Employee Benefits - Amounts Expected to be Recognized in Net Periodic Cost (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss recognition	$ 20,627
Prior service cost (credit) recognition	183
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss recognition	15,088
Prior service cost (credit) recognition	(840)
Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss recognition	1,184
Prior service cost (credit) recognition	$ (4,029)