Reconciliation Of Changes In Benefit Obligations And Fair Value Of Plan Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CHANGE IN PLAN ASSETS
Fair value of plan assets at December 31	$ 101,916	$ 104,291
Other noncurrent liabilities	(90,584)	(67,777)
U.S. Plans
CHANGE IN BENEFIT OBLIGATION
Obligation at January 1	92,839	111,188
Service cost	1,162	1,526	1,756
Interest cost	4,037	3,766	4,247
Plan amendments	0	0
Benefits paid	(6,230)	(2,479)
Actuarial loss (gain)	10,540	(11,885)
Currency translation	0	0
Curtailments/settlements	(36)	(9,277)
Acquisition	0	0
Obligation at December 31	102,312	92,839	111,188
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	81,957	74,578
Actual return on plan assets	2,385	14,303
Employer contributions	1,611	4,832
Benefits paid	(6,230)	(2,479)
Currency translation	0	0
Settlements	(36)	(9,277)
Other	0	0
Fair value of plan assets at December 31	79,687	81,957	74,578
Funded status at December 31	(22,625)	(10,882)
Current liabilities	(522)	(656)
Other noncurrent liabilities	(22,103)	(10,226)
Net liability at December 31	(22,625)	(10,882)
Non-U.S. Plans
CHANGE IN BENEFIT OBLIGATION
Obligation at January 1	60,471	56,555
Service cost	1,331	1,388	1,300
Interest cost	2,345	2,146	2,206
Plan amendments	(150)	0
Benefits paid	(2,955)	(1,957)
Actuarial loss (gain)	15,092	581
Currency translation	(6,646)	1,758
Curtailments/settlements	0	0
Acquisition	0	0
Obligation at December 31	69,488	60,471	56,555
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	22,334	19,660
Actual return on plan assets	1,738	2,341
Employer contributions	2,424	1,840
Benefits paid	(2,955)	(1,957)
Currency translation	(1,389)	447
Settlements	0	3
Other	0	0
Fair value of plan assets at December 31	22,152	22,334	19,660
Funded status at December 31	(47,336)	(38,138)
Current liabilities	(805)	(995)
Other noncurrent liabilities	(46,531)	(37,143)
Net liability at December 31	(47,336)	(38,138)
Other Postretirement Benefit Plans
CHANGE IN BENEFIT OBLIGATION
Obligation at January 1	21,354	25,587
Service cost	714	968	763
Interest cost	932	906	922
Plan amendments	0	0
Benefits paid	(691)	(801)
Actuarial loss (gain)	728	(5,139)
Currency translation	(182)	(167)
Curtailments/settlements	0	0
Acquisition	0	0
Obligation at December 31	22,855	21,354	25,587
CHANGE IN PLAN ASSETS
Fair value of plan assets at January 1	0	0
Actual return on plan assets	0	0
Employer contributions	691	801
Benefits paid	(691)	(801)
Currency translation	0	0
Settlements	0	0
Other	0	0
Fair value of plan assets at December 31	0	0	0
Funded status at December 31	(22,855)	(21,354)
Current liabilities	(905)	(946)
Other noncurrent liabilities	(21,950)	(20,408)
Net liability at December 31	$ (22,855)	$ (21,354)