Post Retirement Benefit Plans (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
U.S. Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 106	$ 95	$ 212	$ 191
Interest cost	491	542	982	1,084
Expected return on plan assets	(740)	(775)	(1,480)	(1,550)
Net amortization/deferrals	839	807	1,678	1,613
Net periodic benefit cost	696	669	1,392	1,338
Discount rate	3.90%	4.30%	3.90%	4.30%
Expected long-term rate of return	7.50%	7.50%	7.50%	7.50%
Rate of compensation increase	3.00%	3.00%	3.00%	3.00%
International Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	506	491	1,019	986
Interest cost	1,656	1,764	3,333	3,536
Expected return on plan assets	(2,095)	(2,021)	(4,217)	(4,050)
Net amortization/deferrals	855	674	1,721	1,351
Settlement loss recognized				293
Net periodic benefit cost	922	908	1,856	2,116
Discount rate	4.30%	4.96%	4.30%	4.96%
Expected long-term rate of return	6.09%	6.12%	6.09%	6.12%
Rate of compensation increase	3.10%	3.21%	3.10%	3.21%
U.S. Post Retirement
Defined Benefit Plan Disclosure [Line Items]
Service cost	7	10	14	19
Interest cost	321	350	642	701
Net amortization/deferrals	(212)	(200)	(424)	(401)
Net periodic benefit cost	116	160	232	319
Discount rate	3.90%	4.30%	3.90%	4.30%
International Post Retirement
Defined Benefit Plan Disclosure [Line Items]
Service cost	12	11	24	22
Interest cost	43	50	87	100
Net amortization/deferrals	(76)	(82)	(153)	(164)
Net periodic benefit cost	$ (21)	$ (21)	$ (42)	$ (42)
Discount rate	4.30%	5.15%	4.30%	5.15%