Pretax Amounts Recognized in Accumulated Other Comprehensive Income Loss (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Prior service cost (credit)	$ 135	$ 86
Net loss	33,461	34,337
Total	33,596	34,423
Net gain (loss) in current year	(2,483)
Prior service cost	(113)
Amortization of prior service cost (credit)	64
Amortization of net loss	3,359
Exchange rate effect on amounts in OCI	0
Total	827
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Prior service cost (credit)	(38)	(40)
Net loss	15,330	25,275
Total	15,292	25,235
Net gain (loss) in current year	6,000
Prior service cost	0
Amortization of prior service cost (credit)	(15)
Amortization of net loss	1,946
Exchange rate effect on amounts in OCI	2,012
Total	9,943
Other Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Prior service cost (credit)	(1,215)	(1,580)
Net loss	(2,197)	655
Total	(3,412)	$ (925)
Net gain (loss) in current year	2,967
Prior service cost	0
Amortization of prior service cost (credit)	(365)
Amortization of net loss	(48)
Exchange rate effect on amounts in OCI	(67)
Total	$ 2,487