Defined Contribution Plan, Pension and Other Post-Retirement Benefit Plans - Components of Net Periodic Benefit Cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Non cash settlement charge	$ 2,500
Other Postretirement Benefit Plans | U.S. Pension and Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	$ 0	$ 116
Interest cost	1,483	1,664	1,810
Expected return on plan assets	(2,393)	(3,151)	(2,684)
Amortization of prior service cost	2,528	6	6
Recognized actuarial loss	308	263	21
Net periodic cost (benefit)	1,926	(1,218)	(731)
Pension Plans | Non-U.S. Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0
Interest cost	1,112	1,030	1,138
Expected return on plan assets	(1,117)	(1,210)	(1,196)
Amortization of prior service cost	47	0	0
Recognized actuarial loss	531	496	312
Net periodic cost (benefit)	$ 573	$ 316	$ 254