Defined Contribution Plan, Pension and Other Post-Retirement Benefit Plans - Change in Benefit Obligation Plan Assets and Funded Status (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Change in plan assets:
Fair value of plan assets — Beginning of the year	$ 73,386
Fair value of plan assets at end of the year	74,366	$ 73,386
Other Postretirement Benefit Plans | U.S. Pension and Other Post-Retirement Benefit Plans
Change in benefit obligation:
Benefit obligation — Beginning of the year	45,238	50,072
Service cost	0	0
Interest cost	1,483	1,664	$ 1,810
Participant contributions	6	9
Benefits paid	(10,346)	(2,360)
Actuarial (gain) loss	3,196	(4,147)
Exchange rate changes	0	0
Benefit obligation at end of the year	39,577	45,238	50,072
Change in plan assets:
Fair value of plan assets — Beginning of the year	42,962	45,046
Actual return on plan assets	6,588	(2,259)
Employer contributions	835	2,526
Participant contributions	6	9
Benefits paid	(10,346)	(2,360)
Exchange rate changes	0	0
Fair value of plan assets at end of the year	40,045	42,962	45,046
Funded status	468	(2,276)
Pension Plans | Non-U.S. Pension Plan
Change in benefit obligation:
Benefit obligation — Beginning of the year	40,265	45,737
Service cost	0	788
Interest cost	1,112	1,030	1,138
Participant contributions	0	0
Benefits paid	(1,681)	(1,816)
Actuarial (gain) loss	3,730	(2,772)
Exchange rate changes	1,415	(2,702)
Benefit obligation at end of the year	44,841	40,265	45,737
Change in plan assets:
Fair value of plan assets — Beginning of the year	30,424	35,377
Actual return on plan assets	3,610	(1,808)
Employer contributions	887	763
Participant contributions	0	0
Benefits paid	(1,681)	(1,816)
Exchange rate changes	1,081	(2,092)
Fair value of plan assets at end of the year	34,321	30,424	$ 35,377
Funded status	$ (10,520)	$ (9,841)