans and Other Postretirement Plans (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 1,526	$ 1,756	$ 1,759
Interest cost	3,766	4,247	4,506
Expected return on plan assets	(5,318)	(4,687)	(4,755)
Net amortization	7,621	5,376	4,855
Net periodic benefit cost	7,595	6,692	6,365
Non-U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	1,388	1,300	1,078
Interest cost	2,146	2,206	2,320
Expected return on plan assets	(1,055)	(1,035)	(1,117)
Net amortization	955	589	442
Net periodic benefit cost	3,434	3,060	2,723
Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	968	763	691
Interest cost	906	922	1,035
Net amortization	24	11	(156)
Net periodic benefit cost	$ 1,898	$ 1,696	$ 1,570