Pension and Other Postretirement Benefits - Schedule of Changes in Projected Benefit Obligations (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
U.S. Pension Benefits [Member]
Change in projected benefit obligations:
Projected benefit obligations, Beginning balance	$ 197,057	$ 174,814
Service cost	4,424	3,943	3,115
Interest cost	8,070	8,514	8,867
Plan amendments	681	(42)
Foreign currency exchange rate changes	0	0
Actuarial (gain) loss	(20,806)	17,289
Participant contributions	0	0
Benefits paid from plan assets	(7,812)	(7,425)
Benefits paid by the Corporation	(8)	(36)
Projected benefit obligations, Ending balance	181,606	197,057	174,814
Foreign Pension Benefits [Member]
Change in projected benefit obligations:
Projected benefit obligations, Beginning balance	59,210	50,698
Service cost	0	0	0
Interest cost	2,551	2,506	2,589
Plan amendments	0	0
Foreign currency exchange rate changes	1,154	2,434
Actuarial (gain) loss	(823)	5,239
Participant contributions	0	0
Benefits paid from plan assets	(1,262)	(1,667)
Benefits paid by the Corporation	0	0
Projected benefit obligations, Ending balance	60,830	59,210	50,698
Other Postretirement Benefits [Member]
Change in projected benefit obligations:
Projected benefit obligations, Beginning balance	22,806	22,348
Service cost	943	804	643
Interest cost	926	919	1,020
Plan amendments	0	0
Foreign currency exchange rate changes	0	0
Actuarial (gain) loss	(3,949)	(623)
Participant contributions	423	428
Benefits paid from plan assets	0	0
Benefits paid by the Corporation	(1,020)	(1,070)
Projected benefit obligations, Ending balance	$ 20,129	$ 22,806	$ 22,348