Reconciliation Of Changes In Benefit Obligations And Fair Value Of Plan Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	$ 101,916
Fair value of plan assets at December 31	98,242	$ 101,916
Other noncurrent liabilities	(76,190)	(90,584)
U.S. Plans
CHANGE IN BENEFIT OBLIGATION
Obligation at January 1	102,312	92,839
Service cost	1,279	1,162	$ 1,526
Interest cost	3,770	4,037	3,766
Plan amendments	113	0
Benefits paid	(3,985)	(6,230)
Actuarial loss (gain)	(5,013)	10,540
Currency translation	0	0
Curtailments/settlements	0	(36)
Obligation at December 31	98,476	102,312	92,839
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	79,687	81,957
Actual return on plan assets	(2,587)	2,385
Employer contributions	4,460	1,611
Benefits paid	(3,985)	(6,230)
Currency translation	0	0
Settlements	0	(36)
Fair value of plan assets at December 31	77,575	79,687	81,957
Funded status at December 31	(20,901)	(22,625)
Current liabilities	(743)	(522)
Other noncurrent liabilities	(20,158)	(22,103)
Net liability at December 31	(20,901)	(22,625)
Non-U.S. Plans
CHANGE IN BENEFIT OBLIGATION
Obligation at January 1	69,488	60,471
Service cost	1,506	1,331	1,388
Interest cost	1,734	2,345	2,146
Plan amendments	0	(150)
Benefits paid	(2,448)	(2,955)
Actuarial loss (gain)	(6,909)	15,092
Currency translation	(5,308)	(6,646)
Curtailments/settlements	0	0
Obligation at December 31	58,063	69,488	60,471
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	22,152	22,334
Actual return on plan assets	205	1,738
Employer contributions	1,837	2,424
Benefits paid	(2,448)	(2,955)
Currency translation	(1,101)	(1,389)
Settlements	0	0
Fair value of plan assets at December 31	20,645	22,152	22,334
Funded status at December 31	(37,418)	(47,336)
Current liabilities	(875)	(805)
Other noncurrent liabilities	(36,543)	(46,531)
Net liability at December 31	(37,418)	(47,336)
Other Postretirement Benefit Plans
CHANGE IN BENEFIT OBLIGATION
Obligation at January 1	22,855	21,354
Service cost	673	714	968
Interest cost	833	932	906
Plan amendments	0	0
Benefits paid	(622)	(691)
Actuarial loss (gain)	(2,966)	728
Currency translation	(373)	(182)
Curtailments/settlements	0	0
Obligation at December 31	20,400	22,855	21,354
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	0	0
Actual return on plan assets	0	0
Employer contributions	622	691
Benefits paid	(622)	(691)
Currency translation	0	0
Settlements	0	0
Fair value of plan assets at December 31	0	0	$ 0
Funded status at December 31	(20,400)	(22,855)
Current liabilities	(911)	(905)
Other noncurrent liabilities	(19,489)	(21,950)
Net liability at December 31	$ (20,400)	$ (22,855)