Change in Benefit Obligation Plan Assets and Funded Status (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Change in plan assets:
Ending balance	$ 69,032	$ 61,334
U.S. Pension Plans
Change in benefit obligation:
Benefit obligation - Beginning of year	47,096	44,003
Service cost	108	112	73
Interest cost	1,704	1,802	1,956
Benefits paid	(1,875)	(1,716)
Actuarial loss (gain)	(5,004)	2,895
Benefit obligation at end of year	42,029	47,096	44,003
Change in plan assets:
Beginning balance	29,395	25,823
Actual return on plan assets	3,935	3,565
Employer contributions	2,087	1,723
Benefits paid	(1,875)	(1,716)
Ending balance	33,542	29,395	25,823
Funded status	(8,487)	(17,701)
Non-U.S. Pension Plans
Change in benefit obligation:
Benefit obligation - Beginning of year	41,768	37,060
Interest cost	1,761	1,863	2,127
Benefits paid	(1,601)	(1,453)
Actuarial loss (gain)	493	2,605
Exchange rate changes	850	1,693
Benefit obligation at end of year	43,271	41,768	37,060
Change in plan assets:
Beginning balance	31,939	28,241
Actual return on plan assets	3,128	2,935
Employer contributions	928	926
Benefits paid	(1,601)	(1,453)
Exchange rate changes	650	1,290
Ending balance	35,044	31,939	28,241
Funded status	(8,227)	(9,829)
Other Post-Retirement Benefit Plans
Change in benefit obligation:
Benefit obligation - Beginning of year	918	1,302
Interest cost	29	48	65
Participant contributions	19	38
Benefits paid	(107)	(112)
Actuarial loss (gain)	(173)	(358)
Benefit obligation at end of year	686	918	1,302
Change in plan assets:
Employer contributions	88	75
Participant contributions	19	38
Benefits paid	(107)	(112)
Exchange rate changes		(1)
Funded status	$ (686)	$ (918)